Articles | Volume 19, issue 11
https://doi.org/10.5194/acp-19-7691-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-19-7691-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Jun 2019
Research article |
| 07 Jun 2019
| 07 Jun 2019
Estimation of rate coefficients and branching ratios for reactions of organic peroxy radicals for use in automated mechanism construction
Michael E. Jenkin
CORRESPONDING AUTHOR
Atmospheric Chemistry Services, Okehampton, Devon, EX20 4QB, UK
School of Chemistry, University of Bristol, Cantock's Close, Bristol,
BS8 1TS, UK
Richard Valorso
LISA, UMR CNRS 7583, Université Paris-Est Créteil,
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Bernard Aumont
LISA, UMR CNRS 7583, Université Paris-Est Créteil,
Université de Paris, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Andrew R. Rickard
Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry,
University of York, York, YO10 5DD, UK
National Centre for Atmospheric Science, University of York, York,
YO10 5DD, UK
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Caterina Mapelli, James K. Donnelly, Úna E. Hogan, Andrew R. Rickard, Abbie T. Robinson, Fergal Byrne, Con Rob McElroy, Basile F. E. Curchod, Daniel Hollas, and Terry J. Dillon
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Daniel J. Bryant, Beth S. Nelson, Stefan J. Swift, Sri Hapsari Budisulistiorini, Will S. Drysdale, Adam R. Vaughan, Mike J. Newland, James R. Hopkins, James M. Cash, Ben Langford, Eiko Nemitz, W. Joe F. Acton, C. Nicholas Hewitt, Tuhin Mandal, Bhola R. Gurjar, Shivani, Ranu Gadi, James D. Lee, Andrew R. Rickard, and Jacqueline F. Hamilton
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Etienne Terrenoire, Didier A. Hauglustaine, Yann Cohen, Anne Cozic, Richard Valorso, Franck Lefèvre, and Sigrun Matthes
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Emily B. Franklin, Lindsay D. Yee, Bernard Aumont, Robert J. Weber, Paul Grigas, and Allen H. Goldstein
Atmos. Meas. Tech., 15, 3779–3803, https://doi.org/10.5194/amt-15-3779-2022, https://doi.org/10.5194/amt-15-3779-2022, 2022
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Mike J. Newland, Camille Mouchel-Vallon, Richard Valorso, Bernard Aumont, Luc Vereecken, Michael E. Jenkin, and Andrew R. Rickard
Atmos. Chem. Phys., 22, 6167–6195, https://doi.org/10.5194/acp-22-6167-2022, https://doi.org/10.5194/acp-22-6167-2022, 2022
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Zhe Peng, Julia Lee-Taylor, Harald Stark, John J. Orlando, Bernard Aumont, and Jose L. Jimenez
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Beth S. Nelson, Gareth J. Stewart, Will S. Drysdale, Mike J. Newland, Adam R. Vaughan, Rachel E. Dunmore, Pete M. Edwards, Alastair C. Lewis, Jacqueline F. Hamilton, W. Joe Acton, C. Nicholas Hewitt, Leigh R. Crilley, Mohammed S. Alam, Ülkü A. Şahin, David C. S. Beddows, William J. Bloss, Eloise Slater, Lisa K. Whalley, Dwayne E. Heard, James M. Cash, Ben Langford, Eiko Nemitz, Roberto Sommariva, Sam Cox, Shivani, Ranu Gadi, Bhola R. Gurjar, James R. Hopkins, Andrew R. Rickard, and James D. Lee
Atmos. Chem. Phys., 21, 13609–13630, https://doi.org/10.5194/acp-21-13609-2021, https://doi.org/10.5194/acp-21-13609-2021, 2021
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Ozone production at an urban site in Delhi is sensitive to volatile organic compound (VOC) concentrations, particularly those of the aromatic, monoterpene, and alkene VOC classes. The change in ozone production by varying atmospheric pollutants according to their sources, as defined in an emissions inventory, is investigated. The study suggests that reducing road transport emissions alone does not reduce reactive VOCs in the atmosphere enough to perturb an increase in ozone production.
R. Anthony Cox, Markus Ammann, John N. Crowley, Paul T. Griffiths, Hartmut Herrmann, Erik H. Hoffmann, Michael E. Jenkin, V. Faye McNeill, Abdelwahid Mellouki, Christopher J. Penkett, Andreas Tilgner, and Timothy J. Wallington
Atmos. Chem. Phys., 21, 13011–13018, https://doi.org/10.5194/acp-21-13011-2021, https://doi.org/10.5194/acp-21-13011-2021, 2021
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The term open-air factor was coined in the 1960s, establishing that rural air had powerful germicidal properties possibly resulting from immediate products of the reaction of ozone with alkenes, unsaturated compounds ubiquitously present in natural and polluted environments. We have re-evaluated those early experiments, applying the recently substantially improved knowledge, and put them into the context of the lifetime of aerosol-borne pathogens that are so important in the Covid-19 pandemic.
James Weber, Scott Archer-Nicholls, Nathan Luke Abraham, Youngsub M. Shin, Thomas J. Bannan, Carl J. Percival, Asan Bacak, Paulo Artaxo, Michael Jenkin, M. Anwar H. Khan, Dudley E. Shallcross, Rebecca H. Schwantes, Jonathan Williams, and Alex T. Archibald
Geosci. Model Dev., 14, 5239–5268, https://doi.org/10.5194/gmd-14-5239-2021, https://doi.org/10.5194/gmd-14-5239-2021, 2021
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The new mechanism CRI-Strat 2 features state-of-the-art isoprene chemistry not previously available in UKCA and improves UKCA's ability to reproduce observed concentrations of isoprene, monoterpenes, and OH in tropical regions. The enhanced ability to model isoprene, the most widely emitted non-methane volatile organic compound (VOC), will allow understanding of how isoprene and other biogenic VOCs affect atmospheric composition and, through biosphere–atmosphere feedbacks, climate change.
Isaac Kwadjo Afreh, Bernard Aumont, Marie Camredon, and Kelley Claire Barsanti
Atmos. Chem. Phys., 21, 11467–11487, https://doi.org/10.5194/acp-21-11467-2021, https://doi.org/10.5194/acp-21-11467-2021, 2021
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This is the first mechanistic modeling study of secondary organic aerosol (SOA) from the understudied monoterpene, camphene. The semi-explicit chemical model GECKO-A predicted camphene SOA yields that were ~2 times α-pinene. Using 50/50 α-pinene + limonene as a surrogate for camphene increased predicted SOA mass from biomass burning fuels by up to ~100 %. The accurate representation of camphene in air quality models can improve predictions of SOA when camphene is a dominant monoterpene.
Tommaso Galeazzo, Richard Valorso, Ying Li, Marie Camredon, Bernard Aumont, and Manabu Shiraiwa
Atmos. Chem. Phys., 21, 10199–10213, https://doi.org/10.5194/acp-21-10199-2021, https://doi.org/10.5194/acp-21-10199-2021, 2021
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We simulate SOA viscosity with explicit modeling of gas-phase oxidation of isoprene and α-pinene. While the viscosity dependence on relative humidity and mass loadings is captured well by simulations, the model underestimates measured viscosity, indicating missing processes. Kinetic limitations and reduction in mass accommodation may cause an increase in viscosity. The developed model is powerful for investigation of the interplay among gas reactions, chemical composition and phase state.
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Abdelwahid Mellouki, Markus Ammann, R. Anthony Cox, John N. Crowley, Hartmut Herrmann, Michael E. Jenkin, V. Faye McNeill, Jürgen Troe, and Timothy J. Wallington
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Volatile organic compounds play an important role in atmospheric chemistry. This article, the eighth in the series, presents kinetic and photochemical data sheets evaluated by the IUPAC Task Group on Atmospheric Chemical Kinetic Data Evaluation. It covers the gas-phase reactions of organic species with four, or more, carbon atoms (≥ C4) including thermal reactions of closed-shell organic species with HO and NO3 radicals and their photolysis. These data are important for atmospheric models.
Gareth J. Stewart, Beth S. Nelson, W. Joe F. Acton, Adam R. Vaughan, Naomi J. Farren, James R. Hopkins, Martyn W. Ward, Stefan J. Swift, Rahul Arya, Arnab Mondal, Ritu Jangirh, Sakshi Ahlawat, Lokesh Yadav, Sudhir K. Sharma, Siti S. M. Yunus, C. Nicholas Hewitt, Eiko Nemitz, Neil Mullinger, Ranu Gadi, Lokesh K. Sahu, Nidhi Tripathi, Andrew R. Rickard, James D. Lee, Tuhin K. Mandal, and Jacqueline F. Hamilton
Atmos. Chem. Phys., 21, 2407–2426, https://doi.org/10.5194/acp-21-2407-2021, https://doi.org/10.5194/acp-21-2407-2021, 2021
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Biomass burning releases many lower-molecular-weight organic species which are difficult to analyse but important for the formation of organic aerosol. This study examined a new high-resolution technique to better characterise these difficult-to-analyse organic components. Some burning sources analysed in this study, such as cow dung cake and municipal solid waste, released extremely complex mixtures containing many thousands of different lower-volatility organic compounds.
Gareth J. Stewart, W. Joe F. Acton, Beth S. Nelson, Adam R. Vaughan, James R. Hopkins, Rahul Arya, Arnab Mondal, Ritu Jangirh, Sakshi Ahlawat, Lokesh Yadav, Sudhir K. Sharma, Rachel E. Dunmore, Siti S. M. Yunus, C. Nicholas Hewitt, Eiko Nemitz, Neil Mullinger, Ranu Gadi, Lokesh K. Sahu, Nidhi Tripathi, Andrew R. Rickard, James D. Lee, Tuhin K. Mandal, and Jacqueline F. Hamilton
Atmos. Chem. Phys., 21, 2383–2406, https://doi.org/10.5194/acp-21-2383-2021, https://doi.org/10.5194/acp-21-2383-2021, 2021
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Biomass burning is a major source of trace gases to the troposphere; however, the composition and quantity of emissions vary greatly between different fuel types. This work provided near-total quantitation of non-methane volatile organic compounds from combustion of biofuels from India. Emissions from cow dung cake combustion were significantly larger than conventional fuelwood combustion, potentially indicating that this source has a disproportionately large impact on regional air quality.
Mike J. Newland, Daniel J. Bryant, Rachel E. Dunmore, Thomas J. Bannan, W. Joe F. Acton, Ben Langford, James R. Hopkins, Freya A. Squires, William Dixon, William S. Drysdale, Peter D. Ivatt, Mathew J. Evans, Peter M. Edwards, Lisa K. Whalley, Dwayne E. Heard, Eloise J. Slater, Robert Woodward-Massey, Chunxiang Ye, Archit Mehra, Stephen D. Worrall, Asan Bacak, Hugh Coe, Carl J. Percival, C. Nicholas Hewitt, James D. Lee, Tianqu Cui, Jason D. Surratt, Xinming Wang, Alastair C. Lewis, Andrew R. Rickard, and Jacqueline F. Hamilton
Atmos. Chem. Phys., 21, 1613–1625, https://doi.org/10.5194/acp-21-1613-2021, https://doi.org/10.5194/acp-21-1613-2021, 2021
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We report the formation of secondary pollutants in the urban megacity of Beijing that are typically associated with remote regions such as rainforests. This is caused by extremely low levels of nitric oxide (NO), typically expected to be high in urban areas, observed in the afternoon. This work has significant implications for how we understand atmospheric chemistry in the urban environment and thus for how to implement effective policies to improve urban air quality.
R. Anthony Cox, Markus Ammann, John N. Crowley, Hartmut Herrmann, Michael E. Jenkin, V. Faye McNeill, Abdelwahid Mellouki, Jürgen Troe, and Timothy J. Wallington
Atmos. Chem. Phys., 20, 13497–13519, https://doi.org/10.5194/acp-20-13497-2020, https://doi.org/10.5194/acp-20-13497-2020, 2020
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Criegee intermediates, formed from alkene–ozone reactions, play a potentially important role as tropospheric oxidants. Evaluated kinetic data are provided for reactions governing their formation and removal for use in atmospheric models. These include their formation from reactions of simple and complex alkenes and removal by decomposition and reaction with a number of atmospheric species (e.g. H2O, SO2). An overview of the tropospheric chemistry of Criegee intermediates is also provided.
Michael E. Jenkin, Richard Valorso, Bernard Aumont, Mike J. Newland, and Andrew R. Rickard
Atmos. Chem. Phys., 20, 12921–12937, https://doi.org/10.5194/acp-20-12921-2020, https://doi.org/10.5194/acp-20-12921-2020, 2020
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Unsaturated organic compounds are emitted in large quantities from natural and human-influenced sources. Atmospheric removal occurs significantly by reaction with ozone, initiating reaction sequences forming free radicals and organic pollutants in the gaseous and particulate phases. Due to their very large number, it is impossible to study the reaction rate for every compound, and most have to be estimated. Updated and extended estimation methods are reported for use in atmospheric models.
James Weber, Scott Archer-Nicholls, Paul Griffiths, Torsten Berndt, Michael Jenkin, Hamish Gordon, Christoph Knote, and Alexander T. Archibald
Atmos. Chem. Phys., 20, 10889–10910, https://doi.org/10.5194/acp-20-10889-2020, https://doi.org/10.5194/acp-20-10889-2020, 2020
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Highly oxygenated organic molecules (HOMs) are important for aerosol growth and new particle formation, particularly in air masses with less sulphuric acid. This new chemical mechanism reproduces measured [HOM] and [HOM precursors] and is concise enough for use in global climate models. The mechanism also reproduces the observed suppression of HOMs by isoprene, suggesting enhanced emissions may not necessarily lead to more aerosols. Greater HOM importance in the pre-industrial era is also shown.
Archit Mehra, Yuwei Wang, Jordan E. Krechmer, Andrew Lambe, Francesca Majluf, Melissa A. Morris, Michael Priestley, Thomas J. Bannan, Daniel J. Bryant, Kelly L. Pereira, Jacqueline F. Hamilton, Andrew R. Rickard, Mike J. Newland, Harald Stark, Philip Croteau, John T. Jayne, Douglas R. Worsnop, Manjula R. Canagaratna, Lin Wang, and Hugh Coe
Atmos. Chem. Phys., 20, 9783–9803, https://doi.org/10.5194/acp-20-9783-2020, https://doi.org/10.5194/acp-20-9783-2020, 2020
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Aromatic volatile organic compounds (VOCs) emitted from anthropogenic activity are important for tropospheric ozone and secondary organic aerosol (SOA) formation. Here we present a detailed chemical characterisation of SOA from four C9-aromatic isomers and a polycyclic aromatic hydrocarbon (PAH). We identify and compare their oxidation products in the gas and particle phases, showing the different relative importance of oxidation pathways and proportions of highly oxygenated organic molecules.
Jacob T. Shaw, Andrew R. Rickard, Mike J. Newland, and Terry J. Dillon
Atmos. Chem. Phys., 20, 9725–9736, https://doi.org/10.5194/acp-20-9725-2020, https://doi.org/10.5194/acp-20-9725-2020, 2020
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This work expands upon the recently developed multivariate relative rate technique, presented in Shaw et al. (2019), for the measurement of rates of reaction between aromatic and aliphatic volatile organic compounds (VOCs) and OH. Knowledge of the rates of such reactions are important for understanding air quality in urban environments. This work also provides a key validation of structure–activity relationship models, which provide a theoretical method for estimating OH + VOC kinetics.
Daniel J. Bryant, William J. Dixon, James R. Hopkins, Rachel E. Dunmore, Kelly L. Pereira, Marvin Shaw, Freya A. Squires, Thomas J. Bannan, Archit Mehra, Stephen D. Worrall, Asan Bacak, Hugh Coe, Carl J. Percival, Lisa K. Whalley, Dwayne E. Heard, Eloise J. Slater, Bin Ouyang, Tianqu Cui, Jason D. Surratt, Di Liu, Zongbo Shi, Roy Harrison, Yele Sun, Weiqi Xu, Alastair C. Lewis, James D. Lee, Andrew R. Rickard, and Jacqueline F. Hamilton
Atmos. Chem. Phys., 20, 7531–7552, https://doi.org/10.5194/acp-20-7531-2020, https://doi.org/10.5194/acp-20-7531-2020, 2020
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Using the chemical composition of offline filter samples, we report that a large share of oxidized organic aerosol in Beijing during summer is due to isoprene secondary organic aerosol (iSOA). iSOA organosulfates showed a strong correlation with the product of ozone and particulate sulfate. This highlights the role of both photochemistry and the availability of particulate sulfate in heterogeneous reactions and further demonstrates that iSOA formation is controlled by anthropogenic emissions.
Camille Mouchel-Vallon, Julia Lee-Taylor, Alma Hodzic, Paulo Artaxo, Bernard Aumont, Marie Camredon, David Gurarie, Jose-Luis Jimenez, Donald H. Lenschow, Scot T. Martin, Janaina Nascimento, John J. Orlando, Brett B. Palm, John E. Shilling, Manish Shrivastava, and Sasha Madronich
Atmos. Chem. Phys., 20, 5995–6014, https://doi.org/10.5194/acp-20-5995-2020, https://doi.org/10.5194/acp-20-5995-2020, 2020
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The GoAmazon 2014/5 field campaign took place near the city of Manaus, Brazil, isolated in the Amazon rainforest, to study the impacts of urban pollution on natural air masses. We simulated this campaign with an extremely detailed organic chemistry model to understand how the city would affect the growth and composition of natural aerosol particles. Discrepancies between the model and the measurements indicate that the chemistry of naturally emitted organic compounds is still poorly understood.
Victor Lannuque, Florian Couvidat, Marie Camredon, Bernard Aumont, and Bertrand Bessagnet
Atmos. Chem. Phys., 20, 4905–4931, https://doi.org/10.5194/acp-20-4905-2020, https://doi.org/10.5194/acp-20-4905-2020, 2020
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Large uncertainties remain in modeling secondary organic aerosol (SOA) and evolution and properties in air quality models. In this article, the recently developed VBS-GECKO parameterization for SOA formation has been implemented in the air quality model CHIMERE. Simulations have been driven to identify the main SOA sources and to evaluate the sensitivity of simulated SOA concentrations to (i) secondary organic compound properties and (ii) emissions from traffic and transportation sources.
Roberto Sommariva, Sam Cox, Chris Martin, Kasia Borońska, Jenny Young, Peter K. Jimack, Michael J. Pilling, Vasileios N. Matthaios, Beth S. Nelson, Mike J. Newland, Marios Panagi, William J. Bloss, Paul S. Monks, and Andrew R. Rickard
Geosci. Model Dev., 13, 169–183, https://doi.org/10.5194/gmd-13-169-2020, https://doi.org/10.5194/gmd-13-169-2020, 2020
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This paper presents the AtChem software, which can be used to build box models for atmospheric chemistry studies. The software is designed to facilitate the use of one of the most important chemical mechanisms used by atmospheric scientists, the Master Chemical Mechanism. AtChem exists in two versions: an on-line application for laboratory studies and educational or outreach activities and an offline version for more complex models and batch simulations. AtChem is open source under MIT License.
Peter Bräuer, Camille Mouchel-Vallon, Andreas Tilgner, Anke Mutzel, Olaf Böge, Maria Rodigast, Laurent Poulain, Dominik van Pinxteren, Ralf Wolke, Bernard Aumont, and Hartmut Herrmann
Atmos. Chem. Phys., 19, 9209–9239, https://doi.org/10.5194/acp-19-9209-2019, https://doi.org/10.5194/acp-19-9209-2019, 2019
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The article presents a new protocol for computer-assisted automated aqueous-phase chemistry mechanism generation, which has been validated against chamber experiments. Together with a large kinetics database and improved prediction methods for kinetic data, the novel protocol provides an unmatched tool for detailed studies of tropospheric aqueous-phase chemistry in complex model studies and for the design and analysis of chamber experiments.
Zongbo Shi, Tuan Vu, Simone Kotthaus, Roy M. Harrison, Sue Grimmond, Siyao Yue, Tong Zhu, James Lee, Yiqun Han, Matthias Demuzere, Rachel E. Dunmore, Lujie Ren, Di Liu, Yuanlin Wang, Oliver Wild, James Allan, W. Joe Acton, Janet Barlow, Benjamin Barratt, David Beddows, William J. Bloss, Giulia Calzolai, David Carruthers, David C. Carslaw, Queenie Chan, Lia Chatzidiakou, Yang Chen, Leigh Crilley, Hugh Coe, Tie Dai, Ruth Doherty, Fengkui Duan, Pingqing Fu, Baozhu Ge, Maofa Ge, Daobo Guan, Jacqueline F. Hamilton, Kebin He, Mathew Heal, Dwayne Heard, C. Nicholas Hewitt, Michael Hollaway, Min Hu, Dongsheng Ji, Xujiang Jiang, Rod Jones, Markus Kalberer, Frank J. Kelly, Louisa Kramer, Ben Langford, Chun Lin, Alastair C. Lewis, Jie Li, Weijun Li, Huan Liu, Junfeng Liu, Miranda Loh, Keding Lu, Franco Lucarelli, Graham Mann, Gordon McFiggans, Mark R. Miller, Graham Mills, Paul Monk, Eiko Nemitz, Fionna O'Connor, Bin Ouyang, Paul I. Palmer, Carl Percival, Olalekan Popoola, Claire Reeves, Andrew R. Rickard, Longyi Shao, Guangyu Shi, Dominick Spracklen, David Stevenson, Yele Sun, Zhiwei Sun, Shu Tao, Shengrui Tong, Qingqing Wang, Wenhua Wang, Xinming Wang, Xuejun Wang, Zifang Wang, Lianfang Wei, Lisa Whalley, Xuefang Wu, Zhijun Wu, Pinhua Xie, Fumo Yang, Qiang Zhang, Yanli Zhang, Yuanhang Zhang, and Mei Zheng
Atmos. Chem. Phys., 19, 7519–7546, https://doi.org/10.5194/acp-19-7519-2019, https://doi.org/10.5194/acp-19-7519-2019, 2019
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APHH-Beijing is a collaborative international research programme to study the sources, processes and health effects of air pollution in Beijing. This introduction to the special issue provides an overview of (i) the APHH-Beijing programme, (ii) the measurement and modelling activities performed as part of it and (iii) the air quality and meteorological conditions during joint intensive field campaigns as a core activity within APHH-Beijing.
Victor Lannuque, Marie Camredon, Florian Couvidat, Alma Hodzic, Richard Valorso, Sasha Madronich, Bertrand Bessagnet, and Bernard Aumont
Atmos. Chem. Phys., 18, 13411–13428, https://doi.org/10.5194/acp-18-13411-2018, https://doi.org/10.5194/acp-18-13411-2018, 2018
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Large uncertainties remain in understanding the influence of atmospheric environmental conditions on secondary organic aerosol (SOA) formation, evolution and properties. In this article, the GECKO-A modelling tool has been used in a box model under various environmental conditions to (i) explore the sensitivity of SOA formation and properties to changes on physical and chemical conditions and (ii) develop a volatility-basis-set-type parameterization for air quality models.
Michael E. Jenkin, Richard Valorso, Bernard Aumont, Andrew R. Rickard, and Timothy J. Wallington
Atmos. Chem. Phys., 18, 9297–9328, https://doi.org/10.5194/acp-18-9297-2018, https://doi.org/10.5194/acp-18-9297-2018, 2018
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Organic compounds are emitted in large quantities from natural and human-influenced sources. Removal from the atmosphere occurs mainly by reaction with hydroxyl (OH) radicals, and initiates reaction sequences forming pollutants such as ozone and organic particles. Due to their very large number, it is impossible to measure the removal rate for all compounds, and most have to be estimated. An updated and extended estimation method is reported for use in atmospheric models and impact assessments.
Michael E. Jenkin, Richard Valorso, Bernard Aumont, Andrew R. Rickard, and Timothy J. Wallington
Atmos. Chem. Phys., 18, 9329–9349, https://doi.org/10.5194/acp-18-9329-2018, https://doi.org/10.5194/acp-18-9329-2018, 2018
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Organic compounds are emitted in large quantities from natural and human-influenced sources. Removal from the atmosphere occurs mainly by reaction with hydroxyl (OH) radicals, and initiates reaction sequences forming pollutants such as ozone and organic particles. Due to their very large number, it is impossible to measure the removal rate for all compounds, and most have to be estimated. An updated and extended estimation method is reported for use in atmospheric models and impact assessments.
Mike J. Newland, Andrew R. Rickard, Tomás Sherwen, Mathew J. Evans, Luc Vereecken, Amalia Muñoz, Milagros Ródenas, and William J. Bloss
Atmos. Chem. Phys., 18, 6095–6120, https://doi.org/10.5194/acp-18-6095-2018, https://doi.org/10.5194/acp-18-6095-2018, 2018
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Stabilised Criegee intermediates (SCIs) are formed in the reaction of alkenes with ozone, both of which are ubiquitous throughout the troposphere. We determine the fate and global distribution of SCI from monoterpene ozonolysis. One major fate of SCI is reaction with H2O, but for a fraction of SCIs, unimolecular reactions dominate. Concentrations of SCIs are high enough regionally to play a key role in the conversion of sulfur dioxide to aerosol, affecting air quality and climate.
Felix A. Mackenzie-Rae, Helen J. Wallis, Andrew R. Rickard, Kelly L. Pereira, Sandra M. Saunders, Xinming Wang, and Jacqueline F. Hamilton
Atmos. Chem. Phys., 18, 4673–4693, https://doi.org/10.5194/acp-18-4673-2018, https://doi.org/10.5194/acp-18-4673-2018, 2018
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Native to Australasia, the remarkable adaptability, rapid growth rates and high quality wood of eucalypt trees has led to them the most widely planted hardwood forest trees in the world. In contrast to boreal and tropical forests, there has been little study of aerosol formation in these regions. Here, we study the secondary organic aerosol formation from the very fast reaction of α-phellandrene, emitted from eucalypts, and identify key products and reaction pathways.
Jacob T. Shaw, Richard T. Lidster, Danny R. Cryer, Noelia Ramirez, Fiona C. Whiting, Graham A. Boustead, Lisa K. Whalley, Trevor Ingham, Andrew R. Rickard, Rachel E. Dunmore, Dwayne E. Heard, Ally C. Lewis, Lucy J. Carpenter, Jacqui F. Hamilton, and Terry J. Dillon
Atmos. Chem. Phys., 18, 4039–4054, https://doi.org/10.5194/acp-18-4039-2018, https://doi.org/10.5194/acp-18-4039-2018, 2018
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The lifetime of a chemical in the atmosphere is largely governed by the rate of its reaction with the hydroxyl radical (OH). Measurements of rates for many of the thousands of identified volatile organic compounds (VOCs) have yet to be determined experimentally. We have developed a new technique for the rapid determination of gas-phase rate coefficients for the simultaneous reactions between multiple VOCs and OH. The method is tasted across a range of scenarios and is used to derive new values.
David O. Topping, James Allan, M. Rami Alfarra, and Bernard Aumont
Geosci. Model Dev., 10, 2365–2377, https://doi.org/10.5194/gmd-10-2365-2017, https://doi.org/10.5194/gmd-10-2365-2017, 2017
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Our ability to model the chemical and thermodynamic processes that lead to secondary organic aerosol (SOA) formation is thought to be hampered by the complexity of the system. In this proof of concept study, the ability to train supervised methods to predict electron impact ionisation (EI) mass spectra for the AMS is evaluated to facilitate improved model evaluation. The study demonstrates the use of a methodology that would be improved with more training data and data from simple mixed systems.
Camille Mouchel-Vallon, Laurent Deguillaume, Anne Monod, Hélène Perroux, Clémence Rose, Giovanni Ghigo, Yoann Long, Maud Leriche, Bernard Aumont, Luc Patryl, Patrick Armand, and Nadine Chaumerliac
Geosci. Model Dev., 10, 1339–1362, https://doi.org/10.5194/gmd-10-1339-2017, https://doi.org/10.5194/gmd-10-1339-2017, 2017
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The Cloud Explicit Physico-chemical Scheme (CLEPS 1.0) describes oxidation of water-soluble organic compounds resulting from isoprene oxidation. It is based on structure activity relationships (SARs) (global rate constants and branching ratios for HO• abstraction and addition) and GROMHE SAR (Henry's law constants for undocumented species). It is coupled to the MCM gas phase mechanism and is included in a model using the DSMACC model and KPP to analyze experimental and field data.
Renee C. McVay, Xuan Zhang, Bernard Aumont, Richard Valorso, Marie Camredon, Yuyi S. La, Paul O. Wennberg, and John H. Seinfeld
Atmos. Chem. Phys., 16, 2785–2802, https://doi.org/10.5194/acp-16-2785-2016, https://doi.org/10.5194/acp-16-2785-2016, 2016
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Secondary organic aerosol (SOA) affects climate change, human health, and cloud formation. We examine SOA formation from the biogenic hydrocarbon α-pinene and observe unexpected experimental results that run contrary to model predictions. Various processes are explored via modeling to rationalize the observations. The paper identifies the importance of further constraining via experiments various steps in the chemical mechanism in order to accurately predict SOA worldwide.
David Topping, Mark Barley, Michael K. Bane, Nicholas Higham, Bernard Aumont, Nicholas Dingle, and Gordon McFiggans
Geosci. Model Dev., 9, 899–914, https://doi.org/10.5194/gmd-9-899-2016, https://doi.org/10.5194/gmd-9-899-2016, 2016
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In this paper we describe the development and application of a new web-based and open-source facility, UManSysProp (http://umansysprop .seaes.manchester.ac.uk), for automating predictions of molecular and atmospheric aerosol properties. Current facilities include pure component vapour pressures, critical properties, and sub-cooled densities of organic molecules; activity coefficient predictions for mixed inorganic-organic liquid systems; hygroscopic growth factors and CCN activation potential.
Y. S. La, M. Camredon, P. J. Ziemann, R. Valorso, A. Matsunaga, V. Lannuque, J. Lee-Taylor, A. Hodzic, S. Madronich, and B. Aumont
Atmos. Chem. Phys., 16, 1417–1431, https://doi.org/10.5194/acp-16-1417-2016, https://doi.org/10.5194/acp-16-1417-2016, 2016
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The potential impact of chamber walls on the loss of gaseous organic species and secondary organic aerosol (SOA) formation has been explored using the GECKO-A modeling tool, which explicitly represents SOA formation and gas-wall partitioning. The model was compared with 41 smog chamber experiments of SOA formation under OH oxidation of alkane and alkene serie. The organic vapor loss to the chamber walls is found to affect SOA yields as well as the composition of the gas and the particle phase.
M. E. Jenkin, J. C. Young, and A. R. Rickard
Atmos. Chem. Phys., 15, 11433–11459, https://doi.org/10.5194/acp-15-11433-2015, https://doi.org/10.5194/acp-15-11433-2015, 2015
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Atmospheric isoprene oxidation has an important effect on the formation of pollutants such as ozone and particles. A reliable representation is an essential component of climate change/air quality models. Systematic updates to the detailed chemistry in the MCM are described, with reference to recently reported kinetic/mechanistic data. Results of box model calculations are used to illustrate the impacts of the updates, with particular focus on the key atmospheric cycles involving HOx and NOx.
R. E. Dunmore, J. R. Hopkins, R. T. Lidster, J. D. Lee, M. J. Evans, A. R. Rickard, A. C. Lewis, and J. F. Hamilton
Atmos. Chem. Phys., 15, 9983–9996, https://doi.org/10.5194/acp-15-9983-2015, https://doi.org/10.5194/acp-15-9983-2015, 2015
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Technological shifts between fuel sources have had unexpected impacts on atmospheric composition and these significant changes can go undetected if source-specific monitoring infrastructure is not in place. We present chemically comprehensive, continuous measurements of organic compounds in a developed megacity (London), that show diesel-related hydrocarbons can dominate reactive carbon and ozone formation potential, highlighting a serious underestimation of this source in emission inventories.
M. J. Newland, A. R. Rickard, L. Vereecken, A. Muñoz, M. Ródenas, and W. J. Bloss
Atmos. Chem. Phys., 15, 9521–9536, https://doi.org/10.5194/acp-15-9521-2015, https://doi.org/10.5194/acp-15-9521-2015, 2015
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Stabilised Criegee intermediates (SCIs) are formed through alkene-ozone reactions, which occur throughout the atmospheric boundary layer. Recent direct laboratory studies have shown that SCI react rapidly with SO2, NO2 and other trace gases, affecting air quality and climate. We present experimental data from the EUPHORE atmospheric simulation chamber, in which we determine the effects of the ozonolysis of isoprene, on the oxidation of SO2 as a function of H2O and dimethyl sulfide concentration.
A. Hodzic, S. Madronich, P. S. Kasibhatla, G. Tyndall, B. Aumont, J. L. Jimenez, J. Lee-Taylor, and J. Orlando
Atmos. Chem. Phys., 15, 9253–9269, https://doi.org/10.5194/acp-15-9253-2015, https://doi.org/10.5194/acp-15-9253-2015, 2015
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Our study combines process and global chemistry modeling to investigate the potential effect of gas- and particle-phase organic photolysis reactions on the formation and lifetime of secondary organic aerosols (SOAs). Photolysis of the oxidation intermediates that partition between gas and particle phases to form SOA is not included in 3D models. Our results suggest that exposure to UV light can suppress the formation of SOA or even lead to its substantial loss (comparable to wet deposition).
K. P. Wyche, P. S. Monks, K. L. Smallbone, J. F. Hamilton, M. R. Alfarra, A. R. Rickard, G. B. McFiggans, M. E. Jenkin, W. J. Bloss, A. C. Ryan, C. N. Hewitt, and A. R. MacKenzie
Atmos. Chem. Phys., 15, 8077–8100, https://doi.org/10.5194/acp-15-8077-2015, https://doi.org/10.5194/acp-15-8077-2015, 2015
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This paper describes a new ensemble methodology for the statistical analysis of atmospheric gas- & particle-phase composition data sets. The methodology reduces the huge amount of data derived from many chamber experiments to show that organic reactivity & resultant particle formation can be mapped into unique clusters in statistical space. The model generated is used to map more realistic plant mesocosm oxidation data, the projection of which gives insight into reactive pathways & precursors.
O. J. Squire, A. T. Archibald, P. T. Griffiths, M. E. Jenkin, D. Smith, and J. A. Pyle
Atmos. Chem. Phys., 15, 5123–5143, https://doi.org/10.5194/acp-15-5123-2015, https://doi.org/10.5194/acp-15-5123-2015, 2015
C. Denjean, P. Formenti, B. Picquet-Varrault, M. Camredon, E. Pangui, P. Zapf, Y. Katrib, C. Giorio, A. Tapparo, B. Temime-Roussel, A. Monod, B. Aumont, and J. F. Doussin
Atmos. Chem. Phys., 15, 883–897, https://doi.org/10.5194/acp-15-883-2015, https://doi.org/10.5194/acp-15-883-2015, 2015
J. Lee-Taylor, A. Hodzic, S. Madronich, B. Aumont, M. Camredon, and R. Valorso
Atmos. Chem. Phys., 15, 595–615, https://doi.org/10.5194/acp-15-595-2015, https://doi.org/10.5194/acp-15-595-2015, 2015
J. W. Taylor, J. D. Allan, G. Allen, H. Coe, P. I. Williams, M. J. Flynn, M. Le Breton, J. B. A. Muller, C. J. Percival, D. Oram, G. Forster, J. D. Lee, A. R. Rickard, M. Parrington, and P. I. Palmer
Atmos. Chem. Phys., 14, 13755–13771, https://doi.org/10.5194/acp-14-13755-2014, https://doi.org/10.5194/acp-14-13755-2014, 2014
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We present a case study of BC wet removal by examining aerosol properties in three biomass burning plumes, one of which passed through a precipitating cloud. Nucleation scavenging preferentially removed the largest and most coated BC-containing particles. Calculated single-scattering albedo (SSA) showed little variation, as a large number of non-BC particles were also present in the precipitation-affected plume.
R. T. Lidster, J. F. Hamilton, J. D. Lee, A. C. Lewis, J. R. Hopkins, S. Punjabi, A. R. Rickard, and J. C. Young
Atmos. Chem. Phys., 14, 6677–6693, https://doi.org/10.5194/acp-14-6677-2014, https://doi.org/10.5194/acp-14-6677-2014, 2014
K. L. Pereira, J. F. Hamilton, A. R. Rickard, W. J. Bloss, M. S. Alam, M. Camredon, A. Muñoz, M. Vázquez, E. Borrás, and M. Ródenas
Atmos. Chem. Phys., 14, 5349–5368, https://doi.org/10.5194/acp-14-5349-2014, https://doi.org/10.5194/acp-14-5349-2014, 2014
V. Michoud, A. Colomb, A. Borbon, K. Miet, M. Beekmann, M. Camredon, B. Aumont, S. Perrier, P. Zapf, G. Siour, W. Ait-Helal, C. Afif, A. Kukui, M. Furger, J. C. Dupont, M. Haeffelin, and J. F. Doussin
Atmos. Chem. Phys., 14, 2805–2822, https://doi.org/10.5194/acp-14-2805-2014, https://doi.org/10.5194/acp-14-2805-2014, 2014
X. Pang, A. C. Lewis, A. R. Rickard, M. T. Baeza-Romero, T. J. Adams, S. M. Ball, M. J. S. Daniels, I. C. A. Goodall, P. S. Monks, S. Peppe, M. Ródenas García, P. Sánchez, and A. Muñoz
Atmos. Meas. Tech., 7, 373–389, https://doi.org/10.5194/amt-7-373-2014, https://doi.org/10.5194/amt-7-373-2014, 2014
M. Ammann, R. A. Cox, J. N. Crowley, M. E. Jenkin, A. Mellouki, M. J. Rossi, J. Troe, and T. J. Wallington
Atmos. Chem. Phys., 13, 8045–8228, https://doi.org/10.5194/acp-13-8045-2013, https://doi.org/10.5194/acp-13-8045-2013, 2013
M. Parrington, P. I. Palmer, A. C. Lewis, J. D. Lee, A. R. Rickard, P. Di Carlo, J. W. Taylor, J. R. Hopkins, S. Punjabi, D. E. Oram, G. Forster, E. Aruffo, S. J. Moller, S. J.-B. Bauguitte, J. D. Allan, H. Coe, and R. J. Leigh
Atmos. Chem. Phys., 13, 7321–7341, https://doi.org/10.5194/acp-13-7321-2013, https://doi.org/10.5194/acp-13-7321-2013, 2013
P. I. Palmer, M. Parrington, J. D. Lee, A. C. Lewis, A. R. Rickard, P. F. Bernath, T. J. Duck, D. L. Waugh, D. W. Tarasick, S. Andrews, E. Aruffo, L. J. Bailey, E. Barrett, S. J.-B. Bauguitte, K. R. Curry, P. Di Carlo, L. Chisholm, L. Dan, G. Forster, J. E. Franklin, M. D. Gibson, D. Griffin, D. Helmig, J. R. Hopkins, J. T. Hopper, M. E. Jenkin, D. Kindred, J. Kliever, M. Le Breton, S. Matthiesen, M. Maurice, S. Moller, D. P. Moore, D. E. Oram, S. J. O'Shea, R. C. Owen, C. M. L. S. Pagniello, S. Pawson, C. J. Percival, J. R. Pierce, S. Punjabi, R. M. Purvis, J. J. Remedios, K. M. Rotermund, K. M. Sakamoto, A. M. da Silva, K. B. Strawbridge, K. Strong, J. Taylor, R. Trigwell, K. A. Tereszchuk, K. A. Walker, D. Weaver, C. Whaley, and J. C. Young
Atmos. Chem. Phys., 13, 6239–6261, https://doi.org/10.5194/acp-13-6239-2013, https://doi.org/10.5194/acp-13-6239-2013, 2013
C. Mouchel-Vallon, P. Bräuer, M. Camredon, R. Valorso, S. Madronich, H. Herrmann, and B. Aumont
Atmos. Chem. Phys., 13, 1023–1037, https://doi.org/10.5194/acp-13-1023-2013, https://doi.org/10.5194/acp-13-1023-2013, 2013
A. C. Lewis, M. J. Evans, J. R. Hopkins, S. Punjabi, K. A. Read, R. M. Purvis, S. J. Andrews, S. J. Moller, L. J. Carpenter, J. D. Lee, A. R. Rickard, P. I. Palmer, and M. Parrington
Atmos. Chem. Phys., 13, 851–867, https://doi.org/10.5194/acp-13-851-2013, https://doi.org/10.5194/acp-13-851-2013, 2013
V. Michoud, A. Kukui, M. Camredon, A. Colomb, A. Borbon, K. Miet, B. Aumont, M. Beekmann, R. Durand-Jolibois, S. Perrier, P. Zapf, G. Siour, W. Ait-Helal, N. Locoge, S. Sauvage, C. Afif, V. Gros, M. Furger, G. Ancellet, and J. F. Doussin
Atmos. Chem. Phys., 12, 11951–11974, https://doi.org/10.5194/acp-12-11951-2012, https://doi.org/10.5194/acp-12-11951-2012, 2012
Related subject area
Subject: Gases | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Chemistry–climate feedback of atmospheric methane in a methane-emission-flux-driven chemistry–climate model
Surface ozone trend variability across the United States and the impact of heat waves (1990–2023)
Sensitivity of climate effects of hydrogen to leakage size, location, and chemical background
Evaluating tropospheric nitrogen dioxide in UKCA using OMI satellite retrievals over south and east Asia
Technical note: A comparative study of chemistry schemes for volcanic sulfur dioxide in Lagrangian transport simulations – a case study of the 2019 Raikoke eruption
Revisiting the high tropospheric ozone over southern Africa: role of biomass burning and anthropogenic emissions
Monoterpene oxidation pathways initiated by acyl peroxy radical addition
Local and transboundary contributions to NOy loadings across East Asia using CMAQ-ISAM and a GEMS-informed emission inventory during the winter–spring transition
Estimating the variability in NOx emissions from Wuhan with TROPOMI NO2 data during 2018 to 2023
Enhanced understanding of atmospheric blocking modulation on ozone dynamics within a high-resolution Earth system model
Natural emissions of VOC and NOx over Africa constrained by TROPOMI HCHO and NO2 data using the MAGRITTEv1.1 model
Anthropogenic emission controls reduce summertime ozone–temperature sensitivity in the United States
Investigating the response of China's surface ozone concentration to the future changes of multiple factors
Assessing the relative impacts of satellite ozone and its precursor observations to improve global tropospheric ozone analysis using multiple chemical reanalysis systems
Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate
Air-pollution-satellite-based CO2 emission inversion: system evaluation, sensitivity analysis, and future research direction
Insights into ozone pollution control in urban areas by decoupling meteorological factors based on machine learning
Quantification of regional net CO2 flux errors in the Orbiting Carbon Observatory-2 (OCO-2) v10 model intercomparison project (MIP) ensemble using airborne measurements
Reactive nitrogen in and around the northeastern and mid-Atlantic US: sources, sinks, and connections with ozone
Preindustrial-to-present-day changes in atmospheric carbon monoxide: agreement and gaps between ice archives and global model reconstructions
Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska, during ALPACA-2022
Urban ozone formation and sensitivities to volatile chemical products, cooking emissions, and NOx upwind of and within two Los Angeles Basin cities
Causes of growing middle-to-upper tropospheric ozone over the northwest Pacific region
Impact of introducing electric vehicles on ground-level O3 and PM2.5 in the Greater Tokyo Area: yearly trends and the importance of changes in the urban heat island effect
Modelling Arctic Lower Tropospheric Ozone: processes controlling seasonal variations
South Asia ammonia emission inversion through assimilating IASI observations
Constraining the budget of NOx and VOCs at a remote Tropical island using multi-platform observations and WRF-Chem model simulations
A CO2–Δ14CO2 inversion setup for estimating European fossil CO2 emissions
Maximum ozone concentrations in the southwestern US and Texas: implications of the growing predominance of the background contribution
Derivation of atmospheric reaction mechanisms for volatile organic compounds by the SAPRC mechanism generation system (MechGen)
Comparative ozone production sensitivity to NOx and VOCs in Quito, Ecuador and Santiago, Chile: implications for control strategies in times of climate action
Seasonal, regional, and vertical characteristics of high-carbon-monoxide plumes along with their associated ozone anomalies, as seen by IAGOS between 2002 and 2019
Tropospheric ozone trends and attributions over East and Southeast Asia in 1995–2019: An integrated assessment using statistical methods, machine learning models, and multiple chemical transport models
The potential of drone observations to improve air quality predictions by 4D-Var
Process analysis of elevated concentrations of organic acids at Whiteface Mountain, New York
Sensitivity of climate-chemistry model simulated atmospheric composition to lightning-produced NOx parameterizations based on lightning frequency
Ozone source attribution in polluted European areas during summer 2017 as simulated with MECO(n)
Characterization of reactive nitrogen in the global upper troposphere using recent and historical commercial and research aircraft campaigns and GEOS-Chem
Opinion: Challenges and needs of tropospheric chemical mechanism development
Decrease of the European NOx anthropogenic emissions between 2005 and 2019 as seen from the OMI and TROPOMI NO2 satellite observations
Tracking daily NOx emissions from an urban agglomeration based on TROPOMI NO2 and a local ensemble transform Kalman filter
The atmospheric oxidizing capacity in China – Part 2: Sensitivity to emissions of primary pollutants
Role of chemical production and depositional losses on formaldehyde in the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM)
Review of source analyses of ambient volatile organic compounds considering reactive losses: methods of reducing loss effects, impacts of losses, and sources
Interpreting summertime hourly variation of NO2 columns with implications for geostationary satellite applications
An investigation into atmospheric nitrous acid (HONO) processes in South Korea
Soil Deposition of Atmospheric Hydrogen Constrained using Planetary Scale Observations
Performance evaluation of UKESM1 for surface ozone across the pan-tropics
Constraining light dependency in modeled emissions through comparison to observed biogenic volatile organic compound (BVOC) concentrations in a southeastern US forest
A global re-analysis of regionally resolved emissions and atmospheric mole fractions of SF6 for the period 2005–2021
Laura Stecher, Franziska Winterstein, Patrick Jöckel, Michael Ponater, Mariano Mertens, and Martin Dameris
Atmos. Chem. Phys., 25, 5133–5158, https://doi.org/10.5194/acp-25-5133-2025, https://doi.org/10.5194/acp-25-5133-2025, 2025
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Methane, the second most important anthropogenic greenhouse gas, is chemically decomposed in the atmosphere. The chemical sink of atmospheric methane is not constant but depends on the temperature and on the abundance of its reaction partners. In this study, we use a global chemistry–climate model to assess the feedback of atmospheric methane induced by changes in the chemical sink in a warming climate and its implications for the chemical composition and the surface air temperature change.
Kai-Lan Chang, Brian C. McDonald, Colin Harkins, and Owen R. Cooper
Atmos. Chem. Phys., 25, 5101–5132, https://doi.org/10.5194/acp-25-5101-2025, https://doi.org/10.5194/acp-25-5101-2025, 2025
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Exposure to high levels of ozone can be harmful to human health. This study shows consistent and robust evidence of decreasing ozone extremes across much of the United States over the period from 1990 to 2023, previously attributed to ozone precursor emission controls. Nevertheless, we also show that the increasing heat wave frequencies are likely to contribute to additional ozone exceedances, slowing the progress of decreasing the frequency of ozone exceedances.
Ragnhild Bieltvedt Skeie, Marit Sandstad, Srinath Krishnan, Gunnar Myhre, and Maria Sand
Atmos. Chem. Phys., 25, 4929–4942, https://doi.org/10.5194/acp-25-4929-2025, https://doi.org/10.5194/acp-25-4929-2025, 2025
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Hydrogen leakages can alter the amount of climate gases in the atmosphere and hence have a climate impact. In this study we investigate, using an atmospheric chemistry model, how this indirect climate effect differs with different amounts of leakages and with where the hydrogen leaks and if this effect changes in the future. The effect is largest for emissions far from areas where hydrogen is removed from the atmosphere by the soil, but these are not relevant locations for a future hydrogen economy.
Alok K. Pandey, David S. Stevenson, Alcide Zhao, Richard J. Pope, Ryan Hossaini, Krishan Kumar, and Martyn P. Chipperfield
Atmos. Chem. Phys., 25, 4785–4802, https://doi.org/10.5194/acp-25-4785-2025, https://doi.org/10.5194/acp-25-4785-2025, 2025
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Nitrogen dioxide is an air pollutant largely controlled by human activity that affects ozone, methane, and aerosols. Satellite instruments can quantify column NO2 and, by carefully matching the time and location of measurements, enable evaluation of model simulations. NO2 over south and east Asia is assessed, showing that the model captures not only many features of the measurements, but also important differences that suggest model deficiencies in representing several aspects of the atmospheric chemistry of NO2.
Mingzhao Liu, Lars Hoffmann, Jens-Uwe Grooß, Zhongyin Cai, Sabine Grießbach, and Yi Heng
Atmos. Chem. Phys., 25, 4403–4418, https://doi.org/10.5194/acp-25-4403-2025, https://doi.org/10.5194/acp-25-4403-2025, 2025
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We studied the transport and chemical decomposition of volcanic SO2, focusing on the 2019 Raikoke event. By comparing two different chemistry modeling schemes, we found that including complex chemical reactions leads to a more accurate prediction of how long SO2 stays in the atmosphere. This research helps improve our understanding of volcanic pollution and its impact on air quality and climate, providing better tools for scientists to track and predict the movement of these pollutants.
Yufen Wang, Ke Li, Xi Chen, Zhenjiang Yang, Minglong Tang, Pascoal M. D. Campos, Yang Yang, Xu Yue, and Hong Liao
Atmos. Chem. Phys., 25, 4455–4475, https://doi.org/10.5194/acp-25-4455-2025, https://doi.org/10.5194/acp-25-4455-2025, 2025
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The impacts of biomass burning and anthropogenic emissions on high tropospheric ozone levels are not well studied in southern Africa. We combined model simulations with recent observations at the surface and from space to quantify tropospheric ozone and its drivers in southern Africa. Our work focuses on the impact of emissions from different sources at different spatial scales, contributing to a comprehensive understanding of air pollution drivers and their uncertainties in southern Africa.
Dominika Pasik, Thomas Golin Almeida, Emelda Ahongshangbam, Siddharth Iyer, and Nanna Myllys
Atmos. Chem. Phys., 25, 4313–4331, https://doi.org/10.5194/acp-25-4313-2025, https://doi.org/10.5194/acp-25-4313-2025, 2025
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We used quantum chemistry methods to investigate the oxidation mechanisms of acyl peroxy radicals (APRs) with various monoterpenes. Our findings reveal unique oxidation pathways for different monoterpenes, leading to either chain-terminating products or highly reactive intermediates that can contribute to particle formation in the atmosphere. This research highlights APRs as potentially significant but underexplored atmospheric oxidants that may influence future approaches to modelling climate.
Jincheol Park, Yunsoo Choi, and Sagun Kayastha
Atmos. Chem. Phys., 25, 4291–4311, https://doi.org/10.5194/acp-25-4291-2025, https://doi.org/10.5194/acp-25-4291-2025, 2025
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We investigated NOx emission contributions to NOy loadings across five regions of East Asia during the 2022 winter–spring transition through chemical transport modeling informed by satellite data. As seasons progress, local contributions within each region to its NOy budget decreased from 32 %–43 % to 23 %–30 %, while transboundary contributions increased from 16 %–33 % to 27 %–37 %, driven by a shift in synoptic settings that allowed pollutants to spread more broadly across the regions.
Qianqian Zhang, K. Folkert Boersma, Chiel van der Laan, Alba Mols, Bin Zhao, Shengyue Li, and Yuepeng Pan
Atmos. Chem. Phys., 25, 3313–3326, https://doi.org/10.5194/acp-25-3313-2025, https://doi.org/10.5194/acp-25-3313-2025, 2025
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Accurate NOx emission estimates are required to better understand air pollution. This study investigates and demonstrates the ability of the superposition column model in combination with TROPOMI tropospheric NO2 column data to estimate city-scale NOx emissions and lifetimes and their variabilities. The results of this work nevertheless confirm the strength of the superposition column model in estimating urban NOx emissions with reasonable accuracy.
Wenbin Kou, Yang Gao, Dan Tong, Xiaojie Guo, Xiadong An, Wenyu Liu, Mengshi Cui, Xiuwen Guo, Shaoqing Zhang, Huiwang Gao, and Lixin Wu
Atmos. Chem. Phys., 25, 3029–3048, https://doi.org/10.5194/acp-25-3029-2025, https://doi.org/10.5194/acp-25-3029-2025, 2025
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Unlike traditional numerical studies, we apply a high-resolution Earth system model, improving simulations of surface ozone and large-scale circulations such as atmospheric blocking. Besides local heat waves, we quantify the impact of atmospheric blocking on downstream ozone concentrations, which is closely associated with the blocking position. We identify three major pathways of Rossby wave propagation, stressing the critical role of large-scale circulation in regional air quality.
Beata Opacka, Trissevgeni Stavrakou, Jean-François Müller, Isabelle De Smedt, Jos van Geffen, Eloise A. Marais, Rebekah P. Horner, Dylan B. Millet, Kelly C. Wells, and Alex B. Guenther
Atmos. Chem. Phys., 25, 2863–2894, https://doi.org/10.5194/acp-25-2863-2025, https://doi.org/10.5194/acp-25-2863-2025, 2025
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Vegetation releases biogenic volatile organic compounds, while soils and lightning contribute to the natural emissions of nitrogen oxides into the atmosphere. These gases interact in complex ways. Using satellite data and models, we developed a new method to simultaneously optimize these natural emissions over Africa in 2019. Our approach resulted in an increase in natural emissions, supported by independent data indicating that current estimates are underestimated.
Shuai Li, Haolin Wang, and Xiao Lu
Atmos. Chem. Phys., 25, 2725–2743, https://doi.org/10.5194/acp-25-2725-2025, https://doi.org/10.5194/acp-25-2725-2025, 2025
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Summertime ozone–temperature sensitivity has decreased by 50 % from 3.0 ppbv per K in 1990 to 1.5 ppb per K in 2021 in the US. GEOS-Chem simulations show that anthropogenic nitrogen oxide emission reduction is the dominant driver of ozone–temperature sensitivity decline by influencing both temperature direct and temperature indirect processes. Reduced ozone–temperature sensitivity has decreased ozone enhancement from low to high temperatures by an average of 6.8 ppbv across the US.
Jinya Yang, Yutong Wang, Lei Zhang, and Yu Zhao
Atmos. Chem. Phys., 25, 2649–2666, https://doi.org/10.5194/acp-25-2649-2025, https://doi.org/10.5194/acp-25-2649-2025, 2025
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We develop a modeling framework to predict future ozone concentrations (till the 2060s) in China following an IPCC scenario. We evaluate the contributions of climatic, anthropogenic, and biogenic factors by season and region. We find persistent emission controls will alter the nonlinear response of ozone to its precursors and dominate the declining ozone level. The outcomes highlight the importance of human actions, even with a climate penalty on air quality.
Takashi Sekiya, Emanuele Emili, Kazuyuki Miyazaki, Antje Inness, Zhen Qu, R. Bradley Pierce, Dylan Jones, Helen Worden, William Y. Y. Cheng, Vincent Huijnen, and Gerbrand Koren
Atmos. Chem. Phys., 25, 2243–2268, https://doi.org/10.5194/acp-25-2243-2025, https://doi.org/10.5194/acp-25-2243-2025, 2025
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Five global chemical reanalysis datasets were used to assess the relative impacts of assimilating satellite ozone and its precursor measurements on tropospheric ozone analyses for 2010. The multiple reanalysis system comparison allows an evaluation of the dependency of the impacts on different reanalysis systems. The results suggested the importance of satellite ozone and its precursor measurements for improving ozone analysis in the whole troposphere, with varying magnitudes among the systems.
Maureen Beaudor, Didier Hauglustaine, Juliette Lathière, Martin Van Damme, Lieven Clarisse, and Nicolas Vuichard
Atmos. Chem. Phys., 25, 2017–2046, https://doi.org/10.5194/acp-25-2017-2025, https://doi.org/10.5194/acp-25-2017-2025, 2025
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Agriculture is the biggest ammonia (NH3) source, impacting air quality, climate, and ecosystems. Because of food demand, NH3 emissions are projected to rise by 2100. Using a global model, we analyzed the impact of present and future NH3 emissions generated from a land model. Our results show improved ammonia patterns compared to a reference inventory. Future scenarios predict up to 70 % increase in global NH3 burden, with significant changes in radiative forcing that can greatly elevate N2O.
Hui Li, Jiaxin Qiu, and Bo Zheng
Atmos. Chem. Phys., 25, 1949–1963, https://doi.org/10.5194/acp-25-1949-2025, https://doi.org/10.5194/acp-25-1949-2025, 2025
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We conduct a sensitivity analysis with 31 tests on various factors including prior emissions, model resolution, satellite constraint, and other system configurations to assess the vulnerability of emission estimates across temporal, sectoral, and regional dimensions. This reveals the robustness of emissions estimated by this air-pollution-satellite-based CO2 emission inversion system, with relative change between tests and base inversion below 4.0 % for national annual NOx and CO2 emissions.
Yuqing Qiu, Xin Li, Wenxuan Chai, Yi Liu, Mengdi Song, Xudong Tian, Qiaoli Zou, Wenjun Lou, Wangyao Zhang, Juan Li, and Yuanhang Zhang
Atmos. Chem. Phys., 25, 1749–1763, https://doi.org/10.5194/acp-25-1749-2025, https://doi.org/10.5194/acp-25-1749-2025, 2025
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The chemical reactions of ozone (O3) formation are related to meteorology and local emissions. Here, a random forest approach was used to eliminate the effects of meteorological factors (dispersion or transport) on O3 and its precursors. Variations in the sensitivity of O3 formation and the apportionment of emission sources were revealed after meteorological normalization. Our results suggest that meteorological variations should be considered when diagnosing O3 formation.
Jeongmin Yun, Junjie Liu, Brendan Byrne, Brad Weir, Lesley E. Ott, Kathryn McKain, Bianca C. Baier, Luciana V. Gatti, and Sebastien C. Biraud
Atmos. Chem. Phys., 25, 1725–1748, https://doi.org/10.5194/acp-25-1725-2025, https://doi.org/10.5194/acp-25-1725-2025, 2025
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This study quantifies errors in regional net surface–atmosphere CO2 flux estimates from an inverse model ensemble using airborne CO2 measurements. Our results show that flux error estimates based on observations significantly exceed those computed from the ensemble spread of flux estimates in regions with high fossil fuel emissions. This finding suggests the presence of systematic biases in the inversion estimates, associated with errors in the fossil fuel emissions common to all models.
Min Huang, Gregory R. Carmichael, Kevin W. Bowman, Isabelle De Smedt, Andreas Colliander, Michael H. Cosh, Sujay V. Kumar, Alex B. Guenther, Scott J. Janz, Ryan M. Stauffer, Anne M. Thompson, Niko M. Fedkin, Robert J. Swap, John D. Bolten, and Alicia T. Joseph
Atmos. Chem. Phys., 25, 1449–1476, https://doi.org/10.5194/acp-25-1449-2025, https://doi.org/10.5194/acp-25-1449-2025, 2025
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We use model simulations along with multiplatform, multidisciplinary observations and a range of analysis methods to estimate and understand the distributions, temporal changes, and impacts of reactive nitrogen and ozone over the most populous US region that has undergone significant environmental changes. Deposition, biogenic emissions, and extra-regional sources have been playing increasingly important roles in controlling pollutant budgets in this area as local anthropogenic emissions drop.
Xavier Faïn, Sophie Szopa, Vaishali Naïk, Patricia Martinerie, David M. Etheridge, Rachael H. Rhodes, Cathy M. Trudinger, Vasilii V. Petrenko, Kévin Fourteau, and Philip Place
Atmos. Chem. Phys., 25, 1105–1119, https://doi.org/10.5194/acp-25-1105-2025, https://doi.org/10.5194/acp-25-1105-2025, 2025
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Carbon monoxide (CO) plays a crucial role in the atmosphere's oxidizing capacity. In this study, we analyse how historical (1850–2014) [CO] outputs from state-of-the-art global chemistry–climate models over Greenland and Antarctica are able to capture both absolute values and trends recorded in multi-site ice archives. A disparity in [CO] growth rates emerges in the Northern Hemisphere between models and observations from 1920–1975 CE, possibly linked to uncertainties in CO emission factors.
Natalie Brett, Kathy S. Law, Steve R. Arnold, Javier G. Fochesatto, Jean-Christophe Raut, Tatsuo Onishi, Robert Gilliam, Kathleen Fahey, Deanna Huff, George Pouliot, Brice Barret, Elsa Dieudonné, Roman Pohorsky, Julia Schmale, Andrea Baccarini, Slimane Bekki, Gianluca Pappaccogli, Federico Scoto, Stefano Decesari, Antonio Donateo, Meeta Cesler-Maloney, William Simpson, Patrice Medina, Barbara D'Anna, Brice Temime-Roussel, Joel Savarino, Sarah Albertin, Jingqiu Mao, Becky Alexander, Allison Moon, Peter F. DeCarlo, Vanessa Selimovic, Robert Yokelson, and Ellis S. Robinson
Atmos. Chem. Phys., 25, 1063–1104, https://doi.org/10.5194/acp-25-1063-2025, https://doi.org/10.5194/acp-25-1063-2025, 2025
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Processes influencing dispersion of local anthropogenic pollution in Arctic wintertime are investigated with Lagrangian dispersion modelling. Simulated power plant plume rise that considers temperature inversion layers improves results compared to observations (interior Alaska). Modelled surface concentrations are improved by representation of vertical mixing and emission estimates. Large increases in diesel vehicle emissions at temperatures reaching −35°C are required to reproduce observed NOx.
Chelsea E. Stockwell, Matthew M. Coggon, Rebecca H. Schwantes, Colin Harkins, Bert Verreyken, Congmeng Lyu, Qindan Zhu, Lu Xu, Jessica B. Gilman, Aaron Lamplugh, Jeff Peischl, Michael A. Robinson, Patrick R. Veres, Meng Li, Andrew W. Rollins, Kristen Zuraski, Sunil Baidar, Shang Liu, Toshihiro Kuwayama, Steven S. Brown, Brian C. McDonald, and Carsten Warneke
Atmos. Chem. Phys., 25, 1121–1143, https://doi.org/10.5194/acp-25-1121-2025, https://doi.org/10.5194/acp-25-1121-2025, 2025
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In urban areas, emissions from everyday products like paints, cleaners, and personal care products, along with non-traditional sources such as cooking, are increasingly important and impact air quality. This study uses a box model to evaluate how these emissions impact ozone in the Los Angeles Basin and quantifies the impact of gaseous cooking emissions. Accurate representation of these and other anthropogenic sources in inventories is crucial for informing effective air quality policies.
Xiaodan Ma, Jianping Huang, Michaela I. Hegglin, Patrick Jöckel, and Tianliang Zhao
Atmos. Chem. Phys., 25, 943–958, https://doi.org/10.5194/acp-25-943-2025, https://doi.org/10.5194/acp-25-943-2025, 2025
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Our research explored changes in ozone levels in the northwest Pacific region over 30 years, revealing a significant increase in the middle-to-upper troposphere, especially during spring and summer. This rise is influenced by both stratospheric and tropospheric sources, which affect climate and air quality in East Asia. This work underscores the need for continued study to understand underlying mechanisms.
Hiroo Hata, Norifumi Mizushima, and Tomohiko Ihara
Atmos. Chem. Phys., 25, 1037–1061, https://doi.org/10.5194/acp-25-1037-2025, https://doi.org/10.5194/acp-25-1037-2025, 2025
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The introduction of battery electric vehicles (BEVs) is expected to reduce the primary air pollutants from vehicular exhaust and evaporative emissions while reducing the anthropogenic heat produced by vehicles, ultimately mitigating the urban heat island (UHI) effect. This study revealed the impact of introducing BEVs on the decrease in the UHI effect and the impact of BEVs on the formation of tropospheric ozone and fine particulate matter in the Greater Tokyo Area of Japan.
Wanmin Gong, Stephen R. Beagley, Kenjiro Toyota, Henrik Skov, Jesper Heile Christensen, Alexandru Lupu, Diane Pendlebury, Junhua Zhang, Ulas Im, Yugo Kanaya, Alfonso Saiz-Lopez, Roberto Sommariva, Peter Effertz, John W. Halfacre, Nis Jepsen, Rigel Kivi, Theodore K. Koenig, Katrin Müller, Claus Nordstrøm, Irina Petropavlovskikh, Paul B. Shepson, William R. Simpson, Sverre Solberg, Ralf M. Staebler, David W. Tarasick, Roeland Van Malderen, and Mika Vestenius
EGUsphere, https://doi.org/10.5194/egusphere-2024-3750, https://doi.org/10.5194/egusphere-2024-3750, 2025
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This study showed that the springtime O3 depletion plays a critical role in driving the surface O3 seasonal cycle in Central Arctic. The O3 depletion events, while occurring most notably within the lowest few hundred metres above the Arctic Ocean, can induce a 5–7 % of loss in the pan-Arctic tropospheric O3 burden during springtime. The study also found an enhancement in O3 and NOy (mostly PAN) concentrations in the Arctic due to northern boreal wildfires, particularly at altitudes.
Ji Xia, Yi Zhou, Li Fang, Yingfei Qi, Dehao Li, Hong Liao, and Jianbing Jin
EGUsphere, https://doi.org/10.5194/egusphere-2024-3938, https://doi.org/10.5194/egusphere-2024-3938, 2025
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This study established an ammonia emission inventory in South Asia via assimilation-based inversion system. The posterior emissions, calculated by integrating the CEDS inventory and IASI satellite observations, showed significant improvement over the prior. Validation against various measurements all support our posterior emission. It offers valuable insights of ammonia emissions for policymakers and researchers aiming to develop air quality management and mitigation strategies there.
Catalina Poraicu, Jean-François Müller, Trissevgeni Stavrakou, Crist Amelynck, Bert W. D. Verreyken, Niels Schoon, Corinne Vigouroux, Nicolas Kumps, Jérôme Brioude, Pierre Tulet, and Camille Mouchel-Vallon
EGUsphere, https://doi.org/10.5194/egusphere-2024-3555, https://doi.org/10.5194/egusphere-2024-3555, 2025
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We investigated the sources and impacts of nitrogen oxides and organic compounds over a remote tropical island. High-resolution WRF-Chem simulations were evaluated using in situ, FTIR and satellite measurements. This work highlights gaps in current models, like missing sources of key organic compounds and inaccuracies in emission inventories, emphasizing the importance of improving chemical and dynamical processes in atmospheric modelling for budget estimates in tropical regions.
Carlos Gómez-Ortiz, Guillaume Monteil, Sourish Basu, and Marko Scholze
Atmos. Chem. Phys., 25, 397–424, https://doi.org/10.5194/acp-25-397-2025, https://doi.org/10.5194/acp-25-397-2025, 2025
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In this paper, we test new implementations of our inverse modeling tool to estimate the weekly and regional CO2 emissions from fossil fuels in Europe. We use synthetic atmospheric observations of CO2 and radiocarbon (14CO2) to trace emissions to their sources, while separating the natural and fossil CO2. Our tool accurately estimates fossil CO2 emissions in densely monitored regions like western/central Europe. This approach aids in developing strategies for reducing CO2 emissions.
David D. Parrish, Ian C. Faloona, and Richard G. Derwent
Atmos. Chem. Phys., 25, 263–289, https://doi.org/10.5194/acp-25-263-2025, https://doi.org/10.5194/acp-25-263-2025, 2025
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Observation-based estimates of contributions to maximum ozone (O3) concentrations show that background O3 can exceed the air quality standard of 70 ppb in the southwestern US, precluding standard attainment. Over the past 4 decades, US anthropogenic O3 has decreased by a factor of ~ 6.3, while wildfire contributions have increased, so that the background now dominates maximum concentrations, even in Los Angeles, and the occurrence of maximum O3 has shifted from the eastern to the western US.
William P. L. Carter, Jia Jiang, John J. Orlando, and Kelley C. Barsanti
Atmos. Chem. Phys., 25, 199–242, https://doi.org/10.5194/acp-25-199-2025, https://doi.org/10.5194/acp-25-199-2025, 2025
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This paper describes the scientific basis for gas-phase atmospheric chemical mechanisms derived using the SAPRC mechanism generation system, MechGen. It can derive mechanisms for most organic compounds with C, H, O, or N atoms, including initial reactions of organics with OH, O3, NO3, and O3P or by photolysis, as well as the reactions of the various types of intermediates that are formed. The paper includes a description of areas of uncertainty where additional research and updates are needed.
María Cazorla, Melissa Trujillo, Rodrigo Seguel, and Laura Gallardo
EGUsphere, https://doi.org/10.5194/egusphere-2024-3720, https://doi.org/10.5194/egusphere-2024-3720, 2024
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The current climate emergency imposes the need to take actions in cities to curb ozone as a pollutant and a climate forcer. In this work we analyze how reducing the levels of ozone precursor would affect photochemical smog in Quito, Ecuador and Santiago, Chile. Results show that if environmental policy were implemented to reduce only nitrogen oxides, the production of ozone would increase substantially for which more integral solutions are needed.
Thibaut Lebourgeois, Bastien Sauvage, Pawel Wolff, Béatrice Josse, Virginie Marécal, Yasmine Bennouna, Romain Blot, Damien Boulanger, Hannah Clark, Jean-Marc Cousin, Philippe Nedelec, and Valérie Thouret
Atmos. Chem. Phys., 24, 13975–14004, https://doi.org/10.5194/acp-24-13975-2024, https://doi.org/10.5194/acp-24-13975-2024, 2024
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Our study examines intense-carbon-monoxide (CO) pollution events measured by commercial aircraft from the In-service Aircraft for a Global Observing System (IAGOS) research infrastructure. We combine these measurements with the SOFT-IO model to trace the origin of the observed CO. A comprehensive analysis of the geographical origin, source type, seasonal variation, and ozone levels of these pollution events is provided.
Xiao Lu, Yiming Liu, Jiayin Su, Xiang Weng, Tabish Ansari, Yuqiang Zhang, Guowen He, Yuqi Zhu, Haolin Wang, Ganquan Zeng, Jingyu Li, Cheng He, Shuai Li, Teerachai Amnuaylojaroen, Tim Butler, Qi Fan, Shaojia Fan, Grant L. Forster, Meng Gao, Jianlin Hu, Yugo Kanaya, Mohd Talib Latif, Keding Lu, Philippe Nédélec, Peer Nowack, Bastien Sauvage, Xiaobin Xu, Lin Zhang, Ke Li, Ja-Ho Koo, and Tatsuya Nagashima
EGUsphere, https://doi.org/10.5194/egusphere-2024-3702, https://doi.org/10.5194/egusphere-2024-3702, 2024
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This study analyzes summertime ozone trends in East and Southeast Asia derived from a comprehensive observational database spanning from 1995 to 2019, incorporating aircraft observations, ozonesonde data, and measurements from 2500 surface sites. Multiple models are applied to attribute to changes in anthropogenic emissions and climate. The results highlight increases in anthropogenic emission are the primary driver of ozone increases both in the free troposphere and at the surface.
Hassnae Erraji, Philipp Franke, Astrid Lampert, Tobias Schuldt, Ralf Tillmann, Andreas Wahner, and Anne Caroline Lange
Atmos. Chem. Phys., 24, 13913–13934, https://doi.org/10.5194/acp-24-13913-2024, https://doi.org/10.5194/acp-24-13913-2024, 2024
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Four-dimensional variational data assimilation allows for the simultaneous optimisation of initial values and emission rates by using trace-gas profiles from drone observations in a regional air quality model. Assimilated profiles positively impact the representation of air pollutants in the model by improving their vertical distribution and ground-level concentrations. This case study highlights the potential of drone data to enhance air quality analyses including local emission evaluation.
Christopher Lawrence, Mary Barth, John Orlando, Paul Casson, Richard Brandt, Daniel Kelting, Elizabeth Yerger, and Sara Lance
Atmos. Chem. Phys., 24, 13693–13713, https://doi.org/10.5194/acp-24-13693-2024, https://doi.org/10.5194/acp-24-13693-2024, 2024
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This work uses chemical transport and box modeling to study the gas- and aqueous-phase production of organic acid concentrations measured in cloud water at the summit of Whiteface Mountain on 1 July 2018. Isoprene was the major source of formic, acetic, and oxalic acid. Gas-phase chemistry greatly underestimated formic and acetic acid, indicating missing sources, while cloud chemistry was a key source of oxalic acid. More studies of organic acids are required to better constrain their sources.
Francisco J. Pérez-Invernón, Francisco J. Gordillo-Vázquez, Heidi Huntrieser, Patrick Jöckel, and Eric J. Bucsela
EGUsphere, https://doi.org/10.5194/egusphere-2024-3348, https://doi.org/10.5194/egusphere-2024-3348, 2024
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Lightning plays a significant role in tropospheric chemistry by producing substantial amounts of nitrogen oxides. According to recent estimates, thunderstorms that produce a higher lightning frequency rate also produce less nitrogen oxide per flash. We implemented the dependency of nitrogen oxide production per flash on lightning flash frequency in a chemical atmospheric model.
Markus Kilian, Volker Grewe, Patrick Jöckel, Astrid Kerkweg, Mariano Mertens, Andreas Zahn, and Helmut Ziereis
Atmos. Chem. Phys., 24, 13503–13523, https://doi.org/10.5194/acp-24-13503-2024, https://doi.org/10.5194/acp-24-13503-2024, 2024
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Anthropogenic emissions are a major source of precursors of tropospheric ozone. As ozone formation is highly non-linear, we apply a global–regional chemistry–climate model with a source attribution method (tagging) to quantify the contribution of anthropogenic emissions to ozone. Our analysis shows that the contribution of European anthropogenic emissions largely increases during large ozone periods, indicating that emissions from these sectors drive ozone values.
Nana Wei, Eloise A. Marais, Gongda Lu, Robert G. Ryan, and Bastien Sauvage
EGUsphere, https://doi.org/10.5194/egusphere-2024-3388, https://doi.org/10.5194/egusphere-2024-3388, 2024
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This study uses reactive nitrogen observations from NASA DC-8 research aircraft and The In-service Aircraft for a Global Observing System (IAGOS) campaigns to characterise reactive nitrogen seasonality and composition in the global upper troposphere and to diagnose the greatest knowledge gaps from comparison to a state-of-science model GEOS-Chem that need to be resolved for climate, nitrogen cycle and air pollution assessments.
Barbara Ervens, Andrew Rickard, Bernard Aumont, William P. L. Carter, Max McGillen, Abdelwahid Mellouki, John Orlando, Bénédicte Picquet-Varrault, Paul Seakins, William R. Stockwell, Luc Vereecken, and Timothy J. Wallington
Atmos. Chem. Phys., 24, 13317–13339, https://doi.org/10.5194/acp-24-13317-2024, https://doi.org/10.5194/acp-24-13317-2024, 2024
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Chemical mechanisms describe the chemical processes in atmospheric models that are used to describe the changes in the atmospheric composition. Therefore, accurate chemical mechanisms are necessary to predict the evolution of air pollution and climate change. The article describes all steps that are needed to build chemical mechanisms and discusses the advances and needs of experimental and theoretical research activities needed to build reliable chemical mechanisms.
Audrey Fortems-Cheiney, Grégoire Broquet, Robin Plauchu, Elise Potier, Antoine Berchet, Isabelle Pison, Adrien Martinez, Rimal Abeed, Gaelle Dufour, Adriana Coman, Dilek Savas, Guillaume Siour, Henk Eskes, Hugo A. C. Denier van der Gon, and Stijn N. C. Dellaert
EGUsphere, https://doi.org/10.5194/egusphere-2024-3679, https://doi.org/10.5194/egusphere-2024-3679, 2024
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This study assesses the potential of the OMI and TROPOMI satellite observations to inform about the evolution of NOx anthropogenic emissions between year 2005 and year 2019 at the regional to national scales in Europe. Both the OMI and TROPOMI inversions show decreases in European NOx anthropogenic emission budgets between 2005 and 2019, but with different magnitudes.
Yawen Kong, Bo Zheng, and Yuxi Liu
EGUsphere, https://doi.org/10.5194/egusphere-2024-2996, https://doi.org/10.5194/egusphere-2024-2996, 2024
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Current high-resolution satellite remote sensing technologies provide a unique opportunity to derive timely, high-resolution emission data. We developed an emission inversion system to assimilate satellite NO2 data to obtain daily, kilometer-scale NOx emission inventories. Our results enhance inventory accuracy, allowing us to capture the effects of pollution control policies on daily emissions (e.g., during COVID-19 lockdown) and improve fine-scale air quality modeling.
Jianing Dai, Guy P. Brasseur, Mihalis Vrekoussis, Maria Kanakidou, Kun Qu, Yijuan Zhang, Hongliang Zhang, and Tao Wang
Atmos. Chem. Phys., 24, 12943–12962, https://doi.org/10.5194/acp-24-12943-2024, https://doi.org/10.5194/acp-24-12943-2024, 2024
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This paper employs a regional chemical transport model to quantify the sensitivity of air pollutants and photochemical parameters to specified emission reductions in China for representative winter and summer conditions. The study provides insights into further air quality control in China with reduced primary emissions.
T. Nash Skipper, Emma L. D'Ambro, Forwood C. Wiser, V. Faye McNeill, Rebecca H. Schwantes, Barron H. Henderson, Ivan R. Piletic, Colleen B. Baublitz, Jesse O. Bash, Andrew R. Whitehill, Lukas C. Valin, Asher P. Mouat, Jennifer Kaiser, Glenn M. Wolfe, Jason M. St. Clair, Thomas F. Hanisco, Alan Fried, Bryan K. Place, and Havala O.T. Pye
Atmos. Chem. Phys., 24, 12903–12924, https://doi.org/10.5194/acp-24-12903-2024, https://doi.org/10.5194/acp-24-12903-2024, 2024
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We develop the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM) version 2 to improve predictions of formaldehyde in ambient air compared to satellite-, aircraft-, and ground-based observations. With the updated chemistry, we estimate the cancer risk from inhalation exposure to ambient formaldehyde across the contiguous USA and predict that 40 % of this risk is controllable through reductions in anthropogenic emissions of nitrogen oxides and reactive organic carbon.
Baoshuang Liu, Yao Gu, Yutong Wu, Qili Dai, Shaojie Song, Yinchang Feng, and Philip K. Hopke
Atmos. Chem. Phys., 24, 12861–12879, https://doi.org/10.5194/acp-24-12861-2024, https://doi.org/10.5194/acp-24-12861-2024, 2024
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Reactive loss of volatile organic compounds (VOCs) is a long-term issue yet to be resolved in VOC source analyses. We assess common methods of, and existing issues in, reducing losses, impacts of losses, and sources in current source analyses. We offer a potential supporting role for solving issues of VOC conversion. Source analyses of consumed VOCs that reacted to produce ozone and secondary organic aerosols can play an important role in the effective control of secondary pollution in air.
Deepangsu Chatterjee, Randall V. Martin, Chi Li, Dandan Zhang, Haihui Zhu, Daven K. Henze, James H. Crawford, Ronald C. Cohen, Lok N. Lamsal, and Alexander M. Cede
Atmos. Chem. Phys., 24, 12687–12706, https://doi.org/10.5194/acp-24-12687-2024, https://doi.org/10.5194/acp-24-12687-2024, 2024
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We investigate the hourly variation of NO2 columns and surface concentrations by applying the GEOS-Chem model to interpret aircraft and ground-based measurements over the US and Pandora sun photometer measurements over the US, Europe, and Asia. Corrections to the Pandora columns and finer model resolution improve the modeled representation of the summertime hourly variation of total NO2 columns to explain the weaker hourly variation in NO2 columns than at the surface.
Kiyeon Kim, Kyung Man Han, Chul Han Song, Hyojun Lee, Ross Beardsley, Jinhyeok Yu, Greg Yarwood, Bonyoung Koo, Jasper Madalipay, Jung-Hun Woo, and Seogju Cho
Atmos. Chem. Phys., 24, 12575–12593, https://doi.org/10.5194/acp-24-12575-2024, https://doi.org/10.5194/acp-24-12575-2024, 2024
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We incorporated each HONO process into the current CMAQ modeling framework to enhance the accuracy of HONO mixing ratio predictions. These results expand our understanding of HONO photochemistry and identify crucial sources of HONO that impact the total HONO budget in Seoul, South Korea. Through this investigation, we contribute to resolving discrepancies in understanding chemical transport models, with implications for better air quality management and environmental protection in the region.
Alexander Karim Tardito Chaudhri and David S. Stevenson
EGUsphere, https://doi.org/10.5194/egusphere-2024-3247, https://doi.org/10.5194/egusphere-2024-3247, 2024
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There remains a large uncertainty in the global warming potential of atmospheric hydrogen due to poor constraints on its soil deposition, and therefore its lifetime. A new analysis of the latitudinal variation in the observed seasonality of hydrogen is used to constrain its surface fluxes. This is complemented with a simple latitude-height model where surface fluxes are adjusted from a prototype deposition scheme.
Flossie Brown, Gerd Folberth, Stephen Sitch, Paulo Artaxo, Marijn Bauters, Pascal Boeckx, Alexander W. Cheesman, Matteo Detto, Ninong Komala, Luciana Rizzo, Nestor Rojas, Ines dos Santos Vieira, Steven Turnock, Hans Verbeeck, and Alfonso Zambrano
Atmos. Chem. Phys., 24, 12537–12555, https://doi.org/10.5194/acp-24-12537-2024, https://doi.org/10.5194/acp-24-12537-2024, 2024
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Ozone is a pollutant that is detrimental to human and plant health. Ozone monitoring sites in the tropics are limited, so models are often used to understand ozone exposure. We use measurements from the tropics to evaluate ozone from the UK Earth system model, UKESM1. UKESM1 is able to capture the pattern of ozone in the tropics, except in southeast Asia, although it systematically overestimates it at all sites. This work highlights that UKESM1 can capture seasonal and hourly variability.
Namrata Shanmukh Panji, Deborah F. McGlynn, Laura E. R. Barry, Todd M. Scanlon, Manuel T. Lerdau, Sally E. Pusede, and Gabriel Isaacman-VanWertz
Atmos. Chem. Phys., 24, 12495–12507, https://doi.org/10.5194/acp-24-12495-2024, https://doi.org/10.5194/acp-24-12495-2024, 2024
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Climate change will bring about changes in parameters that are currently used in global-scale models to calculate biogenic emissions. This study seeks to understand the factors driving these models by comparing long-term datasets of biogenic compounds to modeled emissions. We note that the light-dependent fractions currently used in models do not accurately represent regional observations. We provide evidence for the time-dependent variation in this parameter for future modifications to models.
Martin Vojta, Andreas Plach, Saurabh Annadate, Sunyoung Park, Gawon Lee, Pallav Purohit, Florian Lindl, Xin Lan, Jens Mühle, Rona L. Thompson, and Andreas Stohl
Atmos. Chem. Phys., 24, 12465–12493, https://doi.org/10.5194/acp-24-12465-2024, https://doi.org/10.5194/acp-24-12465-2024, 2024
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We constrain the global emissions of the very potent greenhouse gas sulfur hexafluoride (SF6) between 2005 and 2021. We show that SF6 emissions are decreasing in the USA and in the EU, while they are substantially growing in China, leading overall to an increasing global emission trend. The national reports for the USA, EU, and China all underestimated their SF6 emissions. However, stringent mitigation measures can successfully reduce SF6 emissions, as can be seen in the EU emission trend.
Cited articles
Anglada, J. M. and Solé, A.: Tropospheric oxidation of methyl
hydrotrioxide (CH3OOOH) by hydroxyl radical, Phys. Chem. Chem. Phys.,
20, 27406–27417, 2018.
Archibald, A. T., Petit, A. S., Percival, C. J., Harvey, J. N., and
Shallcross, D. E.: On the importance of the reaction between OH and RO2
radicals, Atmos. Sci. Let., 10, 102–108, 2009.
Arey, J., Aschmann, S. M., Kwok, E. S. C., and Atkinson, R.: Alkyl nitrate,
hydroxyalkyl nitrate, and hydroxycarbonyl formation from the NOx–air
photooxidations of C5–C8 n-alkanes, J. Phys. Chem. A, 105,
1020–1027, https://doi.org/10.1021/jp003292z, 2001.
Aschmann, S. M., Tuazon, E. C., Arey, J., and Atkinson, R.: Products and
mechanisms of the gas-phase reactions of OH radicals with 1-octene and
7-tetradecene in the presence of NO, Environ. Sci. Technol., 44, 3825–3831,
2010.
Assaf, E., Song, B., Tomas, A., Schoemaecker, C., and Fittschen, C.: Rate
constant of the reaction between CH3O2 radicals and OH radicals
revisited, J. Phys. Chem. A, 120, 8923–8932, 2016.
Assaf, E., Sheps, L., Whalley, L., Heard, D., Tomas, A., Schoemaecker, C.,
and Fittschen, C.: The reaction between CH3O2 and OH radicals:
product yields and atmospheric implications, Environ. Sci. Technol., 51, 2170–2177,
2017a.
Assaf, E., Tanaka, S., Kajii, Y., Schoemaecker, C., and Fittschen, C.: Rate
constants of the reaction of C2–C4 peroxy radicals with OH
radicals, Chem. Phys. Lett., 684, 245–249, 2017b.
Assaf, E., Schoemaecker, C., Vereecken, L., and Fittschen, C.: Experimental
and theoretical investigation of the reaction of RO2 radicals with OH
radicals: Dependence of the HO2 yield on the size of the alkyl group,
Int. J. Chem. Kinet., 50, 670–680, 2018.
Aumont, B., Szopa, S., and Madronich, S.: Modelling the evolution of organic carbon during its gas-phase tropospheric oxidation: development of an explicit model based on a self generating approach, Atmos. Chem. Phys., 5, 2497–2517, https://doi.org/10.5194/acp-5-2497-2005, 2005.
Berndt, T., Richters, S., Kaethner, R., Voigtländer, J., Stratmann, F.,
Sipilä, M., Kulmala, M. and Herrmann, H.: Gas-phase ozonolysis of
cycloalkenes: formation of highly oxidized RO2 radicals and their
reactions with NO, NO2, SO2, and other RO2 radicals, J. Phys.
Chem. A, 119, 10336–10348, 2015.
Berndt, T., Scholz, W., Mentler, B., Fischer, L., Herrmann, H., Kulmala, M.,
and Hansel, A.: Accretion product formation from self- and cross-reactions
of RO2 radicals in the atmosphere, Angew. Chem. Int. Edit., 57, 3820–3824, 2018a.
Berndt, T., Mentler, B., Scholz, W., Fischer, L., Herrmann, H., Kulmala, M.
and Hansel, A.: Accretion product formation from ozonolysis and OH radical
reaction of α-pinene: mechanistic insight and the influence of
isoprene and ethylene, Environ. Sci. Technol., 52, 11069–11077, 2018b.
Bian, H., Zhang, S. and Zhang, H.: Theoretical study on the atmospheric
reaction of CH3O2 with OH, Int. J. Quantum. Chem., 115, 1181–1186,
2015.
Bianchi, F., Kurtén, T., Riva, M., Mohr, C., Rissanen, M. P., Roldin,
P., Berndt, T., Crounse, J. D., Wennberg, P. O., Mentel, T. F., Wildt, J.,
Junninen, H., Jokinen, T., Kulmala, M., Worsnop, D. R., Thornton, J. A.,
Donahue, N., Kjaergaard, H. G., and Ehn, M.: Highly oxygenated organic
molecules (HOM) from gas-phase autoxidation involving peroxy radicals: A key
contributor to atmospheric aerosol, Chem. Rev., 119, 3472–3509, 2019.
Birdsall, A. W. and Elrod, M. J.: Comprehensive NO-dependent study of the
products of the oxidation of atmospherically relevant aromatic compounds, J.
Phys. Chem. A, 115, 5397–5407, 2011.
Birdsall, A. W., Andreoni, J. F., and Elrod, M. J.: Investigation of the role
of bicyclic peroxy radicals in the oxidation mechanism of toluene, J. Phys.
Chem. A, 114, 10655–10663, 2010.
Bey, I., Aumont, B., and Toupance, G.: A modeling study of the nighttime
radical chemistry in the lower continental troposphere: 1 – Development of a
detailed chemical mechanism including nighttime chemistry, J. Geophys. Res.,
106, 9959–9990, 2001a.
Bey, I., Aumont, B. and Toupance, G.: A modeling study of the nighttime
radical chemistry in the lower continental troposphere: 2 – Origin and
evolution of HOx”, J. Geophys. Res., 106, 9990–10001, 2001b.
Biggs, P., Canosa-Mas, C., Fracheboud, J. M., Shallcross, D. E., and Wayne,
R. P.: Rate constants for the reactions of C2H5, C2H5O
and C2H5O2 radicals with NO3 at 298 K and 2.2 Torr, J.
Chem. Soc. Faraday T., 91, 817–825, 1995.
Bossolasco, A. G., Malanca, F. E., and Argüello, G. A.: Peroxy
ethoxyformyl nitrate, CH3CH2OC(O)OONO2. Spectroscopic and
thermal characterization, J. Photochem. Photobio. A, 221,
58–63, 2011.
Boyd, A. A. and Lesclaux, R.: The temperature dependence of the rate
coefficients for β-hydroxyperoxy radical self reactions, Int. J.
Chem. Kinet., 29, 323–331, 1997.
Boyd, A. A., Noziere, B., and Lesclaux, R.: Kinetic studies of the
allylperoxyl radical self-reaction and reaction with HO2, Chem. Soc. Faraday T., 92, 201–206, 1996a.
Boyd, A. A., Lesclaux, R., Jenkin, M. E., and Wallington, T. J.: A
spectroscopic, kinetic, and product study of the
(CH3)2C(OH)CH2O2 radical self reaction and reaction with
HO2, J. Phys. Chem., 100, 6594–6603, 1996b.
Boyd, A. A., Villenave, E., and Lesclaux, R.: Structure-reactivity
relationships for the self-reactions of linear secondary alkylperoxy
radicals: an experimental investigation, Int. J. Chem. Kinet., 31, 37–46,
1999.
Boyd, A. A., Flaud, P.-M., Daugey, N., and Lesclaux, R.: Rate constants for
RO2+HO2 reactions measured under a large excess of HO2,
J. Phys. Chem. A, 107, 818–821, 2003a.
Boyd, A. A., Villenave, E., and Lesclaux, R.: Self- and cross-reactions of
β-hydroxyperoxy radicals of relevance to tropospheric monoterpene
oxidation: structure-activity relationships for rate coefficients, Atmos.
Environ., 37, 2751–2760, 2003b.
Bridier, I., Veyret, B., Lesclaux, R., and Jenkin, M. E.: Flash-photolysis
study of the uv spectrum and kinetics of reactions of the acetonylperoxy
radical, J. Chem. Soc. Faraday T., 89, 2993–2997, 1993.
Calvert, J. G., Orlando, J. J., Stockwell, W. R., and Wallington, T. J.: The
mechanisms of reactions influencing atmospheric ozone, Oxford University
Press, Oxford, ISBN 978-0-19-023301-0, 2015.
Canosa-Mas, C. E., King, M. D., Lopez, R., Percival, C. J., Wayne, R. P.,
Shallcross, D. E., Pyle, J. A., and Daele, V.: Is the reaction between
CH3C(O)O2 and NO3 important in the night-time troposphere?, J.
Chem. Soc. Faraday T., 92, 2211–2222, 1996.
Caralp, F., Forst, W., and Rayez, M. T.: Chemical activation in OH
radical-oxidation of 1-n-alkenes, Phys. Chem. Chem. Phys., 5, 476–486,
2003.
Caravan, R. L., Khan, M. A. H., Zádor, J., Sheps, L., Antonov, I. O.,
Rotavera, B., Ramasesha, K., Kendrew, A., Chen, M., Rösch, D., Osborn,
D. L., Fittschen, C., Schoemaecker, C., Duncianu, M., Grira, A., Dusanter,
S., Tomas, A., Percival, C., Shallcross, D. E., and Taatjes, C. A.: The
reaction of hydroxyl and methylperoxy radicals is not a major source of
atmospheric methanol, Nat. Commun., 9, 4343,
https://doi.org/10.1038/s41467-018-06716-x, 2018.
Carslaw, N., Carpenter, L. J., Plane, J. M. C., Allan, B. J., Burgess, R.
A., Clemitshaw, K. C., Coe, H., and Penkett, S. A.: Simultaneous
measurements of nitrate and peroxy radicals in the marine boundary layer, J.
Geophys. Res., 102, 18917–18933, 1997.
Carter, W. P. L. and Atkinson, R.: Alkyl nitrate formation from the
atmospheric photoxidation of alkanes; a revised estimation method, J. Atmos.
Chem., 8, 165–173, 1989.
Cassanelli, P., Fox, D. J., and Cox, R. A.: Temperature dependence of pentyl
nitrate formation from the reaction of pentyl peroxy radicals with NO, Phys.
Chem. Chem. Phys., 9, 4332–4337, 2007.
Cavalli, F., Barnes, I., and Becker, K.-H.: FT-IR kinetic and product study
of the OH radical and Cl-atom–initiated oxidation of dibasic esters, Int.
J. Chem. Kinet., 33, 431–439, 2001.
Christensen, L. K., Ball, J. C., and Wallington, T. J.: Atmospheric
oxidation mechanism of methyl acetate, J. Phys. Chem. A, 104, 345–351, 2000.
Crounse, J. D., Paulot, F., Kjaergaard, H. G., and Wennberg, P. O.: Peroxy
radical isomerization in the oxidation of isoprene, Phys. Chem. Chem. Phys.,
13, 13607–13613, 2011.
Crounse, J. D., Knap, H. C., Ørnsø, K. B., Jørgensen, S., Paulot,
F., Kjaergaard, H. G., and Wennberg, P. O.: Atmospheric fate of
methacrolein. 1. Peroxy radical isomerization following addition of OH and
O2, J. Phys. Chem. A, 116, 5756–5762, 2012.
Crounse, J. D., Nielsen, L. B., Jørgensen, S., Kjaergaard, H. G., and
Wennberg, P. O.: Autoxidation of organic compounds in the atmosphere, J.
Phys. Chem. Lett., 4, 3513–3520, 2013.
Crounse, J. D., Teng, A., and Wennberg, P. O.: Experimental constraints on
the distribution and fate of peroxy radicals formed in reactions of isoprene
+ OH + O2, presented at Atmospheric Chemical Mechanisms: Simple
Models – Real World Complexities, University of California, Davis, USA,
10–12 December 2014.
Da Silva, G., Graham, C., and Wang, Z.-F.: Unimolecular β-hydroxyperoxy radical decomposition with OH recycling in the
photochemical oxidation of isoprene, Environ. Sci. Technol., 44, 250–256,
2010.
De Gouw, J. A. and Howard, C. J.: Direct measurement of the rate coefficient
for the CH2C(CH3)C(O)O2 + NO reaction using chemical
ionization mass spectrometry, J. Phys. Chem. A, 101, 8662–8667, 1997.
Dillon, T. J. and Crowley, J. N.: Direct detection of OH formation in the reactions of HO2 with CH3C(O)O2 and other substituted peroxy radicals, Atmos. Chem. Phys., 8, 4877–4889, https://doi.org/10.5194/acp-8-4877-2008, 2008.
Doussin, J. F., Picquet-Varrault, B., Durand-Jolibois, R., Loirat, H. and
Carlier, P.: A visible and FTIR spectrometric study of the nighttime
chemistry of acetaldehyde and PAN under simulated atmospheric conditions, J.
Photochem. Photobio. A, 157, 283–293, 2003.
Eberhard, J. and Howard, C. J.: Temperature-dependent kinetics studies of
the reactions of C2H5O2 and n-C3H7O2 radicals
with NO, Int. J. Chem. Kinet., 28, 731–740, 1996.
Eberhard, J. and Howard, C. J.: Rate coefficients for the reactions of some
C3 to C5 hydrocarbon peroxy radicals with NO, J. Phys. Chem. A,
101, 3360–3366, 1997.
Eberhard, J., Villalta, P. W., and Howard, C. J.: Reaction of isopropyl
peroxy radicals with NO over the temperature range 201–401 K, J. Phys.
Chem., 100, 993–997, 1996.
Ehn, M., Thornton, J. A., Kleist, E., Sipilä, M., Junninen, H.,
Pullinen, I., Springer, M., Rubach, F., Tillmann, R., Lee, B.,
Lopez-Hilfiker, F., Andres, S., Acir, I.-H., Rissanen, M., Jokinen, T.,
Schobesberger, S., Kangasluoma, J., Kontkanen, J., Nieminen, T., Kurtén,
T., Nielsen, L. B., Jørgensen, S., Kjaergaard, H. G., Canagaratna, M.,
Maso, M. D., Berndt, T., Petäjä, T., Wahner, A., Kerminen, V.-M.,
Kulmala, M., Worsnop, D. R., Wildt, J., and Mentel, T. F.: A large source of
low-volatility secondary organic aerosol, Nature, 506, 476–479,
https://doi.org/10.1038/nature13032, 2014.
Ehn, M., Berndt, T., Wildt, J., and Mentel, T.: Highly oxygenated molecules
from atmospheric autoxidation of hydrocarbons: a prominent challenge for
chemical kinetics studies, Int. J. Chem. Kinet., 49, 821–831, 2017.
Elrod, M. J.: Kinetics study of the aromatic bicyclic peroxy radical + NO
Reaction: overall rate constant and nitrate product yield measurements, J.
Phys. Chem. A, 115, 8125–8130, 2011.
Faragó, E. P., Schoemaecker, C., Viskolcz, B., and Fittschen, C.:
Experimental determination of the rate constant of the reaction between
C2H5O2 and OH radicals, Chem. Phys. Lett., 619, 196–200,
2015.
Geyer, A., Bächmann, K., Hofzumahaus, A., Holland, F., Konrad, S.,
Klüpfel, T., Pätz, H.W., Perner, D., Mihelcic, D., Schäfer, H.
J., Volz-Thomas, A., and Platt, U.: Nighttime formation of peroxy and
hydroxyl radicals during the BERLIOZ campaign: Observations and modeling
studies, J. Geophys. Res., 108, 8249, https://doi.org/10.1029/2001JD000656, 2003.
Glover, B. G. and Miller, T. J.: Near-IR cavity ringdown spectroscopy and
kinetics of the isomers and conformers of the butyl peroxy radical, J. Phys.
Chem. A, 109, 11191–11197, 2005.
Glowacki, D. R., Wang, L., and Pilling, M. J.: Evidence of formation of
bicyclic species in the early stages of atmospheric benzene oxidation, J.
Phys. Chem. A, 113, 5385–5396, 2009.
Groß, C. B. M., Dillon, T. J., Schuster, G., Lelieveld, J., and Crowley,
J. N.: Direct kinetic study of OH and O3 formation in the reaction of
CH3C(O)O2 with HO2, J. Phys. Chem. A, 118, 974–985,
https://doi.org/10.1021/jp412380z, 2014.
Hansen, J. C., Li, Y., Rosado-Reyes, C. M., Francisco, J. S., Szente, F. J.,
and Maricq, M. M.: Theoretical and experimental investigation of the UV
cross section and kinetics of the methyl formate peroxy radical, J. Phys.
Chem. A, 107, 5306–5316, 2003.
Hasson, A. S., Tyndall, G. S., and Orlando, J. J.: A product yield study of
the reaction of HO2 Radicals with ethyl peroxy
(CH3CH2O2), acetyl peroxy (CH3C(O)O2), and acetonyl
peroxy (CH3C(O)CH2O2) radicals, J. Phys. Chem. A, 108,
5979–5989, 2004.
Hasson, A. S., Tyndall, G. S., Orlando, J. J., Singh, S., Hernandez, S. Q.,
Campbell, S., and Ibarra, Y.: Branching ratios for the reaction of selected
carbonyl-containing peroxy radicals with hydroperoxy radicals, J. Phys.
Chem., 116, 6264–6281, 2012.
Hermans, I., Muller, J. F., Nguyen, T. L., Jacobs, P. A., and Peeters, J.:
Kinetics of α-hydroxy-alkylperoxyl radicals in oxidation processes.
HO2-initiated oxidation of ketones/aldehydes near the tropopause, J.
Phys. Chem. A, 109, 4303–4311, 2005.
Horie, O. and Moortgat, G. K.: Reactions of CH3C(O)O2 radicals
with CH3O2 and HO2 between 263 K and 333 K, J. Chem. Soc.
Faraday T., 88, 3305–3312, 1992.
Hsin, H. Y. and Elrod, M. J.: Overall rate constant measurements of the
reaction of hydroxy- and chloroalkylperoxyradicals derived from methacrolein
and methyl vinyl ketone with nitric oxide, J. Phys. Chem. A, 111, 613–619,
2007.
Hui, A. O., Fradet, M., Okumura, M., and Sander, S. P.: Temperature
dependence study of the kinetics and product yields of the HO2 +
CH3C(O)O2 reaction by direct detection of OH and HO2 radicals
using 2f-IR wavelength modulation spectroscopy, J. Phys. Chem. A, 123,
3655–3671, https://doi.org/10.1021/acs.jpca.9b00442, 2019.
Jagiella, S. and Zabel, F.: Reaction of phenylperoxy radicals with NO2
at 298 K, Phys. Chem. Chem. Phys., 9, 5036–5051, 2007.
Jagiella, S. and Zabel, F.: Thermal stability of carbonyl radicals. Part II.
Reactions of methylglyoxyl and methylglyoxylperoxy radicals at 1 bar in the
temperature range 275–311 K, Phys. Chem. Chem. Phys., 10, 1799–1808, 2008.
Jenkin, M. E. and Clemitshaw, K. C.: Ozone and other secondary photochemical
pollutants: chemical processes governing their formation in the planetary
boundary layer, Atmos. Environ., 34, 2499–2527, 2000.
Jenkin, M. E. and Hayman, G. D.: Kinetics of reactions of primary, secondary
and tertiary β-hydroxy peroxyl radicals: application to isoprene
degradation, J. Chem. Soc. Faraday T., 91, 433–446, 1995.
Jenkin, M. E., Hayman, G. D., Wallington, T. J., Hurley, M. D., Ball., J.
C., Nielsen, O. J., and Ellerman, T.: Kinetic and mechanistic study of the
self reaction of CH3OCH2O2 radicals at room temperature, J.
Phys. Chem, 97, 11712–11723, 1993a.
Jenkin, M. E., Murrells, T. P., Shalliker, S. J., and Hayman, G. D.:
Kinetics and product study of the self-reactions of allyl and allyl peroxy
radicals at 296 K, J. Chem. Soc. Faraday T., 89, 433–446, 1993b.
Jenkin, M. E., Saunders, S. M., and Pilling M. J.: The tropospheric
degradation of volatile organic compounds: a protocol for mechanism
development, Atmos. Environ., 31, 81–104, 1997.
Jenkin, M. E., Boyd, A. A., and Lesclaux, R.: Peroxy radical kinetics
resulting from the OH-initiated oxidation of 1,3-butadiene,
2,3-dimethyl-1,3-butadiene and isoprene, J. Atmos. Chem., 29, 267–298,
1998.
Jenkin, M. E., Sulbaek Andersen, M. P., Hurley, M. D., Wallington, T. J.,
Taketani, F., and Matsumi, Y.: A kinetics and mechanistic study of the OH
and NO2 initiated oxidation of cyclohexa-1,3-diene in the gas phase,
Phys. Chem. Chem. Phys., 7, 1194–1204, 2005.
Jenkin, M. E., Hurley, M. D., and Wallington, T. J.: Investigation of the
radical product channel of the CH3C(O)O2 + HO2 reaction in
the gas phase, Phys. Chem. Chem. Phys., 9, 3149–3162, 2007.
Jenkin, M. E., Hurley, M. D., and Wallington, T. J.: Investigation of the
radical product channel of the CH3C(O)CH2O2 + HO2
reaction in the gas phase, Phys. Chem. Chem. Phys., 10, 4274–4280, 2008.
Jenkin, M. E., Hurley, M. D., and Wallington, T. J.: Investigation of the
radical product channel of the CH3OCH2O2 + HO2
reaction in the gas phase, J. Phys. Chem., 114, 408–416, 2010.
Jenkin, M. E., Young, J. C., and Rickard, A. R.: The MCM v3.3.1 degradation scheme for isoprene, Atmos. Chem. Phys., 15, 11433–11459, https://doi.org/10.5194/acp-15-11433-2015, 2015.
Jenkin, M. E., Valorso, R., Aumont, B., Rickard, A. R., and Wallington, T. J.: Estimation of rate coefficients and branching ratios for gas-phase reactions of OH with aliphatic organic compounds for use in automated mechanism construction, Atmos. Chem. Phys., 18, 9297–9328, https://doi.org/10.5194/acp-18-9297-2018, 2018a.
Jenkin, M. E., Valorso, R., Aumont, B., Rickard, A. R., and Wallington, T. J.: Estimation of rate coefficients and branching ratios for gas-phase reactions of OH with aromatic organic compounds for use in automated mechanism construction, Atmos. Chem. Phys., 18, 9329–9349, https://doi.org/10.5194/acp-18-9329-2018, 2018b.
Jokinen, T., Sipilä, M., Richters, S., Kerminen, V.-M., Paasonen, P.,
Stratmann, F., Worsnop, D., Kulmala, M., Ehn, M., Herrmann, H. and Berndt,
T.: Rapid autoxidation forms highly oxidized RO2 radicals in the
atmosphere, Angew. Chem. Int. Ed., 53, 14596–14600,
https://doi.org/10.1002/anie.201408566, 2014.
Jørgensen, S., Knap, H. C., Otkjær, R. V., Jensen, A. M., Kjeldsen,
M. L. H., Wennberg, P. O., and Kjaergaard, H. G.: Rapid hydrogen shift
scrambling in hydroperoxy-substituted organic peroxy radicals, J. Phys.
Chem. A, 120, 266–275, https://doi.org/10.1021/acs.jpca.5b06768, 2016.
Kabir, M., Jagiella, S., and Zabel, F: Thermal stability of n-acyl
peroxynitrates, Int. J. Chem. Kinet., 46, 462–469, 2014.
Kalalian, C., Roth, E., and Chakir, A.: Atmospheric reactivity of nitrate
radicals: reaction with peroxy radicals, Atmos. Environ., 190, 308–316,
2018.
Kirchner, K., Mayer-Figge, A., Zabel, F., and Becker, K.-H.: Thermal
stability of peroxynitrates, Int. J. Chem. Kinet., 31, 127–144, 1999.
Kukui, A. S., Jungkamp, T. P. W., and Schindler, R. N.: Aldehyde formation
in the reaction of methoxy radicals with NO3, Ber. Bunsen. Phys.
Chem., 99, 1565–1567, 1995.
Laversin, H., Cousin, J., Joly, L., Roth, E., Durry, G., and Chakir, A.:
Kinetic study of the reaction of nitrate radicals with ethylperoxyradicals
between 277 and 358 K, Chem. Phys. Lett., 644, 14–19, 2016.
Le Crâne, J. P. and Lesclaux, R.: UV absorption spectra and
self-reaction rate constants for primary peroxy radicals arising from the
chlorine-initiated oxidation of carbonyl compounds, Int. J. Chem. Kinet.,
38, 276–283, 2006.
Le Crâne, J. P., Villenave, E., Hurley, M. D., Wallington, T. J.,
Nishida, S., Takahashi, K., and Matsumi, Y.: Atmospheric chemistry of
pivalaldehyde and isobutyraldehyde: kinetics and mechanisms of reactions
with Cl atoms, fate of (CH3)3CC(O) and (CH3)2CHC(O)
radicals, and self-reaction kinetics of (CH3)3CC(O)O2 and
(CH3)2CHC(O)O2 radicals, J. Phys. Chem. A, 108, 795–805,
2004.
Lee, L., Teng, A. P., Wennberg, P. O., Crounse, J. D., and Cohen, R. C.: On
rates and mechanisms of OH and O3 reactions with isoprene-derived
hydroxy nitrates, J. Phys. Chem. A, 118, 1622–1637, 2014.
Lightfoot, P. D., Cox, R. A., Crowley, J. N., Destriau, M., Hayman, G. D.,
Jenkin, M. E., Moortgat, G. K., and Zabel, F.: Organic peroxy radicals:
kinetics, spectroscopy and tropospheric chemistry, Atmos. Environ., 26A,
1805–1964, 1992.
Liu, Y. J., Herdlinger-Blatt, I., McKinney, K. A., and Martin, S. T.: Production of methyl vinyl ketone and methacrolein via the hydroperoxyl pathway of isoprene oxidation, Atmos. Chem. Phys., 13, 5715–5730, https://doi.org/10.5194/acp-13-5715-2013, 2013.
Madronich, S. and Calvert, J. G.: Permutation reactions of organic peroxy
radicals in the troposphere, J. Geophys. Res., 95, 5697–5715, 1990.
Matsunaga, A. and Ziemann, P. J.: Yields of beta-hydroxynitrates and
dihydroxynitrates in aerosol formed from OH radical initiated reactions of
linear alkenes in the presence of NOx, J. Phys. Chem. A, 113, 599–606,
https://doi.org/10.1021/jp807764d, 2009.
Matsunaga, A. and Ziemann, P. J.: Yields of beta-hydroxynitrates,
dihydroxynitrates, and trihydroxynitrates formed from OH radical-initiated
reactions of 2-methyl-1-alkenes, P. Natl. Acad. Sci. USA, 107, 6664–6669,
https://doi.org/10.1073/pnas.0910585107, 2010.
McFiggans, G., Mentel, T. F., Wildt, J., Pullinen, I., Kang, S., Kleist, E.,
Schmitt, S., Springer, M., Tillmann, R., Wu, C., Zhao, D., Hallquist, M.,
Faxon, C., Le Breton, M., Hallquist, Å. M., Simpson, D., Bergström,
R., Jenkin, M. E., Ehn, M., Thornton, J. A., Alfarra, M. R., Bannan, T. J.,
Percival, C. J., Priestley, M., Topping, D., and Kiendler-Scharr, A.:
Secondary organic aerosol reduced by mixture of atmospheric vapours, Nature,
565, 587–593, 2019.
McKee, K., Blitz, M. A., and Pilling, M. J.: Temperature and pressure studies
of the reactions of CH3O2, HO2 and 1,2-C4H9O2
with NO2, J. Phys. Chem. A, 120, 1408–1420, 2016.
Mentel, T. F., Springer, M., Ehn, M., Kleist, E., Pullinen, I., Kurtén,
T., Rissanen, M., Wahner, A., and Wildt, J.: Formation of highly oxidized
multifunctional compounds: autoxidation of peroxy radicals formed in the
ozonolysis of alkenes – deduced from structure-product relationships, Atmos.
Chem. Phys., 15, 6745-6765, https://doi.org/10.5194/acp-15-6745-2015, 2015.
Miller, A. M., Yeung, L. Y., Kiep, A. C., and Elrod, M. J.: Overall rate
constant measurements of the reactions of alkene-derived hydroxyalkylperoxy
radicals with nitric oxide, Phys. Chem. Chem. Phys., 6, 3402–3407, 2004.
Mohammed, S. Y., Davis, A. A., Al Rashidi, M. J., and Sarathy, S. M.:
High-pressure limit rate rules for α-H isomerization of
hydroperoxyalkylperoxy radicals, J. Phys. Chem. A., 122, 3626–3639,
https://doi.org/10.1021/acs.jpca.7b11955, 2018.
Møller, K. H., Bates, K. H., and Kjaergaard, H. G.: The importance of
peroxy radical hydrogen-shift reactions in atmospheric isoprene oxidation,
J. Phys. Chem. A., 123, 920–932, https://doi.org/10.1021/acs.jpca.8b10432, 2019.
Müller, J. F., Liu, Z., Nguyen, V. S., Stavrakou, T., Harvey, J. N., and
Peeters, J.: The reaction of methyl peroxy and hydroxyl radicals as a major
source of atmospheric methanol, Nat. Commun., 7, 13213, https://doi.org/10.1038/ncomms13213, 2016.
Navarro, N. A., Dusanter, S., and Stevens, P. S.: Temperature dependence of
the yields of methacrolein and methyl vinyl ketone from the OH-initiated
oxidation of isoprene under NOx-free conditions, Atmos. Environ., 79, 59–66,
2013.
Ng, N. L., Kwan, A. J., Surratt, J. D., Chan, A. W. H., Chhabra, P. S., Sorooshian, A., Pye, H. O. T., Crounse, J. D., Wennberg, P. O., Flagan, R. C., and Seinfeld, J. H.: Secondary organic aerosol (SOA) formation from reaction of isoprene with nitrate radicals (NO3), Atmos. Chem. Phys., 8, 4117–4140, https://doi.org/10.5194/acp-8-4117-2008, 2008.
Nguyen, T. L., Vereecken, L., and Peeters, J.: Theoretical study of the
HOCH2OO+ HO2 reaction: detailed molecular mechanisms of the
three reaction channels, Z. Phys. Chem., 224, 1081–1093, 2010.
Niki, H., Maker, P. D., Savage, C. M., and Breitenbach, L. P.: FTIR study of
the kinetics and mechanism for Cl-atom-initiated reactions of acetaldehyde,
J. Phys. Chem., 89, 588–591, 1985.
Nozière, B. and Hanson, D.: Speciated monitoring of gas-phase organic
peroxy radicals by chemical ionization mass spectrometry: Cross-reactions
between CH3O2, CH3(CO)O2, (CH3)3CO2, and
c-C6H11O2, J. Phys. Chem. A, 121, 8453–8464, 2017.
O'Brien, J. M., Czuba, E., Hastie, D. R., Francisco, J. S., and Shepson, P.
B.: Determination of the hydroxy nitrate yields from the reaction of
C2–C6 alkenes with OH in the presence of NO, J. Phys. Chem. A,
102, 8903–8908, https://doi.org/10.1021/jp982320z, 1998.
Olivella, S., Solé, A., and Bofill, J. M.: Theoretical mechanistic study
of the oxidative degradation of benzene in the troposphere: reaction of
benzene−HO radical adduct with O2, J. Chem. Theory Comput., 5,
1607–1623, 2009.
Orlando, J. J. and Tyndall, G. S: The atmospheric chemistry of the HC(O)CO
radical, Int. J. Chem. Kinet., 33, 149–156, 2001.
Orlando, J. J. and Tyndall, G. S.: Laboratory studies of organic peroxy
radical chemistry: an overview with emphasis on recent issues of atmospheric
significance, Chem. Soc. Rev., 41, 6294–6317, 2012.
Orlando, J. J., Tyndall, G. S., Bilde, M., Ferronato, C., Wallington, T. J.,
Vereecken, L., and Peeters, J.: Laboratory and theoretical study of the oxy
radicals in the OH- and Cl-initiated oxidation of ethene, J. Phys. Chem. A,
102, 8116–8123, 1998.
Orlando, J. J., Tyndall, G. S., Vereecken, L., and Peeters, J.: The
atmospheric chemistry of the acetonoxy radical, J. Phys. Chem. A, 104,
11578–11588, 2000a.
Orlando, J. J., Nozière, B., Tyndall, G. S., and Orzechowska, G. E.:
Paulson, S. E., and Rudich, Y.: Product studies of the OH and
ozone-initiated oxidation of some monoterpenes, J. Geophys. Res., 105,
11561–11572, 2000b.
Orlando, J. J., Tyndall, G. S., and Wallington, T. J.: The atmospheric
chemistry of alkoxy radicals, Chem. Rev., 103, 4657–4689, 2003.
Otkjær, R. V., Jakobsen, H. H., Tram, C. M., and Kjaergaard, H. G.:
Calculated hydrogen shift rate constants in substituted alkyl peroxy
radicals, J. Phys. Chem. A., 122, 8665–8673, https://doi.org/10.1021/acs.jpca.8b06223, 2018.
Paulot, F., Crounse, J. D., Kjaergaard, H. G., Kurten, A., St Clair, J. M.,
Seinfeld, J. H., and Wennberg, P. O.: Unexpected epoxide formation in the
gas-phase photooxidation of isoprene, Science, 325, 730–733,
https://doi.org/10.1126/science.1172910, 2009.
Peeters, J. and Nguyen, T. L: Unusually fast 1,6-H shifts of enolic
hydrogens in peroxy radicals: formation of the first-generation C2 and
C3 carbonyls in the oxidation of isoprene, J. Phys. Chem. A, 116,
6134–6141, 2012.
Peeters, J., Nguyen, T. L., and Vereecken, L.: HOx radical regeneration
in the oxidation of isoprene, Phys. Chem. Chem. Phys., 28, 5935–5939, 2009.
Peeters, J., Müller, J.-F., Stavrakou, T., and Nguyen, V. S.: Hydroxyl
radical recycling in isoprene oxidation driven by hydrogen bonding and
hydrogen tunneling: the upgraded LIM1 mechanism, J. Phys. Chem. A, 118,
8625–8643, 2014.
Perring, A. E., Pusede, S. E., and Cohen, R. C.: An observational perspective
on the atmospheric impacts of alkyl and multifunctional nitrates on ozone
and secondary organic aerosol, Chem. Rev., 113, 5848–5870, 2013.
Picquet-Varrault, B., Doussin, J.-F., Durand-Jolibois, R., and Carlier, P.:
FTIR spectroscopic study of the OH-induced oxidation of two linear acetates: ethyl and n-propyl acetates, Phys. Chem. Chem. Phys., 3, 2595–2606, 2001.
Picquet-Varrault, B., Doussin, J.-F., Durand-Jolibois, R. and Carlier, P.:
FTIR spectroscopic study of the OH-induced oxidation of isopropyl, isobutyl,
and tert-butyl acetates, J. Phys. Chem. A, 106, 2895–2902, 2002.
Pimentel, A. S., Tyndall, G. S., Orlando, J. J., Hurley, M. D., Wallington,
T. J., Sulbaek Andersen, M. P., Marshall, P., and Dibble, T. S.: Atmospheric
chemistry of isopropyl formate and tert-butyl formate, Int. J. Chem. Kinet.,
42, 479–498, 2010.
Praske, E., Crounse, J. D., Bates, K. H., Kurtén, T., Kjaergaard, H. G.,
and Wennberg, P. O.: Atmospheric fate of methyl vinyl ketone: peroxy radical
reactions with NO and HO2, J. Phys. Chem. A, 119, 4562–4572, 2015.
Praske, E., Otkjær, R. V., Crounse, J. D., Hethcox, J. C., Stoltz, B.
M., Kjaergaard, H. G., and Wennberg, P. O.: Atmospheric autoxidation is
increasingly important in urban and suburban North America, P. Natl. Acad. Sci. USA, 115, 64–69, https://doi.org/10.1073/pnas.1715540115, 2017.
Praske, E., Otkjær, R. V., Crounse, J. D., Hethcox, J. C., Stoltz, B.
M., Kjaergaard, H. G., and Wennberg, P. O.: Intramolecular hydrogen shift
chemistry of hydroperoxy-substituted peroxy radicals, J. Phys. Chem. A., 123, 590–600, https://doi.org/10.1021/acs.jpca.8b09745, 2019.
Raoult, S., Rayez, M.-T. , Rayez, J.-C., and Lesclaux, R.: Gas phase
oxidation of benzene: Kinetics, thermochemistry and mechanism of initial
steps, Phys. Chem. Chem. Phys., 6, 2245–2253, 2004.
Ray, A., Daele, V., Vassalli, I., Poulet, G., and LeBras, G.: Kinetic study
of the reactions of C2H5O and C2H5O2 with NO3
at 298 K, J. Phys. Chem., 100, 5737–5744, 1996.
Rickard, A. R., Wyche, K. P., Metzger, A., Monks, P. S., Ellis, A. M.,
Dommen, J., Baltensperger, U., Jenkin, M. E., and Pilling, M. J.: Gas phase
precursors to anthropogenic secondary organic aerosol: using the Master
Chemical Mechanism to probe detailed observations of 1,3,5-trimethylbenzene
photo-oxidation, Atmos. Environ., 44, 5423–5433, 2010.
Rissanen, M. P., Kurtén, T., Sipilä, M., Thornton, J. A., Kausiala,
O., Garmash, O., Kjaergaard, H. G., Petäjä, T., Worsnop, D. R., Ehn,
M., and Kulmala, M.: Effects of chemical complexity on the autoxidation
mechanisms of endocyclic alkene ozonolysis products: from methylcyclohexenes
toward understanding α-pinene, J. Phys. Chem. A, 119,
4633–4650, https://doi.org/10.1021/jp510966g, 2015.
Roberts, J. M. and Bertman, S. B.: Measurement of the thermal decomposition
of peroxyacetic nitric anhydride (PAN) and peroxymethacrylic nitric
anhydride (MPAN), Int. J. Chem. Kinet., 24, 297–307, 1992.
Roth, E., Chakir, A., and Ferhati, A.: Study of a peroxybenzoyl radical in
the gas phase: ultraviolet spectrum and C6H5C(O)O2+
HO2 reaction between 295 and 357 K, J. Phys. Chem. A, 114,
10367–10379, 2010.
Rowley, D. M., Lightfoot, P. D., Lesclaux, R., and Wallington, T. J.: UV
Absorption spectrum and self-reaction of cyclohexylperoxy radicals, J. Chem.
Soc. Faraday T., 87, 3221–3226, 1991.
Rowley, D. M., Lesclaux, R., Lightfoot, P. D., Hughes, K., Rudy, S., Hurley,
M. D., and Wallington, T. J.: A kinetic and mechanistic study of the reaction
of neopentylperoxy radicals with HO2, J. Phys. Chem., 96,
7043–7048, 1992a.
Rowley, D. M., Lesclaux, R., Lightfoot, P. D., Noziere, B., Wallington, T.
J., and Hurley, M. D.: Kinetic and mechanistic studies of the reactions of
cyclopentylperoxy and cyclohexylperoxy radicals with HO2, J. Phys.
Chem., 96, 4889–4894, 1992b.
Rowley, D. M., Lightfoot, P. D., Lesclaux, R., and Wallington, T. J.: Ultraviolet absorption spectrum and self-reaction of
cyclopentylperoxy radicals, J. Chem. Soc. Faraday T., 88, 1369–1376,
1992c.
Saunders, S. M., Jenkin, M. E., Derwent, R. G., and Pilling, M. J.: Protocol for the development of the Master Chemical Mechanism, MCM v3 (Part A): tropospheric degradation of non-aromatic volatile organic compounds, Atmos. Chem. Phys., 3, 161–180, https://doi.org/10.5194/acp-3-161-2003, 2003.
Schwantes, R. H., Teng, A. P., Nguyen, T. B., Coggon, M. M., Crounse, J. D.,
St. Clair, J. M., Zhang, X., Schilling, K. A., Seinfeld, J. H., and
Wennberg, P. O.: Isoprene NO3 oxidation products from the RO2+
HO2 pathway, J. Phys. Chem. A, 119, 10158–10171, 2015.
Sehested, J., Christensen, L. K., Nielsen, O. J., Bilde, M., Wallington, T.
J., Schneider, W. F., Orlando, J. J., and Tyndall, G. S: Atmospheric
chemistry of acetone: kinetic study of the
Teng, A. P., Crounse, J. D., Lee, L., St. Clair, J. M., Cohen, R. C., and Wennberg, P. O.: Hydroxy nitrate production in the OH-initiated oxidation of alkenes, Atmos. Chem. Phys., 15, 4297–4316, https://doi.org/10.5194/acp-15-4297-2015, 2015.
Tomas, A. and Lesclaux, R.: Self-reaction kinetics of the
(CH3)2CHC(O)O2 and (CH3)3CC(O)O2 acylperoxy
radicals between 275 and 363 K, Chem. Phys. Lett., 319, 521–528, 2000.
Tuazon, E. C., Aschmann, S. M., Atkinson, R., and Carter, W. P. L.: The
reactions of selected acetates with the OH radical in the presence of NO:
novel rearrangement of alkoxy radicals of structure RC(O)OCH′R, J.
Phys. Chem. A, 102, 2316–2321, 1998a.
Tuazon, E. C., Aschmann, S. M., and Atkinson, R.: Products of the gas-phase
reactions of the OH radical with 1-methoxy-2-propanol and 2-butoxyethanol,
Environ. Sci. Technol., 32, 3336–3345, 1998b.
Tyndall, G. S., Cox, R. A., Granier, C., Lesclaux, R., Moortgat, G. K.,
Pilling, M. J., Ravishankara, A. R., and Wallington, T. J.: Atmospheric
chemistry of small organic peroxy radicals, J. Geophys. Res., D106, 12157–12182, 2001.
Vaughan, S., Canosa-Mas, C. E., Pfrang, C., Shallcross, D. E., Watson, L.,
and Wayne, R. P.: Kinetic studies of reactions of the nitrate radical
(NO3) with peroxy radicals (RO2): an indirect source of OH at
night?, Phys. Chem. Chem. Phys., 8, 3749–3760, 2006.
Vereecken, L. and Peeters, J.: Theoretical investigation of the role of
intramolecular hydrogen bonding in β-hydroxyethoxy and β-hydroxyethylperoxy radicals in the tropospheric oxidation of ethene, J.
Phys. Chem. A, 103, 1768–1775, 1999.
Vereecken, L. and Peeters, J.: Non-traditional (per)oxy ring-closure paths
in the atmospheric oxidation of isoprene and monoterpenes, J. Phys. Chem. A,
108, 5197–5204, 2004.
Vereecken, L., Peeters, J., Orlando, J. J., Tyndall, G. S., and Ferronato,
C.: Decomposition of β-hydroxypropoxy radicals in the OH-initiated
oxidation of propene. A theoretical and experimental study J. Phys. Chem. A,
103, 4693–4702, 1999.
Vereecken, L., Aumont, B., Barnes, I., Bozzelli, J. W., Goldman, M. J.,
Green, W. H., Madronich, S., McGillen, M. R., Mellouki, A., Orlando, J. J.,
Picquet-Varrault, B., Rickard, A. R., Stockwell, W. R., Wallington, T. J.,
and Carter, W. P. L.: Perspective on mechanism development and
structure-activity relationships for gas-phase atmospheric chemistry, Int.
J. Chem. Kinet., 50, 435–469, 2018.
Villenave, E. and Lesclaux, R.: Kinetics of the cross reactions of
CH3O2 and C2H5O2 radicals with selected peroxy
radicals, J. Phys. Chem., 100, 14372–14382, 1996.
Villenave, E., Lesclaux, R., Seefeld, S., and Stockwell, W. R.: Kinetics
and atmospheric implications of peroxy radical cross reactions involving the
CH3C(O)O2 radical, J. Geophys. Res., 103, 25273–25285, 1998.
Walker, H. M., Stone, D., Ingham, T., Vaughan, S., Cain, M., Jones, R. L., Kennedy, O. J., McLeod, M., Ouyang, B., Pyle, J., Bauguitte, S., Bandy, B., Forster, G., Evans, M. J., Hamilton, J. F., Hopkins, J. R., Lee, J. D., Lewis, A. C., Lidster, R. T., Punjabi, S., Morgan, W. T., and Heard, D. E.: Night-time measurements of HOx during the RONOCO project and analysis of the sources of HO2, Atmos. Chem. Phys., 15, 8179–8200, https://doi.org/10.5194/acp-15-8179-2015, 2015.
Wallington, T. J., Hurley, M. D., Maurer, T., Barnes, I., Becker, K. H.,
Tyndall, G. S., Orlando, J. J., Pimentel, A. S., and Bilde, M.: Atmospheric
oxidation mechanism of methyl formate, J. Phys. Chem. A, 105, 5146–5154,
2001.
Wennberg, P. O., Bates, K. H., Crounse, J. D., Dodson, L. G., McVay, R. C.,
Mertens, L. A., Nguyen, T. B., Praske, E., Schwantes, R. H., Smarte, M. D.,
St Clair, J. M., Teng A. P., Zhang, X., and Seinfeld, J. H.: Gas-phase
reactions of isoprene and its major oxidation products, Chem. Rev., 118,
3337–3390, 2018.
Winiberg, F. A. F., Dillon, T. J., Orr, S. C., Groß, C. B. M., Bejan, I., Brumby, C. A., Evans, M. J., Smith, S. C., Heard, D. E., and Seakins, P. W.: Direct measurements of OH and other product yields from the HO2+CH3C(O)O2 reaction, Atmos. Chem. Phys., 16, 4023–4042, https://doi.org/10.5194/acp-16-4023-2016, 2016.
Xu, L., Møller, K. H., Crounse, J. D., Otkjær, R. V., Kjaergaard, H.
G., and Wennberg, P. O.: Unimolecular reactions of peroxy radicals formed in
the oxidation of α-pinene and β-pinene by hydroxyl radicals,
J. Phys. Chem. A., 123, 1661–1674, https://doi.org/10.1021/acs.jpca.8b11726, 2019.
Yan, C., Kocevska, S., and Krasnoperov, L. N.: Kinetics of the reaction of
CH3O2 radicals with OH studied over the 292–526 K temperature
range, J. Phys. Chem. A, 120, 6111–6121, 2016.
Yeh, G. K. and Ziemann, P. J.: Alkyl nitrate formation from the reactions of
C8-C14 n-alkanes with OH radicals in the presence of NOx:
measured yields with essential corrections for gas-wall partitioning. J.
Phys. Chem. A, 118, 8147–8157, https://doi.org/10.1021/jp500631v, 2014a.
Yeh, G. K. and Ziemann, P. J.: identification and yields of
1,4-hydroxynitrates formed from the reactions of C8-C16
n-alkanes with OH radicals in the presence of NOx, J. Phys. Chem. A, 118,
8797–8806, https://doi.org/10.1021/jp500631v, 2014b.
Zabel, F., Reimer, A., Becker, K. H., and Fink, E. H.: Thermal decomposition
of alkyl peroxynitrates, J. Phys. Chem., 93, 5500–5507, 1989.
Zhang, X., McVay, R., Huang, D. D., Dalleska, N. F., Aumont, B., Flagan,
R. C., and Seinfeld, J. H.: Formation and evolution of molecular products in
alpha-pinene secondary organic aerosol, P. Natl. Acad. Sci. USA, 112,
14168–14173, 2015.
Ziemann, P. J.: Evidence for low-volatility diacyl peroxides as a nucleating
agent and major component of aerosol formed from reactions of O3 with
cyclohexene and homologous compounds, J. Phys. Chem. A, 106, 4390–4402,
https://doi.org/10.1021/jp012925m, 2002.
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Short summary
Organic compounds are emitted in large amounts from natural and human-influenced sources. Peroxy radicals are key intermediates formed during oxidation of organic compounds, and play a central role in mechanisms forming pollutants such as ozone and organic particles. Due to the large number of different peroxy radicals formed, it is impossible to study the rates of all of their reactions, and most have to be estimated. Updated and new estimation methods are reported for use in atmospheric models
Organic compounds are emitted in large amounts from natural and human-influenced sources. Peroxy...
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