Articles | Volume 18, issue 22
https://doi.org/10.5194/acp-18-16293-2018
© Author(s) 2018. 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-18-16293-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Nov 2018
Research article |
| 16 Nov 2018
| 16 Nov 2018
Acid gases and aerosol measurements in the UK (1999–2015): regional distributions and trends
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
Christine F. Braban
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
Ulrike Dragosits
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
Ivan Simmons
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
David Leaver
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
Netty van Dijk
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
Janet Poskitt
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
Sarah Thacker
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
Manisha Patel
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
Heather Carter
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
M. Glória Pereira
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
Patrick O. Keenan
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
Alan Lawlor
CEH, Lancaster Environment Centre, Bailrigg, Lancaster LA1 4AP, UK
Christopher Conolly
Ricardo Energy & Environment, Gemini Building, Fermi Avenue,
Harwell, Oxon, OX11 0QR, UK
Keith Vincent
Ricardo Energy & Environment, Gemini Building, Fermi Avenue,
Harwell, Oxon, OX11 0QR, UK
Mathew R. Heal
School of Chemistry, University of Edinburgh, David Brewster Road,
Edinburgh EH9 3FJ, UK
Mark A. Sutton
CEH, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
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Claire M. Wood, Jamie Alison, Marc S. Botham, Annette Burden, François Edwards, R. Angus Garbutt, Paul B. L. George, Peter A. Henrys, Russel Hobson, Susan Jarvis, Patrick Keenan, Aidan M. Keith, Inma Lebron, Lindsay C. Maskell, Lisa R. Norton, David A. Robinson, Fiona M. Seaton, Peter Scarlett, Gavin M. Siriwardena, James Skates, Simon M. Smart, Bronwen Williams, and Bridget A. Emmett
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Ernesto Reyes-Villegas, Upasana Panda, Eoghan Darbyshire, James M. Cash, Rutambhara Joshi, Ben Langford, Chiara F. Di Marco, Neil J. Mullinger, Mohammed S. Alam, Leigh R. Crilley, Daniel J. Rooney, W. Joe F. Acton, Will Drysdale, Eiko Nemitz, Michael Flynn, Aristeidis Voliotis, Gordon McFiggans, Hugh Coe, James Lee, C. Nicholas Hewitt, Mathew R. Heal, Sachin S. Gunthe, Tuhin K. Mandal, Bhola R. Gurjar, Shivani, Ranu Gadi, Siddhartha Singh, Vijay Soni, and James D. Allan
Atmos. Chem. Phys., 21, 11655–11667, https://doi.org/10.5194/acp-21-11655-2021, https://doi.org/10.5194/acp-21-11655-2021, 2021
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This paper shows the first multisite online measurements of PM1 in Delhi, India, with measurements over different seasons in Old Delhi and New Delhi in 2018. Organic aerosol (OA) source apportionment was performed using positive matrix factorisation (PMF). Traffic was the main primary aerosol source for both OAs and black carbon, seen with PMF and Aethalometer model analysis, indicating that control of primary traffic exhaust emissions would make a significant reduction to Delhi air pollution.
James M. Cash, Ben Langford, Chiara Di Marco, Neil J. Mullinger, James Allan, Ernesto Reyes-Villegas, Ruthambara Joshi, Mathew R. Heal, W. Joe F. Acton, C. Nicholas Hewitt, Pawel K. Misztal, Will Drysdale, Tuhin K. Mandal, Shivani, Ranu Gadi, Bhola Ram Gurjar, and Eiko Nemitz
Atmos. Chem. Phys., 21, 10133–10158, https://doi.org/10.5194/acp-21-10133-2021, https://doi.org/10.5194/acp-21-10133-2021, 2021
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We present the first real-time composition of submicron particulate matter (PM1) in Old Delhi using high-resolution aerosol mass spectrometry. Seasonal analysis shows peak concentrations occur during the post-monsoon, and novel-tracers reveal the largest sources are a combination of local open and regional crop residue burning. Strong links between increased chloride aerosol concentrations and burning sources of PM1 suggest burning sources are responsible for the post-monsoon chloride peak.
Robbie Ramsay, Chiara F. Di Marco, Mathew R. Heal, Matthias Sörgel, Paulo Artaxo, Meinrat O. Andreae, and Eiko Nemitz
Biogeosciences, 18, 2809–2825, https://doi.org/10.5194/bg-18-2809-2021, https://doi.org/10.5194/bg-18-2809-2021, 2021
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The exchange of the gas ammonia between the atmosphere and the surface is an important biogeochemical process, but little is known of this exchange for certain ecosystems, such as the Amazon rainforest. This study took measurements of ammonia exchange over an Amazon rainforest site and subsequently modelled the observed deposition and emission patterns. We observed emissions of ammonia from the rainforest, which can be simulated accurately by using a canopy resistance modelling approach.
Gemma Purser, Julia Drewer, Mathew R. Heal, Robert A. S. Sircus, Lara K. Dunn, and James I. L. Morison
Biogeosciences, 18, 2487–2510, https://doi.org/10.5194/bg-18-2487-2021, https://doi.org/10.5194/bg-18-2487-2021, 2021
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Short-rotation forest plantations could help reduce greenhouse gases but can emit biogenic volatile organic compounds. Emissions were measured at a plantation trial in Scotland. Standardised emissions of isoprene from foliage were higher from hybrid aspen than from Sitka spruce and low from Italian alder. Emissions of total monoterpene were lower. The forest floor was only a small source. Model estimates suggest an SRF expansion of 0.7 Mha could increase total UK emissions between < 1 %–35 %.
Y. Sim Tang, Chris R. Flechard, Ulrich Dämmgen, Sonja Vidic, Vesna Djuricic, Marta Mitosinkova, Hilde T. Uggerud, Maria J. Sanz, Ivan Simmons, Ulrike Dragosits, Eiko Nemitz, Marsailidh Twigg, Netty van Dijk, Yannick Fauvel, Francisco Sanz, Martin Ferm, Cinzia Perrino, Maria Catrambone, David Leaver, Christine F. Braban, J. Neil Cape, Mathew R. Heal, and Mark A. Sutton
Atmos. Chem. Phys., 21, 875–914, https://doi.org/10.5194/acp-21-875-2021, https://doi.org/10.5194/acp-21-875-2021, 2021
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The DELTA® approach provided speciated, monthly data on reactive gases (NH3, HNO3, SO2, HCl) and aerosols (NH4+, NO3−, SO42−, Cl−, Na+) across Europe (2006–2010). Differences in spatial and temporal concentrations and patterns between geographic regions and four ecosystem types were captured. NH3 and NH4NO3 were dominant components, highlighting their growing relative importance in ecosystem impacts (acidification, eutrophication) and human health effects (NH3 as a precursor to PM2.5) in Europe.
Robbie Ramsay, Chiara F. Di Marco, Matthias Sörgel, Mathew R. Heal, Samara Carbone, Paulo Artaxo, Alessandro C. de Araùjo, Marta Sá, Christopher Pöhlker, Jost Lavric, Meinrat O. Andreae, and Eiko Nemitz
Atmos. Chem. Phys., 20, 15551–15584, https://doi.org/10.5194/acp-20-15551-2020, https://doi.org/10.5194/acp-20-15551-2020, 2020
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The Amazon rainforest is a unique
laboratoryto study the processes which govern the exchange of gases and aerosols to and from the atmosphere. This study investigated these processes by measuring the atmospheric concentrations of trace gases and particles at the Amazon Tall Tower Observatory. We found that the long-range transport of pollutants can affect the atmospheric composition above the Amazon rainforest and that the gases ammonia and nitrous acid can be emitted from the rainforest.
Hannah L. Walker, Mathew R. Heal, Christine F. Braban, Mhairi Coyle, Sarah R. Leeson, Ivan Simmons, Matthew R. Jones, Richard Kift, and Marsailidh M. Twigg
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2020-219, https://doi.org/10.5194/amt-2020-219, 2020
Revised manuscript not accepted
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Quantifying local photolysis rates are critical to understanding local air quality. We present the first year of a long-term filter radiometer measurement dataset in the UK (Auchencorth Moss, SE Scotland), and demonstrate the potential application of this data to account for variations in local meteorology (e.g. clouds and aerosols) in atmospheric models, which otherwise increase computational cost. The scientific and policy value of these measurements are also emphasised.
Chris R. Flechard, Andreas Ibrom, Ute M. Skiba, Wim de Vries, Marcel van Oijen, David R. Cameron, Nancy B. Dise, Janne F. J. Korhonen, Nina Buchmann, Arnaud Legout, David Simpson, Maria J. Sanz, Marc Aubinet, Denis Loustau, Leonardo Montagnani, Johan Neirynck, Ivan A. Janssens, Mari Pihlatie, Ralf Kiese, Jan Siemens, André-Jean Francez, Jürgen Augustin, Andrej Varlagin, Janusz Olejnik, Radosław Juszczak, Mika Aurela, Daniel Berveiller, Bogdan H. Chojnicki, Ulrich Dämmgen, Nicolas Delpierre, Vesna Djuricic, Julia Drewer, Eric Dufrêne, Werner Eugster, Yannick Fauvel, David Fowler, Arnoud Frumau, André Granier, Patrick Gross, Yannick Hamon, Carole Helfter, Arjan Hensen, László Horváth, Barbara Kitzler, Bart Kruijt, Werner L. Kutsch, Raquel Lobo-do-Vale, Annalea Lohila, Bernard Longdoz, Michal V. Marek, Giorgio Matteucci, Marta Mitosinkova, Virginie Moreaux, Albrecht Neftel, Jean-Marc Ourcival, Kim Pilegaard, Gabriel Pita, Francisco Sanz, Jan K. Schjoerring, Maria-Teresa Sebastià, Y. Sim Tang, Hilde Uggerud, Marek Urbaniak, Netty van Dijk, Timo Vesala, Sonja Vidic, Caroline Vincke, Tamás Weidinger, Sophie Zechmeister-Boltenstern, Klaus Butterbach-Bahl, Eiko Nemitz, and Mark A. Sutton
Biogeosciences, 17, 1583–1620, https://doi.org/10.5194/bg-17-1583-2020, https://doi.org/10.5194/bg-17-1583-2020, 2020
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Experimental evidence from a network of 40 monitoring sites in Europe suggests that atmospheric nitrogen deposition to forests and other semi-natural vegetation impacts the carbon sequestration rates in ecosystems, as well as the net greenhouse gas balance including other greenhouse gases such as nitrous oxide and methane. Excess nitrogen deposition in polluted areas also leads to other environmental impacts such as nitrogen leaching to groundwater and other pollutant gaseous emissions.
Nicholas Cowan, Peter Levy, Andrea Moring, Ivan Simmons, Colin Bache, Amy Stephens, Joana Marinheiro, Jocelyn Brichet, Ling Song, Amy Pickard, Connie McNeill, Roseanne McDonald, Juliette Maire, Benjamin Loubet, Polina Voylokov, Mark Sutton, and Ute Skiba
Biogeosciences, 16, 4731–4745, https://doi.org/10.5194/bg-16-4731-2019, https://doi.org/10.5194/bg-16-4731-2019, 2019
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Commonly used nitrogen fertilisers, ammonium nitrate, urea and urea coated with a urease inhibitor, were applied to experimental plots. Fertilisation with ammonium nitrate supported the largest yields but also resulted in the largest nitrous oxide emissions. Urea was the largest emitter of ammonia. The coated urea did not significantly increase yields; however, ammonia emissions were substantially smaller than urea. The coated urea was the best environmentally but is economically unattractive.
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.
Ksenia Aleksankina, Stefan Reis, Massimo Vieno, and Mathew R. Heal
Atmos. Chem. Phys., 19, 2881–2898, https://doi.org/10.5194/acp-19-2881-2019, https://doi.org/10.5194/acp-19-2881-2019, 2019
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Atmospheric chemistry transport models are widely used to underpin policies to mitigate the detrimental effects of air pollution on human health and ecosystems. Understanding the level of confidence in model predictions is thus vital. We present a comprehensive approach for uncertainty assessment and global variance-based sensitivity analysis to propagate uncertainty from model input data and identify the extent to which uncertainty in different emissions drives the model output uncertainty.
Robbie Ramsay, Chiara F. Di Marco, Mathew R. Heal, Marsailidh M. Twigg, Nicholas Cowan, Matthew R. Jones, Sarah R. Leeson, William J. Bloss, Louisa J. Kramer, Leigh Crilley, Matthias Sörgel, Meinrat Andreae, and Eiko Nemitz
Atmos. Chem. Phys., 18, 16953–16978, https://doi.org/10.5194/acp-18-16953-2018, https://doi.org/10.5194/acp-18-16953-2018, 2018
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Understanding the impact of agricultural activities on the atmosphere requires more measurements of inorganic trace gases and associated aerosol counterparts. This research presents 1 month of measurements above agricultural grassland during a period of fertiliser application. It was found that emissions of the important trace gases ammonia and nitrous acid peaked after fertiliser use and that the velocity at which the measured aerosols were deposited was dependent upon their size.
Ksenia Aleksankina, Mathew R. Heal, Anthony J. Dore, Marcel Van Oijen, and Stefan Reis
Geosci. Model Dev., 11, 1653–1664, https://doi.org/10.5194/gmd-11-1653-2018, https://doi.org/10.5194/gmd-11-1653-2018, 2018
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Atmospheric chemistry transport models are widely used to underpin policy decisions. We present a global sensitivity and uncertainty analysis approach to understand how uncertainty in input emissions of SO2, NOx, and NH3 drives uncertainties in model outputs, using the FRAME model as an example. We interpret results for input emissions uncertainty ranges reported by the national emissions inventory. Variance-based measures of sensitivity were used to apportion model output uncertainty.
Riinu Ots, Mathew R. Heal, Dominique E. Young, Leah R. Williams, James D. Allan, Eiko Nemitz, Chiara Di Marco, Anais Detournay, Lu Xu, Nga L. Ng, Hugh Coe, Scott C. Herndon, Ian A. Mackenzie, David C. Green, Jeroen J. P. Kuenen, Stefan Reis, and Massimo Vieno
Atmos. Chem. Phys., 18, 4497–4518, https://doi.org/10.5194/acp-18-4497-2018, https://doi.org/10.5194/acp-18-4497-2018, 2018
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The main hypothesis of this paper is that people who live in large cities in the UK disobey the
smoke control lawas it has not been actively enforced for decades now. However, the use of wood in residential heating has increased, partly due to renewable energy targets, but also for discretionary (i.e. pleasant fireplaces) reasons. Our study is based mainly in London, but similar struggles with urban air quality due to residential wood and coal burning are seen in other major European cities.
Christopher S. Malley, Erika von Schneidemesser, Sarah Moller, Christine F. Braban, W. Kevin Hicks, and Mathew R. Heal
Atmos. Chem. Phys., 18, 3563–3587, https://doi.org/10.5194/acp-18-3563-2018, https://doi.org/10.5194/acp-18-3563-2018, 2018
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This study quantifies the contribution of hourly nitrogen dioxide (NO2) variation to annual NO2 concentrations at > 2500 sites across Europe. Sites with distinct monthly, hour of day, and hourly NO2 contributions to annual NO2 were not grouped into specific European regions. Within relatively small areas there were sites with similar annual NO2 but with differences in these contributions. Therefore, measures implemented to reduce annual NO2 in one location may not be as effective in others.
Yuk S. Tang, Christine F. Braban, Ulrike Dragosits, Anthony J. Dore, Ivan Simmons, Netty van Dijk, Janet Poskitt, Gloria Dos Santos Pereira, Patrick O. Keenan, Christopher Conolly, Keith Vincent, Rognvald I. Smith, Mathew R. Heal, and Mark A. Sutton
Atmos. Chem. Phys., 18, 705–733, https://doi.org/10.5194/acp-18-705-2018, https://doi.org/10.5194/acp-18-705-2018, 2018
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A unique long-term dataset of NH3 and NH4+ data from the NAMN is used to assess spatial, seasonal and long-term variability across the UK. NH3 is spatially variable, with distinct temporal profiles according to source types. NH4+ is spatially smoother, with peak concentrations in spring from long-range transport. Decrease in NH3 is smaller than emissions, but NH4+ decreased faster than NH3, due to a shift from stable (NH4)2SO4 to semi-volatile NH4NO3, increasing the atmospheric lifetime of NH3.
Sarah R. Leeson, Peter E. Levy, Netty van Dijk, Julia Drewer, Sophie Robinson, Matthew R. Jones, John Kentisbeer, Ian Washbourne, Mark A. Sutton, and Lucy J. Sheppard
Biogeosciences, 14, 5753–5764, https://doi.org/10.5194/bg-14-5753-2017, https://doi.org/10.5194/bg-14-5753-2017, 2017
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Nitrogen deposition was experimentally increased on a Scottish peat bog over a period of 13 years (2002–2015), simulating pollution from agricultural and fossil-fuel sources. We measured emissions of the greenhouse gas, nitrous oxide (N2O), in response to the increased nitrogen input. In the plots treated with ammonium and nitrate solution, no response was seen. Areas subjected to high ammonia emitted more N2O than expected. Differences were related to impacts on the vegetation.
Andrea Móring, Massimo Vieno, Ruth M. Doherty, Celia Milford, Eiko Nemitz, Marsailidh M. Twigg, László Horváth, and Mark A. Sutton
Biogeosciences, 14, 4161–4193, https://doi.org/10.5194/bg-14-4161-2017, https://doi.org/10.5194/bg-14-4161-2017, 2017
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This study describes and evaluates a new ammonia (NH3) exchange model for grazed fields (GAG_field). GAG_field is able to simulate the main features of the observed NH3 fluxes. A sensitivity analysis for the non-meteorological model parameters showed that the sensitivity of the NH3 fluxes to a parameter varies among urine patches. Moreover, the fluxes modelled with a dynamic soil pH are similar if a constant pH 7.5 is used, suggesting a useful simplification for regional-scale model application.
Chun Lin, Mathew R. Heal, Massimo Vieno, Ian A. MacKenzie, Ben G. Armstrong, Barbara K. Butland, Ai Milojevic, Zaid Chalabi, Richard W. Atkinson, David S. Stevenson, Ruth M. Doherty, and Paul Wilkinson
Geosci. Model Dev., 10, 1767–1787, https://doi.org/10.5194/gmd-10-1767-2017, https://doi.org/10.5194/gmd-10-1767-2017, 2017
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We evaluated EMEP4UK-WRF v4.3 atmospheric chemistry transport simulations at 5 km horizontal resolution over the UK for use in air pollution epidemiology and health burden assessment. Model-measurement comparison focused on daily and annual means for NO2, O3, PM10, and PM2.5. Important statistics for evaluation of air-quality model output against policy (and hence health)-relevant standards – correlation, bias, and root mean square error – were evaluated by site type, year, month and day-of-week.
Stephanie K. Jones, Carole Helfter, Margaret Anderson, Mhairi Coyle, Claire Campbell, Daniela Famulari, Chiara Di Marco, Netty van Dijk, Y. Sim Tang, Cairistiona F. E. Topp, Ralf Kiese, Reimo Kindler, Jan Siemens, Marion Schrumpf, Klaus Kaiser, Eiko Nemitz, Peter E. Levy, Robert M. Rees, Mark A. Sutton, and Ute M. Skiba
Biogeosciences, 14, 2069–2088, https://doi.org/10.5194/bg-14-2069-2017, https://doi.org/10.5194/bg-14-2069-2017, 2017
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We assessed the nitrogen (N), carbon (C) and greenhouse gas (GHG) budget from an intensively managed grassland in southern Scotland using flux budget calculations as well as changes in soil N and C pools over time. Estimates from flux budget calculations indicated that N and C were sequestered, whereas soil stock measurements indicated a smaller N storage and a loss of C from the ecosystem. The GHG sink strength of the net CO2 ecosystem exchange was strongly affected by CH4 and N2O emissions.
Riinu Ots, Massimo Vieno, James D. Allan, Stefan Reis, Eiko Nemitz, Dominique E. Young, Hugh Coe, Chiara Di Marco, Anais Detournay, Ian A. Mackenzie, David C. Green, and Mathew R. Heal
Atmos. Chem. Phys., 16, 13773–13789, https://doi.org/10.5194/acp-16-13773-2016, https://doi.org/10.5194/acp-16-13773-2016, 2016
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Emissions of cooking organic aerosol (COA; from charbroiling, frying, etc.) are currently absent in European emissions inventories yet measurements have pointed to significant COA concentrations. In this study, emissions of COA were developed for the UK by model iteration against year-long measurements at two sites in London. Modelled COA dropped rapidly outside of major urban areas, suggesting that although a notable component in UK urban air, COA does not have a significant effect on rural PM.
Marsailidh M. Twigg, Evgenia Ilyinskaya, Sonya Beccaceci, David C. Green, Matthew R. Jones, Ben Langford, Sarah R. Leeson, Justin J. N. Lingard, Gloria M. Pereira, Heather Carter, Jan Poskitt, Andreas Richter, Stuart Ritchie, Ivan Simmons, Ron I. Smith, Y. Sim Tang, Netty Van Dijk, Keith Vincent, Eiko Nemitz, Massimo Vieno, and Christine F. Braban
Atmos. Chem. Phys., 16, 11415–11431, https://doi.org/10.5194/acp-16-11415-2016, https://doi.org/10.5194/acp-16-11415-2016, 2016
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This study integrates high and low resolution temporal measurements to assess the impact of the Holuhraun effusive eruption in 2014 across the UK. Measurements, modelling and satellite analysis provides details on the transport and chemistry of both gases and particulates during this unique event. The results of the study can be used verify existing atmospheric chemistry models of volcano plumes in order to carry improved risk assessments for future volcanic eruptions.
Riinu Ots, Dominique E. Young, Massimo Vieno, Lu Xu, Rachel E. Dunmore, James D. Allan, Hugh Coe, Leah R. Williams, Scott C. Herndon, Nga L. Ng, Jacqueline F. Hamilton, Robert Bergström, Chiara Di Marco, Eiko Nemitz, Ian A. Mackenzie, Jeroen J. P. Kuenen, David C. Green, Stefan Reis, and Mathew R. Heal
Atmos. Chem. Phys., 16, 6453–6473, https://doi.org/10.5194/acp-16-6453-2016, https://doi.org/10.5194/acp-16-6453-2016, 2016
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This study investigates the contribution of diesel vehicle emissions to organic aerosol formation and particulate matter concentrations in London. Comparisons of simulated pollutant concentrations with observations show good agreement and give confidence in the skill of the model applied. The contribution of diesel vehicle emissions, which are currently not included in official emissions inventories, is demonstrated to be substantial, indicating that more research on this topic is required.
Rebecca M. McKenzie, Mustafa Z. Özel, J. Neil Cape, Julia Drewer, Kerry J. Dinsmore, Eiko Nemitz, Y. Sim Tang, Netty van Dijk, Margaret Anderson, Jacqueline F. Hamilton, Mark A. Sutton, Martin W. Gallagher, and Ute Skiba
Biogeosciences, 13, 2353–2365, https://doi.org/10.5194/bg-13-2353-2016, https://doi.org/10.5194/bg-13-2353-2016, 2016
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Dissolved organic nitrogen (DON) contributes significantly to the overall nitrogen budget and can potentially be biologically available as a source of N. Despite this it is not routinely measured. This study found that DON contributed up to 10 % of the total dissolved nitrogen (TDN) found in precipitation and was the most dominant fraction in soil water (99 %) and stream water (75 %).
Andrea Móring, Massimo Vieno, Ruth M. Doherty, Johannes Laubach, Arezoo Taghizadeh-Toosi, and Mark A. Sutton
Biogeosciences, 13, 1837–1861, https://doi.org/10.5194/bg-13-1837-2016, https://doi.org/10.5194/bg-13-1837-2016, 2016
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A process-based, weather-driven model for ammonia emission from a urine patch has been developed and its sensitivity to various factors assessed. The model can simulate the ammoniacal nitrogen content, pH and the water content of the soil under a urine patch.
The simulated variables were in a good agreement with the measurements. The sensitivity analysis highlighted the vital role of temperature in ammonia exchange. The model is potentially suitable for larger scale application.
M. Vieno, M. R. Heal, M. L. Williams, E. J. Carnell, E. Nemitz, J. R. Stedman, and S. Reis
Atmos. Chem. Phys., 16, 265–276, https://doi.org/10.5194/acp-16-265-2016, https://doi.org/10.5194/acp-16-265-2016, 2016
D. Fowler, C. E. Steadman, D. Stevenson, M. Coyle, R. M. Rees, U. M. Skiba, M. A. Sutton, J. N. Cape, A. J. Dore, M. Vieno, D. Simpson, S. Zaehle, B. D. Stocker, M. Rinaldi, M. C. Facchini, C. R. Flechard, E. Nemitz, M. Twigg, J. W. Erisman, K. Butterbach-Bahl, and J. N. Galloway
Atmos. Chem. Phys., 15, 13849–13893, https://doi.org/10.5194/acp-15-13849-2015, https://doi.org/10.5194/acp-15-13849-2015, 2015
C. S. Malley, C. F. Braban, P. Dumitrean, J. N. Cape, and M. R. Heal
Atmos. Chem. Phys., 15, 8361–8380, https://doi.org/10.5194/acp-15-8361-2015, https://doi.org/10.5194/acp-15-8361-2015, 2015
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In this study the regional component of ground level ozone is linked to the chemical loss of 27 measured VOCs at two UK monitoring sites and integrated with gridded European VOC emissions. The relative VOC chemical loss indicates that emission controls of a large number of VOCs and targeting VOCs with highest chemical loss are both required to reduce regional ozone. The benefit resulting from the disaggregation of VOC source sectors to the identification of high VOC-emitting sources is shown.
M. M. Twigg, C. F. Di Marco, S. Leeson, N. van Dijk, M. R. Jones, I. D. Leith, E. Morrison, M. Coyle, R. Proost, A. N. M. Peeters, E. Lemon, T. Frelink, C. F. Braban, E. Nemitz, and J. N. Cape
Atmos. Chem. Phys., 15, 8131–8145, https://doi.org/10.5194/acp-15-8131-2015, https://doi.org/10.5194/acp-15-8131-2015, 2015
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Hourly inorganic composition of UK background particulate matter (PM10 and PM2.5) has been studied for a 6.5-year period at Auchencorth Moss, Scotland. Long-range transport of both anthropogenic secondary and natural primary PM is observed, driven primarily by meteorology. The importance of nitrate, sulfate and ammonium during pollution events in the UK is demonstrated.
C. S. Malley, M. R. Heal, G. Mills, and C. F. Braban
Atmos. Chem. Phys., 15, 4025–4042, https://doi.org/10.5194/acp-15-4025-2015, https://doi.org/10.5194/acp-15-4025-2015, 2015
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Health- and vegetation-relevant ozone exposure metrics (SOMO10/SOMO35 and PODY/AOT40 respectively) are analysed between 1990 and 2013 using data from the UK EMEP supersites: Auchencorth Moss, southern Scotland and Harwell, south-east England. Analysis shows that for health-relevant ozone exposure, improvement has been achieved for SOMO35 but not for SOMO10 despite European mitigation strategies reducing precursor emissions. Vegetation impacts based on PODY have also not decreased.
L. R. Crilley, W. J. Bloss, J. Yin, D. C. S. Beddows, R. M. Harrison, J. D. Allan, D. E. Young, M. Flynn, P. Williams, P. Zotter, A. S. H. Prevot, M. R. Heal, J. F. Barlow, C. H. Halios, J. D. Lee, S. Szidat, and C. Mohr
Atmos. Chem. Phys., 15, 3149–3171, https://doi.org/10.5194/acp-15-3149-2015, https://doi.org/10.5194/acp-15-3149-2015, 2015
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Wood is a renewable fuel but its combustion for residential heating releases a number of locally acting air pollutants, most notably particulate matter known to have adverse effects on human health. This paper used chemical tracers for wood smoke to estimate the contribution that burning wood makes to concentrations of airborne particles in the atmosphere of southern England and most particularly in London.
M. Vieno, M. R. Heal, S. Hallsworth, D. Famulari, R. M. Doherty, A. J. Dore, Y. S. Tang, C. F. Braban, D. Leaver, M. A. Sutton, and S. Reis
Atmos. Chem. Phys., 14, 8435–8447, https://doi.org/10.5194/acp-14-8435-2014, https://doi.org/10.5194/acp-14-8435-2014, 2014
E. Boegh, R. Houborg, J. Bienkowski, C. F. Braban, T. Dalgaard, N. van Dijk, U. Dragosits, E. Holmes, V. Magliulo, K. Schelde, P. Di Tommasi, L. Vitale, M. R. Theobald, P. Cellier, and M. A. Sutton
Biogeosciences, 10, 6279–6307, https://doi.org/10.5194/bg-10-6279-2013, https://doi.org/10.5194/bg-10-6279-2013, 2013
J. Schmale, J. Schneider, E. Nemitz, Y. S. Tang, U. Dragosits, T. D. Blackall, P. N. Trathan, G. J. Phillips, M. Sutton, and C. F. Braban
Atmos. Chem. Phys., 13, 8669–8694, https://doi.org/10.5194/acp-13-8669-2013, https://doi.org/10.5194/acp-13-8669-2013, 2013
E. Vogt, C. F. Braban, U. Dragosits, M. R. Theobald, M. F. Billett, A. J. Dore, Y. S. Tang, N. van Dijk, R. M. Rees, C. McDonald, S. Murray, U. M. Skiba, and M. A. Sutton
Biogeosciences, 10, 119–133, https://doi.org/10.5194/bg-10-119-2013, https://doi.org/10.5194/bg-10-119-2013, 2013
Related subject area
Subject: Gases | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Biomass-burning sources control ambient particulate matter, but traffic and industrial sources control volatile organic compound (VOC) emissions and secondary-pollutant formation during extreme pollution events in Delhi
Multi-year observations of variable incomplete combustion in the New York megacity
Observations of the vertical distributions of summertime atmospheric pollutants in Nam Co: OH production and source analysis
Measurement report: Elevated atmospheric ammonia may promote particle pH and HONO formation – insights from the COVID-19 pandemic
Measurement report: Vertical and temporal variability in the near-surface ozone production rate and sensitivity in an urban area in the Pearl River Delta region, China
Elevated oxidized mercury in the free troposphere: analytical advances and application at a remote continental mountaintop site
Using observed urban NOx sinks to constrain VOC reactivity and the ozone and radical budget in the Seoul Metropolitan Area
Real-world emission characteristics of VOCs from typical cargo ships and their potential contributions to secondary organic aerosol and O3 under low-sulfur fuel policies
NO3 reactivity during a summer period in a temperate forest below and above the canopy
The role of oceanic ventilation and terrestrial outflow in atmospheric non-methane hydrocarbons over the Chinese marginal seas
Concentration and source changes of nitrous acid (HONO) during the COVID-19 lockdown in Beijing
Characteristics and sources of nonmethane volatile organic compounds (NMVOCs) and O3–NOx–NMVOC relationships in Zhengzhou, China
Deciphering anthropogenic and biogenic contributions to selected non-methane volatile organic compound emissions in an urban area
Emission characteristics of reactive organic gases (ROGs) from industrial volatile chemical products (VCPs) in the Pearl River Delta (PRD), China
Measurement report: Enhanced photochemical formation of formic and isocyanic acids in urban regions aloft – insights from tower-based online gradient measurements
Sources of organic gases and aerosol particles and their roles in nighttime particle growth at a rural forested site in southwest Germany
Surface snow bromide and nitrate at Eureka, Canada, in early spring and implications for polar boundary layer chemistry
Opinion: Strengthening research in the Global South – atmospheric science opportunities in South America and Africa
Measurement Report: Urban Ammonia and Amines in Houston, Texas
Consistency evaluation of tropospheric ozone from ozonesonde and IAGOS aircraft observations: vertical distribution, ozonesonde types and station-airport distance
Investigating Carbonyl Compounds above the Amazon Rainforest using PTR-ToF-MS with NO+ Chemical Ionization
Shipping and algae emissions have a major impact on ambient air mixing ratios of non-methane hydrocarbons (NMHCs) and methanethiol on Utö Island in the Baltic Sea
Contribution of cooking emissions to the urban volatile organic compounds in Las Vegas, NV
Reanalysis of NOAA H2 observations: implications for the H2 budget
A large role of missing volatile organic compound reactivity from anthropogenic emissions in ozone pollution regulation
Measurement report: Insights into the chemical composition and origin of molecular clusters and potential precursor molecules present in the free troposphere over the southern Indian Ocean: observations from the Maïdo Observatory (2150 m a.s.l., Réunion)
Ozone deposition measurements over wheat fields in the North China Plain: variability and related factors of deposition flux and velocity
Production of oxygenated volatile organic compounds from the ozonolysis of coastal seawater
Comment on “Transport of substantial stratospheric ozone to the surface by a dying typhoon and shallow convection” by Chen et al. (2022)
Observations of cyanogen bromide (BrCN) in the global troposphere and their relation to polar surface O3 destruction
CO2 and CO temporal variability over Mexico City from ground-based total column and surface measurements
Individual coal mine methane emissions constrained by eddy covariance measurements: low bias and missing sources
Measurement report: In-flight and ground-based measurements of nitrogen oxide emissions from latest generation jet engines and 100% sustainable aviation fuel
Measurement report: Observations of ground-level ozone concentration gradients perpendicular to the Lake Ontario shoreline
Measurement report: The Palau Atmospheric Observatory and its ozonesonde record – continuous monitoring of tropospheric composition and dynamics in the tropical western Pacific
Quantifying SO2 oxidation pathways to atmospheric sulfate using stable sulfur and oxygen isotopes: laboratory simulation and field observation
Influences of downward transport and photochemistry on surface ozone over East Antarctica during austral summer: in situ observations and model simulations
Iodine oxoacids and their roles in sub-3 nm particle growth in polluted urban environments
Intensive photochemical oxidation in the marine atmosphere: evidence from direct radical measurements
Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOx oxidation pathways and emission sources
Measurement report: Method for evaluating CO2 emissions from a cement plant using atmospheric δ(O2 ∕ N2) and CO2 measurements and its implication for future detection of CO2 capture signals
Aircraft-based mass balance estimate of methane emissions from offshore gas facilities in the southern North Sea
Measurement report: Sources, sinks and lifetime of NOX in a sub-urban temperate forest at night
Parameterizations of US wildfire and prescribed fire emission ratios and emission factors based on FIREX-AQ aircraft measurements
Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta
The interhemispheric gradient of SF6 in the upper troposphere
Weather regimes and the related atmospheric composition at a Pyrenean observatory characterized by hierarchical clustering of a 5-year data set
Tropospheric bromine monoxide vertical profiles retrieved across the Alaskan Arctic in springtime
Source apportionment of methane emissions from the Upper Silesian Coal Basin using isotopic signatures
Measurement report: Exchange fluxes of HONO over agricultural fields in the North China Plain
Arpit Awasthi, Baerbel Sinha, Haseeb Hakkim, Sachin Mishra, Varkrishna Mummidivarapu, Gurmanjot Singh, Sachin D. Ghude, Vijay Kumar Soni, Narendra Nigam, Vinayak Sinha, and Madhavan N. Rajeevan
Atmos. Chem. Phys., 24, 10279–10304, https://doi.org/10.5194/acp-24-10279-2024, https://doi.org/10.5194/acp-24-10279-2024, 2024
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We use 111 volatile organic compounds (VOCs), PM10, and PM2.5 in a positive matrix factorization (PMF) model to resolve 11 pollution sources validated with chemical fingerprints. Crop residue burning and heating account for ~ 50 % of the PM, while traffic and industrial emissions dominate the gas-phase VOC burden and formation potential of secondary organic aerosols (> 60 %). Non-tailpipe emissions from compressed-natural-gas-fuelled commercial vehicles dominate the transport sector's PM burden.
Luke D. Schiferl, Cong Cao, Bronte Dalton, Andrew Hallward-Driemeier, Ricardo Toledo-Crow, and Róisín Commane
Atmos. Chem. Phys., 24, 10129–10142, https://doi.org/10.5194/acp-24-10129-2024, https://doi.org/10.5194/acp-24-10129-2024, 2024
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Carbon monoxide (CO) is an air pollutant and an important indicator of the incomplete combustion of fossil fuels in cities. Using 4 years of winter and spring observations in New York City, we found that both the magnitude and variability of CO from the metropolitan area are greater than expected. Transportation emissions cannot explain the missing and variable CO, which points to energy from buildings as a likely underappreciated source of urban air pollution and greenhouse gas emissions.
Chengzhi Xing, Cheng Liu, Chunxiang Ye, Jingkai Xue, Hongyu Wu, Xiangguang Ji, Jinping Ou, and Qihou Hu
Atmos. Chem. Phys., 24, 10093–10112, https://doi.org/10.5194/acp-24-10093-2024, https://doi.org/10.5194/acp-24-10093-2024, 2024
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We identified the contributions of ozone (O3) and nitrous acid (HONO) to the production rates of hydroxide (OH) in vertical space on the Tibetan Plateau (TP). A new insight was offered: the contributions of HONO and O3 to the production rates of OH on the TP are even greater than in lower-altitudes areas. This study enriches the understanding of vertical distribution of atmospheric components and explains the strong atmospheric oxidation capacity (AOC) on the TP.
Xinyuan Zhang, Lingling Wang, Nan Wang, Shuangliang Ma, Shenbo Wang, Ruiqin Zhang, Dong Zhang, Mingkai Wang, and Hongyu Zhang
Atmos. Chem. Phys., 24, 9885–9898, https://doi.org/10.5194/acp-24-9885-2024, https://doi.org/10.5194/acp-24-9885-2024, 2024
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This study highlights the importance of the redox reaction of NO2 with SO2 based on actual atmospheric observations. The particle pH in future China is expected to rise steadily. Consequently, this reaction could become a significant source of HONO in China. Therefore, it is crucial to coordinate the control of SO2, NOx, and NH3 emissions to avoid a rapid increase in the particle pH.
Jun Zhou, Chunsheng Zhang, Aiming Liu, Bin Yuan, Yan Wang, Wenjie Wang, Jie-Ping Zhou, Yixin Hao, Xiao-Bing Li, Xianjun He, Xin Song, Yubin Chen, Suxia Yang, Shuchun Yang, Yanfeng Wu, Bin Jiang, Shan Huang, Junwen Liu, Yuwen Peng, Jipeng Qi, Minhui Deng, Bowen Zhong, Yibo Huangfu, and Min Shao
Atmos. Chem. Phys., 24, 9805–9826, https://doi.org/10.5194/acp-24-9805-2024, https://doi.org/10.5194/acp-24-9805-2024, 2024
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In-depth understanding of the near-ground vertical variability in photochemical ozone (O3) formation is crucial for mitigating O3 pollution. Utilizing a self-built vertical observation system, a direct net photochemical O3 production rate detection system, and an observation-based model, we diagnosed the vertical distributions and formation mechanism of net photochemical O3 production rates and sensitivity in the Pearl River Delta region, one of the most O3-polluted areas in China.
Eleanor J. Derry, Tyler R. Elgiar, Taylor Y. Wilmot, Nicholas W. Hoch, Noah S. Hirshorn, Peter Weiss-Penzias, Christopher F. Lee, John C. Lin, A. Gannet Hallar, Rainer Volkamer, Seth N. Lyman, and Lynne E. Gratz
Atmos. Chem. Phys., 24, 9615–9643, https://doi.org/10.5194/acp-24-9615-2024, https://doi.org/10.5194/acp-24-9615-2024, 2024
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Mercury (Hg) is a globally distributed neurotoxic pollutant. Atmospheric deposition is the main source of Hg in ecosystems. However, measurement biases hinder understanding of the origins and abundance of the more bioavailable oxidized form. We used an improved, calibrated measurement system to study air mass composition and transport of atmospheric Hg at a remote mountaintop site in the central US. Oxidized Hg originated upwind in the low to middle free troposphere under clean, dry conditions.
Benjamin A. Nault, Katherine R. Travis, James H. Crawford, Donald R. Blake, Pedro Campuzano-Jost, Ronald C. Cohen, Joshua P. DiGangi, Glenn S. Diskin, Samuel R. Hall, L. Gregory Huey, Jose L. Jimenez, Kyung-Eun Min, Young Ro Lee, Isobel J. Simpson, Kirk Ullmann, and Armin Wisthaler
Atmos. Chem. Phys., 24, 9573–9595, https://doi.org/10.5194/acp-24-9573-2024, https://doi.org/10.5194/acp-24-9573-2024, 2024
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Ozone (O3) is a pollutant formed from the reactions of gases emitted from various sources. In urban areas, the density of human activities can increase the O3 formation rate (P(O3)), thus impacting air quality and health. Observations collected over Seoul, South Korea, are used to constrain P(O3). A high local P(O3) was found; however, local P(O3) was partly reduced due to compounds typically ignored. These observations also provide constraints for unmeasured compounds that will impact P(O3).
Fan Zhang, Binyu Xiao, Zeyu Liu, Yan Zhang, Chongguo Tian, Rui Li, Can Wu, Yali Lei, Si Zhang, Xinyi Wan, Yubao Chen, Yong Han, Min Cui, Cheng Huang, Hongli Wang, Yingjun Chen, and Gehui Wang
Atmos. Chem. Phys., 24, 8999–9017, https://doi.org/10.5194/acp-24-8999-2024, https://doi.org/10.5194/acp-24-8999-2024, 2024
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Mandatory use of low-sulfur fuel due to global sulfur limit regulations means large uncertainties in volatile organic compound (VOC) emissions. On-board tests of VOCs from nine cargo ships in China were carried out. Results showed that switching from heavy-fuel oil to diesel increased emission factor VOCs by 48 % on average, enhancing O3 and the secondary organic aerosol formation potential. Thus, implementing a global ultra-low-sulfur oil policy needs to be optimized in the near future.
Patrick Dewald, Tobias Seubert, Simone T. Andersen, Gunther N. T. E. Türk, Jan Schuladen, Max R. McGillen, Cyrielle Denjean, Jean-Claude Etienne, Olivier Garrouste, Marina Jamar, Sergio Harb, Manuela Cirtog, Vincent Michoud, Mathieu Cazaunau, Antonin Bergé, Christopher Cantrell, Sebastien Dusanter, Bénédicte Picquet-Varrault, Alexandre Kukui, Chaoyang Xue, Abdelwahid Mellouki, Jos Lelieveld, and John N. Crowley
Atmos. Chem. Phys., 24, 8983–8997, https://doi.org/10.5194/acp-24-8983-2024, https://doi.org/10.5194/acp-24-8983-2024, 2024
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In the scope of a field campaign in a suburban forest near Paris in the summer of 2022, we measured the reactivity of the nitrate radical NO3 towards biogenic volatile organic compounds (BVOCs; e.g. monoterpenes) mainly below but also above the canopy. NO3 reactivity was the highest during nights with strong temperature inversions and decreased strongly with height. Reactions with BVOCs were the main removal process of NO3 throughout the diel cycle below the canopy.
Jian Wang, Lei Xue, Qianyao Ma, Feng Xu, Gaobin Xu, Shibo Yan, Jiawei Zhang, Jianlong Li, Honghai Zhang, Guiling Zhang, and Zhaohui Chen
Atmos. Chem. Phys., 24, 8721–8736, https://doi.org/10.5194/acp-24-8721-2024, https://doi.org/10.5194/acp-24-8721-2024, 2024
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This study investigated the distribution and sources of non-methane hydrocarbons (NMHCs) in the lower atmosphere over the marginal seas of China. NMHCs, a subset of volatile organic compounds (VOCs), play a crucial role in atmospheric chemistry. Derived from systematic atmospheric sampling in coastal cities and marginal sea regions, this study offers valuable insights into the interaction between land and sea in shaping offshore atmospheric NMHCs.
Yusheng Zhang, Feixue Zheng, Zemin Feng, Chaofan Lian, Weigang Wang, Xiaolong Fan, Wei Ma, Zhuohui Lin, Chang Li, Gen Zhang, Chao Yan, Ying Zhang, Veli-Matti Kerminen, Federico Bianch, Tuukka Petäjä, Juha Kangasluoma, Markku Kulmala, and Yongchun Liu
Atmos. Chem. Phys., 24, 8569–8587, https://doi.org/10.5194/acp-24-8569-2024, https://doi.org/10.5194/acp-24-8569-2024, 2024
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The nitrous acid (HONO) budget was validated during a COVID-19 lockdown event. The main conclusions are (1) HONO concentrations showed a significant decrease from 0.97 to 0.53 ppb during lockdown; (2) vehicle emissions accounted for 53 % of nighttime sources, with the heterogeneous conversion of NO2 on ground surfaces more important than aerosol; and (3) the dominant daytime source shifted from the homogenous reaction between NO and OH (51 %) to nitrate photolysis (53 %) during lockdown.
Dong Zhang, Xiao Li, Minghao Yuan, Yifei Xu, Qixiang Xu, Fangcheng Su, Shenbo Wang, and Ruiqin Zhang
Atmos. Chem. Phys., 24, 8549–8567, https://doi.org/10.5194/acp-24-8549-2024, https://doi.org/10.5194/acp-24-8549-2024, 2024
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The increasing concentration of O3 precursors and unfavorable meteorological conditions are key factors in the formation of O3 pollution in Zhengzhou. Vehicular exhausts (28 %), solvent usage (27 %), and industrial production (22 %) are identified as the main sources of NMVOCs. Moreover, O3 formation in Zhengzhou is found to be in an anthropogenic volatile organic compound (AVOC)-limited regime. Thus, to reduce O3 formation, a minimum AVOCs / NOx reduction ratio ≥ 3 : 1 is recommended.
Arianna Peron, Martin Graus, Marcus Striednig, Christian Lamprecht, Georg Wohlfahrt, and Thomas Karl
Atmos. Chem. Phys., 24, 7063–7083, https://doi.org/10.5194/acp-24-7063-2024, https://doi.org/10.5194/acp-24-7063-2024, 2024
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The anthropogenic fraction of non-methane volatile organic compound (NMVOC) emissions associated with biogenic sources (e.g., terpenes) is investigated based on eddy covariance observations. The anthropogenic fraction of terpene emissions is strongly dependent on season. When analyzing volatile chemical product (VCP) emissions in urban environments, we caution that observations from short-term campaigns might over-/underestimate their significance depending on local and seasonal circumstances.
Sihang Wang, Bin Yuan, Xianjun He, Ru Cui, Xin Song, Yubin Chen, Caihong Wu, Chaomin Wang, Yibo Huangfu, Xiao-Bing Li, Boguang Wang, and Min Shao
Atmos. Chem. Phys., 24, 7101–7121, https://doi.org/10.5194/acp-24-7101-2024, https://doi.org/10.5194/acp-24-7101-2024, 2024
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Emissions of reactive organic gases from industrial volatile chemical product sources are measured. There are large differences among these industrial sources. We show that oxygenated species account for significant contributions to reactive organic gas emissions, especially for industrial sources utilizing water-borne chemicals.
Qing Yang, Xiao-Bing Li, Bin Yuan, Xiaoxiao Zhang, Yibo Huangfu, Lei Yang, Xianjun He, Jipeng Qi, and Min Shao
Atmos. Chem. Phys., 24, 6865–6882, https://doi.org/10.5194/acp-24-6865-2024, https://doi.org/10.5194/acp-24-6865-2024, 2024
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Online vertical gradient measurements of formic and isocyanic acids were made based on a 320 m tower in a megacity. Vertical variations and sources of the two acids were analyzed in this study. We find that formic and isocyanic acids exhibited positive vertical gradients and were mainly contributed by photochemical formations. The formation of formic and isocyanic acids was also significantly enhanced in urban regions aloft.
Junwei Song, Harald Saathoff, Feng Jiang, Linyu Gao, Hengheng Zhang, and Thomas Leisner
Atmos. Chem. Phys., 24, 6699–6717, https://doi.org/10.5194/acp-24-6699-2024, https://doi.org/10.5194/acp-24-6699-2024, 2024
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This study presents concurrent online measurements of organic gas and particles (VOCs and OA) at a forested site in summer. Both VOCs and OA were largely contributed by oxygenated organic compounds. Semi-volatile oxygenated OA and organic nitrate formed from monoterpenes and sesquiterpenes contributed significantly to nighttime particle growth. The results help us to understand the causes of nighttime particle growth regularly observed in summer in central European rural forested environments.
Xin Yang, Kimberly Strong, Alison S. Criscitiello, Marta Santos-Garcia, Kristof Bognar, Xiaoyi Zhao, Pierre Fogal, Kaley A. Walker, Sara M. Morris, and Peter Effertz
Atmos. Chem. Phys., 24, 5863–5886, https://doi.org/10.5194/acp-24-5863-2024, https://doi.org/10.5194/acp-24-5863-2024, 2024
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This study uses snow samples collected from a Canadian high Arctic site, Eureka, to demonstrate that surface snow in early spring is a net sink of atmospheric bromine and nitrogen. Surface snow bromide and nitrate are significantly correlated, indicating the oxidation of reactive nitrogen is accelerated by reactive bromine. In addition, we show evidence that snow photochemical release of reactive bromine is very weak, and its emission flux is much smaller than the deposition flux of bromide.
Rebecca M. Garland, Katye E. Altieri, Laura Dawidowski, Laura Gallardo, Aderiana Mbandi, Nestor Y. Rojas, and N'datchoh E. Touré
Atmos. Chem. Phys., 24, 5757–5764, https://doi.org/10.5194/acp-24-5757-2024, https://doi.org/10.5194/acp-24-5757-2024, 2024
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This opinion piece focuses on two geographical areas in the Global South where the authors are based that are underrepresented in atmospheric science. This opinion provides context on common challenges and constraints, with suggestions on how the community can address these. The focus is on the strengths of atmospheric science research in these regions. It is these strengths, we believe, that highlight the critical role of Global South researchers in the future of atmospheric science research.
Lee Tiszenkel, James Flynn, and Shan-Hu Lee
EGUsphere, https://doi.org/10.5194/egusphere-2024-1230, https://doi.org/10.5194/egusphere-2024-1230, 2024
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Ammonia and amines are important ingredients for aerosol formation in urban environments, but the measurements of these compounds are extremely challenging. Our observations show that urban ammonia and amines in Houston are emitted from urban sources and diurnal variations of their concentrations are governed by gas-to-particle conversion processes.
Honglei Wang, David W. Tarasick, Jane Liu, Herman G. J. Smit, Roeland Van Malderen, Lijuan Shen, and Tianliang Zhao
EGUsphere, https://doi.org/10.5194/egusphere-2024-1015, https://doi.org/10.5194/egusphere-2024-1015, 2024
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In this study, we identify 23 suitable pairs of sites in the WOUDC and IAGOS datasets from 1995 to 2021, compare the average vertical distribution of tropospheric O3 shown by ozonesonde and aircraft measurements, and analyze their differences by ozonesonde type and by station-airport distance.
Akima Ringsdorf, Achim Edtbauer, Bruna Holanda, Christopher Poehlker, Marta O. Sá, Alessandro Araújo, Jürgen Kesselmeier, Jos Lelieveld, and Jonathan Williams
EGUsphere, https://doi.org/10.5194/egusphere-2024-1210, https://doi.org/10.5194/egusphere-2024-1210, 2024
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We show the average height distribution of separately observed aldehydes and ketones over a day and discuss their rainforest-specific sources and sinks and their seasonal changes above the Amazon rainforest. Ketones have much longer atmospheric lifetimes than aldehydes, and thus different implications for atmospheric chemistry. However, they are commonly observed together, which we overcome by measuring with a NO+ chemical ionization mass spectrometer for the first time in the Amazon rainforest.
Heidi Hellén, Rostislav Kouznetsov, Kaisa Kraft, Jukka Seppälä, Mika Vestenius, Jukka-Pekka Jalkanen, Lauri Laakso, and Hannele Hakola
Atmos. Chem. Phys., 24, 4717–4731, https://doi.org/10.5194/acp-24-4717-2024, https://doi.org/10.5194/acp-24-4717-2024, 2024
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Mixing ratios of C2-C5 NMHCs and methanethiol were measured on an island in the Baltic Sea using an in situ gas chromatograph. Shipping emissions were found to be an important source of ethene, ethyne, propene, and benzene. High summertime mixing ratios of methanethiol and dependence of mixing ratios on seawater temperature and height indicated the biogenic origin to possibly be phytoplankton or macroalgae. These emissions may have a strong impact on SO2 production and new particle formation.
Matthew M. Coggon, Chelsea E. Stockwell, Lu Xu, Jeff Peischl, Jessica B. Gilman, Aaron Lamplugh, Henry J. Bowman, Kenneth Aikin, Colin Harkins, Qindan Zhu, Rebecca H. Schwantes, Jian He, Meng Li, Karl Seltzer, Brian McDonald, and Carsten Warneke
Atmos. Chem. Phys., 24, 4289–4304, https://doi.org/10.5194/acp-24-4289-2024, https://doi.org/10.5194/acp-24-4289-2024, 2024
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Residential and commercial cooking emits pollutants that degrade air quality. Here, ambient observations show that cooking is an important contributor to anthropogenic volatile organic compounds (VOCs) emitted in Las Vegas, NV. These emissions are not fully presented in air quality models, and more work may be needed to quantify emissions from important sources, such as commercial restaurants.
Fabien Paulot, Gabrielle Pétron, Andrew M. Crotwell, and Matteo B. Bertagni
Atmos. Chem. Phys., 24, 4217–4229, https://doi.org/10.5194/acp-24-4217-2024, https://doi.org/10.5194/acp-24-4217-2024, 2024
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New data from the National Oceanic and Atmospheric Administration show that hydrogen (H2) concentrations increased from 2010 to 2019, which is consistent with the simulated increase in H2 photochemical production (mainly from methane). But this cannot be reconciled with the expected decrease (increase) in H2 anthropogenic emissions (soil deposition) in the same period. This shows gaps in our knowledge of the H2 biogeochemical cycle that must be resolved to quantify the impact of higher H2 usage.
Wenjie Wang, Bin Yuan, Hang Su, Yafang Cheng, Jipeng Qi, Sihang Wang, Wei Song, Xinming Wang, Chaoyang Xue, Chaoqun Ma, Fengxia Bao, Hongli Wang, Shengrong Lou, and Min Shao
Atmos. Chem. Phys., 24, 4017–4027, https://doi.org/10.5194/acp-24-4017-2024, https://doi.org/10.5194/acp-24-4017-2024, 2024
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This study investigates the important role of unmeasured volatile organic compounds (VOCs) in ozone formation. Based on results in a megacity of China, we show that unmeasured VOCs can contribute significantly to ozone fomation and also influence the determination of ozone control strategy. Our results show that these unmeasured VOCs are mainly from human sources.
Romain Salignat, Matti Rissanen, Siddharth Iyer, Jean-Luc Baray, Pierre Tulet, Jean-Marc Metzger, Jérôme Brioude, Karine Sellegri, and Clémence Rose
Atmos. Chem. Phys., 24, 3785–3812, https://doi.org/10.5194/acp-24-3785-2024, https://doi.org/10.5194/acp-24-3785-2024, 2024
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Using mass spectrometry data collected at the Maïdo Observatory (2160 m a.s.l., Réunion), we provide the first detailed analysis of molecular cluster chemical composition specifically in the marine free troposphere. The abundance of the identified species is related both to in situ meteorological parameters and air mass history, which also provide insight into their origin. Our work makes an important contribution to documenting the chemistry and physics of the marine free troposphere.
Xiaoyi Zhang, Wanyun Xu, Weili Lin, Gen Zhang, Jinjian Geng, Li Zhou, Huarong Zhao, Sanxue Ren, Guangsheng Zhou, Jianmin Chen, and Xiaobin Xu
EGUsphere, https://doi.org/10.5194/egusphere-2024-643, https://doi.org/10.5194/egusphere-2024-643, 2024
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Ozone (O3) deposition is a key process removing surface O3, affecting air quality, ecosystem and climate change. This study conducted an O3 deposition measurement over wheat canopy using a newly relaxed eddy accumulation flux system. Large variabilities of O3 deposition were detected mainly determined by crop growth and modulated by various environmental factors. More O3 deposition observations over different surfaces are needed for exploring deposition mechanism, model optimization.
Delaney B. Kilgour, Gordon A. Novak, Megan S. Claflin, Brian M. Lerner, and Timothy H. Bertram
Atmos. Chem. Phys., 24, 3729–3742, https://doi.org/10.5194/acp-24-3729-2024, https://doi.org/10.5194/acp-24-3729-2024, 2024
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Laboratory experiments with seawater mimics suggest ozone deposition to the surface ocean can be a source of reactive carbon to the marine atmosphere. We conduct both field and laboratory measurements to assess abiotic VOC composition and yields from ozonolysis of real surface seawater. We show that C5–C11 aldehydes contribute to the observed VOC emission flux. We estimate that VOCs generated by the ozonolysis of surface seawater are competitive with biological VOC production and emission.
Xiangdong Zheng, Wen Yang, Yuting Sun, Chunmei Geng, Yingying Liu, and Xiaobin Xu
Atmos. Chem. Phys., 24, 3759–3768, https://doi.org/10.5194/acp-24-3759-2024, https://doi.org/10.5194/acp-24-3759-2024, 2024
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Chen et al. (2022) attributed the nocturnal ozone enhancement (NOE) during the night of 31 July 2021 in the North China Plain (NCP) to "the direct stratospheric intrusion to reach the surface". We analyzed in situ data from the NCP. Our results do not suggest that there was a significant impact from the stratosphere on surface ozone during the NOE. We argue that the NOE was not caused by stratospheric intrusion but originated from fresh photochemical production in the lower troposphere.
James M. Roberts, Siyuan Wang, Patrick R. Veres, J. Andrew Neuman, Michael A. Robinson, Ilann Bourgeois, Jeff Peischl, Thomas B. Ryerson, Chelsea R. Thompson, Hannah M. Allen, John D. Crounse, Paul O. Wennberg, Samuel R. Hall, Kirk Ullmann, Simone Meinardi, Isobel J. Simpson, and Donald Blake
Atmos. Chem. Phys., 24, 3421–3443, https://doi.org/10.5194/acp-24-3421-2024, https://doi.org/10.5194/acp-24-3421-2024, 2024
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We measured cyanogen bromide (BrCN) in the troposphere for the first time. BrCN is a product of the same active bromine chemistry that destroys ozone and removes mercury in polar surface environments and is a previously unrecognized sink for active Br compounds. BrCN has an apparent lifetime against heterogeneous loss in the range 1–10 d, so it serves as a cumulative marker of Br-radical chemistry. Accounting for BrCN chemistry is an important part of understanding polar Br cycling.
Noémie Taquet, Wolfgang Stremme, María Eugenia Gonzalez del Castillo, Victor Almanza, Alejandro Bezanilla, Olivier Laurent, Carlos Alberti, Frank Hase, Michel Ramonet, Thomas Lauvaux, Ke Che, and Michel Grutter
EGUsphere, https://doi.org/10.5194/egusphere-2024-512, https://doi.org/10.5194/egusphere-2024-512, 2024
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We studied the variability of CO and CO2 and their ratio over Mexico City from long-term time-resolved FTIR solar absorption and surface measurements. Using the average intraday CO growth rate from total columns and TROPOMI measurements, we additionally estimate the interannual variability of CO and CO2 anthropogenic emissions of the City and relate it to the main influencing events of the last decade, such as the COVID-19 lock-down.
Kai Qin, Wei Hu, Qin He, Fan Lu, and Jason Blake Cohen
Atmos. Chem. Phys., 24, 3009–3028, https://doi.org/10.5194/acp-24-3009-2024, https://doi.org/10.5194/acp-24-3009-2024, 2024
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We compute CH4 emissions and uncertainty on a mine-by-mine basis, including underground, overground, and abandoned mines. Mine-by-mine gas and flux data and 30 min observations from a flux tower located next to a mine shaft are integrated. The observed variability and bias correction are propagated over the emissions dataset, demonstrating that daily observations may not cover the range of variability. Comparisons show both an emissions magnitude and spatial mismatch with current inventories.
Theresa Harlass, Rebecca Dischl, Stefan Kaufmann, Raphael Märkl, Daniel Sauer, Monika Scheibe, Paul Stock, Tiziana Bräuer, Andreas Dörnbrack, Anke Roiger, Hans Schlager, Ulrich Schumann, Tobias Schripp, Tobias Grein, Linda Bondorf, Charles Renard, Maxime Gauthier, Mark Johnson, Darren Luff, Paul Madden, Peter Swann, Denise Ahrens, Reetu Sallinen, and Christiane Voigt
EGUsphere, https://doi.org/10.5194/egusphere-2024-454, https://doi.org/10.5194/egusphere-2024-454, 2024
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Emissions from aircraft have a direct impact on our climate. Here, we present airborne and ground based measurement data of nitrogen oxides which were collected in the exhaust of an Airbus aircraft. We study the impact of burning fossil and sustainable aviation fuel on nitrogen oxide emissions at different engine settings related to combustor temperature, pressure and fuel flow. Further, we compare observations with engine emission models.
Yao Yan Huang and D. James Donaldson
Atmos. Chem. Phys., 24, 2387–2398, https://doi.org/10.5194/acp-24-2387-2024, https://doi.org/10.5194/acp-24-2387-2024, 2024
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Ground-level ozone interacts at the lake–land boundary; this is important to our understanding and modelling of atmospheric chemistry and air pollution in the lower atmosphere. We show that a steep ozone gradient occurs year-round moving inland up to 1 km from the lake and that this gradient is influenced by seasonal factors on the local land environment, where more rural areas are more greatly affected seasonally.
Katrin Müller, Jordis S. Tradowsky, Peter von der Gathen, Christoph Ritter, Sharon Patris, Justus Notholt, and Markus Rex
Atmos. Chem. Phys., 24, 2169–2193, https://doi.org/10.5194/acp-24-2169-2024, https://doi.org/10.5194/acp-24-2169-2024, 2024
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The Palau Atmospheric Observatory is introduced as an ideal site to detect changes in atmospheric composition and dynamics above the remote tropical western Pacific. We focus on the ozone sounding program from 2016–2021, including El Niño 2016. The year-round high convective activity is reflected in dominant low tropospheric ozone and high relative humidity. Their seasonal distributions are unique compared to other tropical sites and are modulated by the Intertropical Convergence Zone.
Ziyan Guo, Keding Lu, Pengxiang Qiu, Mingyi Xu, and Zhaobing Guo
Atmos. Chem. Phys., 24, 2195–2205, https://doi.org/10.5194/acp-24-2195-2024, https://doi.org/10.5194/acp-24-2195-2024, 2024
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The formation of secondary sulfate needs to be further explored. In this work, we simultaneously measured sulfur and oxygen isotopic compositions to gain an increased understanding of specific sulfate formation processes. The results indicated that secondary sulfate was mainly ascribed to SO2 homogeneous oxidation by OH radicals and heterogeneous oxidation by H2O2 and Fe3+ / O2. This study is favourable for deeply investigating the sulfur cycle in the atmosphere.
Imran A. Girach, Narendra Ojha, Prabha R. Nair, Kandula V. Subrahmanyam, Neelakantan Koushik, Mohammed M. Nazeer, Nadimpally Kiran Kumar, Surendran Nair Suresh Babu, Jos Lelieveld, and Andrea Pozzer
Atmos. Chem. Phys., 24, 1979–1995, https://doi.org/10.5194/acp-24-1979-2024, https://doi.org/10.5194/acp-24-1979-2024, 2024
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We investigate surface ozone variability in East Antarctica based on measurements and EMAC global model simulations during austral summer. Nearly half of the surface ozone is found to be of stratospheric origin. The east coast of Antarctica acts as a stronger sink of ozone than surrounding regions. Photochemical loss of ozone is counterbalanced by downward transport of ozone. The study highlights the intertwined role of chemistry and dynamics in governing ozone variations over East Antarctica.
Ying Zhang, Duzitian Li, Xu-Cheng He, Wei Nie, Chenjuan Deng, Runlong Cai, Yuliang Liu, Yishuo Guo, Chong Liu, Yiran Li, Liangduo Chen, Yuanyuan Li, Chenjie Hua, Tingyu Liu, Zongcheng Wang, Jiali Xie, Lei Wang, Tuukka Petäjä, Federico Bianchi, Ximeng Qi, Xuguang Chi, Pauli Paasonen, Yongchun Liu, Chao Yan, Jingkun Jiang, Aijun Ding, and Markku Kulmala
Atmos. Chem. Phys., 24, 1873–1893, https://doi.org/10.5194/acp-24-1873-2024, https://doi.org/10.5194/acp-24-1873-2024, 2024
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This study conducts a long-term observation of gaseous iodine oxoacids in two Chinese megacities, revealing their ubiquitous presence with peak concentrations (up to 0.1 pptv) in summer. Our analysis suggests a mix of terrestrial and marine sources for iodine. Additionally, iodic acid is identified as a notable contributor to sub-3 nm particle growth and particle survival probability.
Guoxian Zhang, Renzhi Hu, Pinhua Xie, Changjin Hu, Xiaoyan Liu, Liujun Zhong, Haotian Cai, Bo Zhu, Shiyong Xia, Xiaofeng Huang, Xin Li, and Wenqing Liu
Atmos. Chem. Phys., 24, 1825–1839, https://doi.org/10.5194/acp-24-1825-2024, https://doi.org/10.5194/acp-24-1825-2024, 2024
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Comprehensive observation of HOx radicals was conducted at a coastal site in the Pearl River Delta. Radical chemistry was influenced by different air masses in a time-dependent way. Land mass promotes a more active photochemical process, with daily averages of 7.1 × 106 and 5.2 × 108 cm−3 for OH and HO2 respectively. The rapid oxidation process was accompanied by a higher diurnal HONO concentration, which influences the ozone-sensitive system and eventually magnifies the background ozone.
Sarah Albertin, Joël Savarino, Slimane Bekki, Albane Barbero, Roberto Grilli, Quentin Fournier, Irène Ventrillard, Nicolas Caillon, and Kathy Law
Atmos. Chem. Phys., 24, 1361–1388, https://doi.org/10.5194/acp-24-1361-2024, https://doi.org/10.5194/acp-24-1361-2024, 2024
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This study reports the first simultaneous records of oxygen (Δ17O) and nitrogen (δ15N) isotopes in nitrogen dioxide (NO2) and nitrate (NO3−). These data are combined with atmospheric observations to explore sub-daily N reactive chemistry and quantify N fractionation effects in an Alpine winter city. The results highlight the necessity of using Δ17O and δ15N in both NO2 and NO3− to avoid biased estimations of NOx sources and fates from NO3− isotopic records in urban winter environments.
Shigeyuki Ishidoya, Kazuhiro Tsuboi, Hiroaki Kondo, Kentaro Ishijima, Nobuyuki Aoki, Hidekazu Matsueda, and Kazuyuki Saito
Atmos. Chem. Phys., 24, 1059–1077, https://doi.org/10.5194/acp-24-1059-2024, https://doi.org/10.5194/acp-24-1059-2024, 2024
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A method evaluating techniques for carbon neutrality, such as carbon capture and storage (CCS), is important. This study presents a method to evaluate CO2 emissions from a cement plant based on atmospheric O2 and CO2 measurements. The method will also be useful for evaluating CO2 capture from flue gas at CCS plants, since the plants remove CO2 from the atmosphere without causing any O2 changes, just as cement plants do, differing only in the direction of CO2 exchange with the atmosphere.
Magdalena Pühl, Anke Roiger, Alina Fiehn, Alan M. Gorchov Negron, Eric A. Kort, Stefan Schwietzke, Ignacio Pisso, Amy Foulds, James Lee, James L. France, Anna E. Jones, Dave Lowry, Rebecca E. Fisher, Langwen Huang, Jacob Shaw, Prudence Bateson, Stephen Andrews, Stuart Young, Pamela Dominutti, Tom Lachlan-Cope, Alexandra Weiss, and Grant Allen
Atmos. Chem. Phys., 24, 1005–1024, https://doi.org/10.5194/acp-24-1005-2024, https://doi.org/10.5194/acp-24-1005-2024, 2024
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In April–May 2019 we carried out an airborne field campaign in the southern North Sea with the aim of studying methane emissions of offshore gas installations. We determined methane emissions from elevated methane measured downstream of the sampled installations. We compare our measured methane emissions with estimated methane emissions from national and global annual inventories. As a result, we find inconsistencies of inventories and large discrepancies between measurements and inventories.
Simone T. Andersen, Max R. McGillen, Chaoyang Xue, Tobias Seubert, Patrick Dewald, Gunther N. T. E. Türk, Jan Schuladen, Cyrielle Denjean, Jean-Claude Etienne, Olivier Garrouste, Marina Jamar, Sergio Harb, Manuela Cirtog, Vincent Michoud, Mathieu Cazaunau, Antonin Bergé, Christopher Cantrell, Sebastien Dusanter, Bénédicte Picquet-Varrault, Alexandre Kukui, Abdelwahid Mellouki, Lucy J. Carpenter, Jos Lelieveld, and John N. Crowley
EGUsphere, https://doi.org/10.5194/egusphere-2023-2848, https://doi.org/10.5194/egusphere-2023-2848, 2024
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Through measurements of various trace gases in a sub-urban forest near Paris in the summer of 2022 we were able to gain insight into the sources and sinks of NOx (NO+NO2) with a special focus on their nighttime chemical/physical loss processes. NO was observed as a result of nighttime soil emissions when ozone levels were strongly depleted by deposition. NO oxidation products were not observed at night indicating that soil and/or foliar surfaces are an efficient sink of reactive nitrogen.
Georgios I. Gkatzelis, Matthew M. Coggon, Chelsea E. Stockwell, Rebecca S. Hornbrook, Hannah Allen, Eric C. Apel, Megan M. Bela, Donald R. Blake, Ilann Bourgeois, Steven S. Brown, Pedro Campuzano-Jost, Jason M. St. Clair, James H. Crawford, John D. Crounse, Douglas A. Day, Joshua P. DiGangi, Glenn S. Diskin, Alan Fried, Jessica B. Gilman, Hongyu Guo, Johnathan W. Hair, Hannah S. Halliday, Thomas F. Hanisco, Reem Hannun, Alan Hills, L. Gregory Huey, Jose L. Jimenez, Joseph M. Katich, Aaron Lamplugh, Young Ro Lee, Jin Liao, Jakob Lindaas, Stuart A. McKeen, Tomas Mikoviny, Benjamin A. Nault, J. Andrew Neuman, John B. Nowak, Demetrios Pagonis, Jeff Peischl, Anne E. Perring, Felix Piel, Pamela S. Rickly, Michael A. Robinson, Andrew W. Rollins, Thomas B. Ryerson, Melinda K. Schueneman, Rebecca H. Schwantes, Joshua P. Schwarz, Kanako Sekimoto, Vanessa Selimovic, Taylor Shingler, David J. Tanner, Laura Tomsche, Krystal T. Vasquez, Patrick R. Veres, Rebecca Washenfelder, Petter Weibring, Paul O. Wennberg, Armin Wisthaler, Glenn M. Wolfe, Caroline C. Womack, Lu Xu, Katherine Ball, Robert J. Yokelson, and Carsten Warneke
Atmos. Chem. Phys., 24, 929–956, https://doi.org/10.5194/acp-24-929-2024, https://doi.org/10.5194/acp-24-929-2024, 2024
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This study reports emissions of gases and particles from wildfires. These emissions are related to chemical proxies that can be measured by satellite and incorporated into models to improve predictions of wildfire impacts on air quality and climate.
Jie Wang, Haichao Wang, Yee Jun Tham, Lili Ming, Zelong Zheng, Guizhen Fang, Cuizhi Sun, Zhenhao Ling, Jun Zhao, and Shaojia Fan
Atmos. Chem. Phys., 24, 977–992, https://doi.org/10.5194/acp-24-977-2024, https://doi.org/10.5194/acp-24-977-2024, 2024
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Many works report NO3 chemistry in inland regions while less target marine regions. We measured N2O5 and related species on a typical island and found intensive nighttime chemistry and rapid NO3 loss. NO contributed significantly to NO3 loss despite its sub-ppbv level, suggesting nocturnal NO3 reactions would be largely enhanced once free from NO emissions in the open ocean. This highlights the strong influences of urban outflow on downward marine areas in terms of nighttime chemistry.
Tanja J. Schuck, Johannes Degen, Eric Hintsa, Peter Hoor, Markus Jesswein, Timo Keber, Daniel Kunkel, Fred Moore, Florian Obersteiner, Matt Rigby, Thomas Wagenhäuser, Luke M. Western, Andreas Zahn, and Andreas Engel
Atmos. Chem. Phys., 24, 689–705, https://doi.org/10.5194/acp-24-689-2024, https://doi.org/10.5194/acp-24-689-2024, 2024
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We study the interhemispheric gradient of sulfur hexafluoride (SF6), a strong long-lived greenhouse gas. Its emissions are stronger in the Northern Hemisphere; therefore, mixing ratios in the Southern Hemisphere lag behind. Comparing the observations to a box model, the model predicts air in the Southern Hemisphere to be older. For a better agreement, the emissions used as model input need to be increased (and their spatial pattern changed), and we need to modify north–south transport.
Jérémy Gueffier, François Gheusi, Marie Lothon, Véronique Pont, Alban Philibert, Fabienne Lohou, Solène Derrien, Yannick Bezombes, Gilles Athier, Yves Meyerfeld, Antoine Vial, and Emmanuel Leclerc
Atmos. Chem. Phys., 24, 287–316, https://doi.org/10.5194/acp-24-287-2024, https://doi.org/10.5194/acp-24-287-2024, 2024
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This study investigates the link between weather regime and atmospheric composition at a Pyrenean observatory. Five years of meteorological data were synchronized on a daily basis and then, using a clustering method, separated into six groups of observation days, with most showing marked characteristics of different weather regimes (fair and disturbed weather, winter windstorms, foehn). Statistical differences in gas and particle concentrations appeared between the groups and are discussed.
Nathaniel Brockway, Peter K. Peterson, Katja Bigge, Kristian D. Hajny, Paul B. Shepson, Kerri A. Pratt, Jose D. Fuentes, Tim Starn, Robert Kaeser, Brian H. Stirm, and William R. Simpson
Atmos. Chem. Phys., 24, 23–40, https://doi.org/10.5194/acp-24-23-2024, https://doi.org/10.5194/acp-24-23-2024, 2024
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Bromine monoxide (BrO) strongly affects atmospheric chemistry in the springtime Arctic, yet there are still many uncertainties around its sources and recycling, particularly in the context of a rapidly changing Arctic. In this study, we observed BrO as a function of altitude above the Alaskan Arctic. We found that BrO was often most concentrated near the ground, confirming the ability of snow to produce and recycle reactive bromine, and identified four common vertical distributions of BrO.
Alina Fiehn, Maximilian Eckl, Julian Kostinek, Michał Gałkowski, Christoph Gerbig, Michael Rothe, Thomas Röckmann, Malika Menoud, Hossein Maazallahi, Martina Schmidt, Piotr Korbeń, Jarosław Neçki, Mila Stanisavljević, Justyna Swolkień, Andreas Fix, and Anke Roiger
Atmos. Chem. Phys., 23, 15749–15765, https://doi.org/10.5194/acp-23-15749-2023, https://doi.org/10.5194/acp-23-15749-2023, 2023
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During the CoMet mission in the Upper Silesian Coal Basin (USCB) ground-based and airborne air samples were taken and analyzed for the isotopic composition of CH4 to derive the mean signature of the USCB and source signatures of individual coal mines. Using δ2H signatures, the biogenic emissions from the USCB account for 15 %–50 % of total emissions, which is underestimated in common emission inventories. This demonstrates the importance of δ2H-CH4 observations for methane source apportionment.
Yifei Song, Chaoyang Xue, Yuanyuan Zhang, Pengfei Liu, Fengxia Bao, Xuran Li, and Yujing Mu
Atmos. Chem. Phys., 23, 15733–15747, https://doi.org/10.5194/acp-23-15733-2023, https://doi.org/10.5194/acp-23-15733-2023, 2023
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We present measurements of HONO flux and related parameters over an agricultural field during a whole growing season of summer maize. This dataset allows studies on the characteristics and influencing factors of soil HONO emissions, determination of HONO emission factors, estimation of total HONO emissions at a national scale, and the discussion on future environmental policies in terms of mitigating regional air pollution.
Cited articles
Aas, W., Carou, S., Alebic-Juretic, A., Aneja, V. P., Balasubramanian, R.,
Berge, H., Cape, J. N., Delon, C., Denmead, O. T., Dennis, R. L., Dentener,
F., Dore, A. J., Du, E., Forti, M. C., Galy-Lacaux, C., Geupel, M., Haeuber,
R., Iacoban, C., Komarov, A. S., Kubin, E., Kulshrestha, U. C., Lamb, B.,
Liu, X., Patra, D. D., Pienaar, J. J., Pinho, P., Rao, P. S. P., Shen, J.,
Sutton, M. A., Theobald, M. R., Vadrevu, K. P., and Vet, R.: Progress in
nitrogen deposition monitoring and modelling, in: Nitrogen deposition,
critical loads and biodiversity, edited by: Sutton, M. A., Mason, K. E.,
Sheppard, L. J., Sverdrup, H., Haeuber, R., and Hicks, W. K., Dordrecht,
Springer, 455–463, 2014.
Allegrini, I., De Santis, F., Di Palo, V., Febo, A., Perrino, C., Possanzini,
M., and Liberti, A.: Annular denuder method for sampling reactive gases and
aerosols in the atmosphere, Sci. Total Environ., 67, 1–16,
https://doi.org/10.1016/0048-9697(87)90062-3, 1987.
Aneja, V. P., Roelle, P. A., Murray, G. C., Southerland, J., Erisman, J. W.,
Fowler, D., Asman, W. A. H., and Patni N.: Atmospheric nitrogen compounds II:
emissions, transport, transformation, deposition and assessment, Atmos.
Environ., 35, 1903–1911, 2001.
Ayers, G. P., Gillett, R. W., Cainey, J. M., and Dick, A. L.: Chloride and
Bromide Loss from Sea salt Particles in Southern Ocean Air, J. Atmos. Chem.,
33, 299–319, https://doi.org/10.1023/A:1006120205159, 1999.
AQEG: Ozone in the United Kingdom, Air Quality Expert Group report,
Department for Environment, Food and Rural Affairs, Scottish Executive, Welsh
Government, Department of the Environment in Northern Ireland, available at:
https://uk-air.defra.gov.uk/assets/documents/reports/aqeg/aqeg-ozone-report.pdf
(last access: 25 March 2017), 2009.
AQEG: Fine Particulate Matter (PM2.5) in the United Kingdom, Air Quality
Expert Group report, Department for Environment, Food and Rural Affairs,
Scottish Executive, Welsh Government, Department of the Environment in
Northern Ireland, available at:
https://uk-air.defra.gov.uk/assets/documents/reports/cat11/1212141150_AQEG_Fine_Particulate_Matter_in_the_UK.pdf
(last access: 25 March 2017), 2012.
AQEG: Linking Emission Inventories and Ambient Measurements, Air Quality
Expert Group report, Department for Environment, Food and Rural Affairs,
Scottish Executive, Welsh Government, Department of the Environment in
Northern Ireland, available at:
https://uk-air.defra.gov.uk/assets/documents/reports/cat11/1508060906_DEF-PB14106_Linking_Emissions_Inventories_And_Ambient_Measurements_Final.pdf
(last access: 25 March 2017), 2013a.
AQEG: Mitigation of United Kingdom PM2.5 Concentrations, Air Quality
Expert Group report, Department for Environment, Food and Rural Affairs,
Scottish Executive, Welsh Government, Department of the Environment in
Northern Ireland, available at:
https://uk-air.defra.gov.uk/assets/documents/reports/cat11/1508060903_DEF-PB14161_Mitigation_of_UK_PM25.pdf
(last access: 25 March 2017), 2013b.
Bai, H., Chungsying, L., Chang, K.-F., and Fang, G.-C.: Sources of sampling
error for field measurement of nitric acid gas by a denuder system, Atmos.
Environ., 37, 941–947, https://doi.org/10.1016/S1352-2310(02)00972-x, 2003
Bleeker, A., Sutton, M. A., Acherman, B., Alebic-Juretic, A., Aneja, V. P.,
Ellermann, T., Erisman, J. W., Fowler, D., Fagerli, H., Gauger, T., Harlen,
K. S., Hole, L. R., Horvath, L., Mitosinkova, M., Smith, R. I., Tang, Y. S.,
and van Pul, A.: Linking Ammonia Emission Trends to Measured Concentrations
and Deposition of Reduced Nitrogen at Different Scales, in: Atmospheric
Ammonia – Detecting Emission Changes and Environmental Impacts, edited by:
Sutton, M. A., Reis, S., and Baker, S. M. H., Springer Netherlands, 123–180,
2009.
Bobbink, R., Hicks, K., Galloway, J., Spranger, T., Alkemade, R., Ashmore,
M., Bustamante, M., Cinderby, S., Davidson, E., Dentener, F., Emmett, B.,
Erisman, J.-W., Fenn, M., Gilliam, F., Nordin, A., Pardo, L., and De Vries,
W.: Global assessment of nitrogen deposition effects on terrestrial plant
diversity: a synthesis, Ecol. Appl., 20, 30–59,
https://doi.org/10.1890/08-1140.1, 2010.
Bower, K. N., Choularton, T. W., Gallagher, M. W., Colvile, R. N., Wells, M.,
Beswick, K. M., Wiedensohler, A., Hansson, H.-C., Svenningsson, B.,
Swietlicki, E., Wendisch, M., Berner, A., Kruisz, C., Laj, P., Facchini, M.
C., Fuzzi, S., Bizjak, M., Dollard, G., Jones, B., Acker, K., Wieprecht, W.,
Preiss, M., Sutton, M. A., Hargreaves, K. J., Storeton-West, R. L., Cape, J.
N., and Arends, B. G.: Observations and modelling of the processing of
aerosol by a hill cap cloud, Atmos. Environ., 31, 2527–2544, 1997.
Bull, K. R.: The critical loads/levels approach to gaseous pollutant emission
control, Environ. Poll., 69, 105–123,
https://doi.org/10.1016/0269-7491(91)90137-L, 1991.
Bull, K. R.: Critical loads — Possibilities and constraints, Water Air Soil
Poll., 85, 201–212, https://doi.org/10.1007/bf00483701, 1995.
Bytnerowicz, A., Sanz, M. J., Arbaugh, M. J., Padgett, P. E., Jones, D. P.,
and Davila, A.: Passive sampler for monitoring ambient nitric acid
(HNO3) and nitrous acid (HNO2) concentrations, Atmos. Environ.,
39, 2655–2660, https://doi.org/10.1016/j.atmosenv.2005.01.018, 2005.
Cape, J. N., van der Eerden, L. J., Sheppard, L. J., Leith, I. D., and
Sutton, M. A.: Evidence for changing the Critical Level for ammonia, Environ.
Poll., 157, 1033–1037, https://doi.org/10.1016/j.envpol.2008.09.049, 2009.
Chatfield, C.: The analysis of time series: an introduction, CRC press, 2016.
Chemel, C., Sokhi, R. S., Yu, Y., Hayman, G. D., Vincent, K. J., Fore, A. J.,
Tang, Y. S., Prain, H. D., and Fisher, B. E. A.: Evaluation of a CMAQ
simulation at high resolution over the UK for the calendar year 2003, Atmos.
Environ., 44, 2927–2939, https://doi.org/10.1016/j.atmosenv.2010.03.029, 2010.
Cheng, Y., Duan, F.-K., He, K.-B., Du, Z.-Y., Zheng, M., and Ma, Y.-L.:
Sampling artifacts of organic and inorganic aerosol: Implications for the
speciation measurement of particulate matter, Atmos. Environ., 55, 229–233,
https://doi.org/10.1016/j.atmosenv.2012.03.032, 2012.
Colette, A., Aas, W., Banin, L., Braban, C. F., Ferm, M., González Ortiz,
A., Ilyin, I., Mar, K., Pandolfi, M., Putaud, J.-P., Shatalov, V., Solberg,
S., Spindler, G., Tarasova, O., Vana, M., Adani, M., Almodovar, P., Berton,
E., Bessagnet, B., Bohlin-Nizzetto, P., Boruvkova, J., Breivik, K., Briganti,
G., Cappelletti, A., Cuvelier, K., Derwent, R., D'Isidoro, M., Fagerli, H.,
Funk, C., Garcia Vivanco, M., González Ortiz, A., Haeuber, R., Hueglin,
C., Jenkins, S., Kerr, J., de Leeuw, F., Lynch, J., Manders, A., Mircea, M.,
Pay, M. T., Pritula, D., Putaud, J.-P., Querol, X., Raffort, V., Reiss, I.,
Roustan, Y., Sauvage, S., Scavo, K., Simpson, D., Smith, R. I., Tang, Y. S.,
Theobald, M., Tørseth, K., Tsyro, S., van Pul, A., Vidic, S., Wallasch,
M., and Wind, P.: Air pollution trends in the EMEP region between 1990 and
2012, EMEP/CCC-Report 1/2016, Joint Report of the EMEP Task Force on
Measurements and Modelling (TFMM), Chemical Co-ordinating Centre (CCC),
Meteorological Synthesizing Centre-East (MSC-E), Meteorological Synthesizing
Centre-West (MSC-W), available at: http://hdl.handle.net/11250/2393346
(last access: 25 March 2017), 2016.
Conolly, C., Davies, M., Knight, D., Vincent, K., Sanocka, A., Lingard, J.,
Richie, S., Donovan, B., Collings, A., Braban, C., Tang, Y. S., Stephens, A.,
Twigg, M., Jones, M., Simmons, I., Coyle, C., Kentisbeer, J., Leeson, S., van
Dijk, N., Nemitz, E., Langford, B., Bealey, W., Leaver, D., Poskitt, J.,
Carter, H., Thacker, S., Patel, M., Keenan, P., Pereira, G., Lawlor, A.,
Warwick, A., Farrand, P., and Sutton, M. A.: UK Eutrophying and Acidifying
Atmospheric Pollutants (UKEAP) Annual Report 2015, UK Department for
Environment, Food & Rural Affairs, 2016.
Cowling, E. B., Erisman, J. W., Smeulders, S. M., Holman, S. C., and
Nicholson, B. M.: Optimizing air quality management in Europe and North
America: Justification for integrated management of both oxidized and reduced
forms of nitrogen, Environ. Poll., 102, 599–608,
https://doi.org/10.1016/S0269-7491(98)80088-2, 1998.
Dentener, F., Drevet, J., Lamarque, J. F., Bey, I., Eickhout, B., Fiore, A.
M., Hauglustaine, D., Horowitz, L. W., Krol, M., Kulshrestha, U. C.,
Lawrence, M., Galy-Lacaux, C., Rast, S., Shindell, D., Stevenson, D., Van
Noije, T., Atherton, C., Bell, N., Bergman, D., Butler, T., Cofala, J.,
Collins, B., Doherty, R., Ellingsen, K., Galloway, J., Gauss, M., Montanaro,
V., Müller, J. F., Pitari, G., Rodriguez, J., Sanderson, M., Solmon, F.,
Strahan, S., Schultz, M., Sudo, K., Szopa, S., and Wild, O.: Nitrogen and
sulfur deposition on regional and global scales: A multimodel evaluation,
Global Biogeochem. Cy., 20, GB4003, https://doi.org/10.1029/2005GB002672,
2006.
Dore, A. J., Carslaw, D. C., Braban, C., Cain, M., Chemel, C., Conolly, C.,
Derwent, R. G., Griffiths, S. J., Hall, J., Hayman, G., Lawrence, S.,
Metcalfe, S. E., Redington, A., Simpson, D., Sutton, M. A., Sutton, P., Tang,
Y. S., Vieno, M., Werner, M., and Whyatt, J. D.: Evaluation of the
performance of different atmospheric chemical transport models and
inter-comparison of nitrogen and sulphur deposition estimates for the UK,
Atmos. Environ., 119, 131–143,
https://doi.org/10.1016/j.atmosenv2015.08.008, 2015.
EEA: Air quality in Europe 2017, Report No 13/2017, available at:
https://www.eea.europa.eu/publications/air-quality-in-europe-2017, last
access: 22 March 2017.
EMEP: EMEP Manual for Sampling and Analysis, available at:
www.nilu.no/projects/ccc/manual/ (last access: 17 March 2017), 2014.
EMEP: Daily filter pack data of ammonia and ammonium (TIA) and nitric acid
and nitrate (TIN) for the Eskdalemuir EMEP site, available at:
http://ebas.nilu.no/, last access: 17 March 2017a.
EMEP: SO2 and SO42− data by daily bubbler and filter pack
method for the Eskdalemuir EMEP site, available at:
http://ebas.nilu.no/, last access: 17 March 2017b.
EU: Directive (EU) 2016/2284 of the European Parliament and of the Council of
14 December 2016 on the reduction of national emissions of certain
atmospheric pollutants, amending Directive 2003/35/EC and repealing Directive
2001/81/EC, 2016.
Evans, C. D., Monteith, D. T., Fowler, F., Cape, J. N., and Brayshaw, S.:
Hydrochloric Acid: An overlooked driver of environmental change, Environ.
Sci. Technol., 45, 1887–894, https://doi.org/10.1021/es103574u, 2011.
Ferm, M.: Method for determination of atmospheric ammonia, Atmos. Environ.,
13, 1385–1393, https://doi.org/10.1016/0004-6981(79)90107-0, 1979.
Ferm, M.: A Na2CO3-coated denuder and filter for determination
of gaseous HNO3 and particulate NO3− in the atmosphere,
Atmos. Environ., 20, 1193–1201,
https://doi.org/10.1016/0004-6981(86)90153-8, 1986.
Finn, D., Rumburg, B., Claiborn, C., Bamesberger, L., and Siems, W. F.:
Sampling artifacts from the use of denuder tubes with glycerol based coatings
in the measurement of atmospheric particulate matter, Environ. Sci. Technol.,
35, 40–44, https://doi.org/10.1021/es001325i, 2001.
Fitz, D. R.: Evaluation of Diffusion Denuder Coatings for Removing Acid Gases
from Ambient Air, Final Report, U.S. Environmental Protection Agency,
Riverside, 2002.
Flechard, C. R., Nemitz, E., Smith, R. I., Fowler, D., Vermeulen, A. T.,
Bleeker, A., Erisman, J. W., Simpson, D., Zhang, L., Tang, Y. S., and Sutton,
M. A.: Dry deposition of reactive nitrogen to European ecosystems: a
comparison of inferential models across the NitroEurope network, Atmos. Chem.
Phys., 11, 2703–2728, https://doi.org/10.5194/acp-11-2703-2011, 2011.
Fowler, D., Sutton, M. A., Flechard, C., Cape, J. N., Storeton-West, R.,
Coyle, M., and Smith, R. I.: The control of SO2 dry deposition on to
natural surfaces by NH3 and its effects on regional deposition, Water
Air Soil Poll., 1, 39–48, https://doi.org/10.1023/A:1013161912231, 2001.
Fowler, D., Pilegaard, K., Sutton, M. A., Ambus, P., Raivonen, M., Duyzer,
J., Simpson, D., Fagerli, H., Fuzzi, S., Schjoerring, J. M., Granier, C.,
Neftel, A., Isaksen, I. S. A., Laj, P., Maione, M., Monks, P. S., Burkhardt,
J., Daemmgen, U., Neirynck, J., Personne, E., Wichink-Kruit, R.,
Butterbach-Bahl, K., Flechard, C., Tuovinen, J. P., Coyle, M., Gerosa, G.,
Loubet, B., Altimir, N., Gruenhage, L., Ammann, C., Cieslik, S., Paoletti,
E., Mikkelsen, T. N., Ro-Poulsen, H., Cellier, P., Cape, J. N., Horváth,
L., Loreto, F., Niinemets, Ü., Palmer, P. I., Rinne, J., Misztal, P.,
Nemitz, E., Nilsson, D., Pryor, S., Gallagher, M. W., Vesala, T., Skiba, U.,
Brüggemann, N., Zechmeister-Boltenstern, S., Williams, J., O'Dowd, C.,
Facchini, M. C., de Leeuw, G., Flossman, A., Chaumerliac, N., and Erisman, J.
W.: Atmospheric composition change: Ecosystems–Atmosphere interactions,
Atmos. Environ., 43, 5193–5267,
https://doi.org/10.1016/j.atmosenv.2009.07.068, 2009.
Gilbert, R. O.: Statistical methods for environmental pollution monitoring,
New York, John Wiley & Sons, 1987.
Gormley, P. and Kennedy, M.: Diffusion from a stream flowing through a
cylindrical tube, P. Roy. Irish Acad. A, 52, 163–169, 1948.
Gregor, H.-D., Nagel, H.-D., and Posch, M.: The UN/ECE International
Programme on Mapping Critical Loads and Levels, Water Air Soil Poll., 1,
5–19, https://doi.org/10.1023/a:1011503115918, 2001.
Hall, J. and Smith, R.: Trends in critical load exceedances in the UK – CEH
Report to Defra, prepared under contract AQ0826, version 02/06/16, 35 pp.,
available at:
http://www.cldm.ceh.ac.uk/sites/cldm.ceh.ac.uk/files/TrendsReport_June2015_WEB.pdf
(last access: 25 January 2018), 2016.
Hallsworth, S., Dore, A. J., Bealey, W. J., Dragosits, U., Vieno, M.,
Hellsten, S., Tang, Y. S., and Sutton, M. A.: The role of indicator choice in
quantifying the threat of atmospheric ammonia to the “Natura 2000” network,
Environ. Sci. Policy, 13, 671–687,
https://doi.org/10.1016/j.envsci.2010.09.010, 2010.
Hayman, G., Vincent, K. J., Lawrence, H., Smith, M., Davies, M., Sutton, M.,
Tang, Y. S., Dragosits, U., Love, L., Fowler, D., Kendall, M., and Page, H.:
Management and Operation of the UK Acid Deposition Monitoring Network: Data
Summary for 2004, Department for Environment, Food and Rural Affairs, the
Scottish Executive, the Welsh Assembly Government, Department of the
Environment Northern Ireland, AEAT/ENV/R/2093 Issue 1, AEA Technology plc,
The Gemini Building, Fermi Avenue, Harwell, 2005.
Hayman, G., Lawrence, H., Vincent, K., Smith, M., Davies, M., Colbeck, C.,
Hasler, S., Baker, S., Stedman, J., Sansom, L., Page, H., and Kendall, M.:
Rural Sulphur Dioxide Monitoring in the UK: Data Summary 2001–2005, Report
ref: ED48204, AEAT/ENV/R/2292 Issue 1, 2006.
Hayman, G. D., Vincent, K., Lawrence, H., Smith, M., Colbeck, C., Davies, M.,
Sutton, M. A., Tang, Y. S., Dragosits, U., Love, L., Fowler, D., Kendall, M.,
and Page, H.: Management and Operation of the UK Acid Deposition Monitoring
Network: Data Summary for 2005, AEA Energy & Environment Report
AEAT/ENV/R/2342 Issue 1, AEA Technology plc, The Gemini Building, Fermi
Avenue, Harwell, 2007.
Horvath, L., Fagerli, H., and Sutton, M. A.: Long-Term Record
(1981–2005) of Ammonia and Ammonium Concentrations at
K-Puszta Hungary and the Effect of Sulphur Dioxide Emission
Change on Measured and Modelled Concentrations, Atmospheric
Ammonia, edited by: Sutton, M. A., Reis, S., and Baker,
S. M. H., Springer, Heidelberg Germany, 181–185, 2009.
Ianniello, A., Spataro, F., Esposito, G., Allegrini, I., Hu, M., and Zhu, T.:
Chemical characteristics of inorganic ammonium salts in PM2.5 in the
atmosphere of Beijing (China), Atmos. Chem. Phys., 11, 10803–10822,
https://doi.org/10.5194/acp-11-10803-2011, 2011.
Jones, A. M. and Harrison, R. M.: Temporal trends in sulphate concentrations
at European sites and relationships to sulphur dioxide, Atmos. Environ., 45,
873–882, https://doi.org/10.1016/j.atmosenv.2010.11.020, 2011.
Keene, W. C., Pszenny, A. A. P., Galloway, J. N., and Hawley, M. E.: Sea salt
corrections and interpretation of constitutent ratios in marine
precipitation, J. Geophys. Res., 91, 6647–6658,
https://doi.org/10.1029/JD091iD06p06647, 1986.
Kitto, A.-M. N. and Harrison, R. M.: Nitrous and nitric acid measurements at
sites in South-East England, Atmos. Environ., 26, 235–241,
https://doi.org/10.1016/0960-1686(92)90305-5, 1992.
Marchetto, A., Rogora, M., and Arisci, S.: Trend analysis of atmospheric
deposition data: A comparison of statistical approaches, Atmos. Environ., 64,
95–102, https://doi.org/10.1016/j.atmosenv.2012.08.020, 2013.
Meals, D. W., Spooner, J., Dressing, S. A., and Harcum, J. B.: Statistical
analysis for monotonic trends, TechNotes 6, National Nonpoint Source
Monitoring Program, U.S. Environmental Protection Agency, 23 pp., available
at:
https://www.epa.gov/sites/production/files/2016-05/documents/tech_notes_6_dec2013_trend.pdf
(last access: 20 March 2017), 2011.
McLeod, A. I.: Package “Kendall”, version 2.2, Kendall rank correlation and
Mann-Kendall trend test, available at:
https://cran.r-project.org/web/packages/Kendall/Kendall.pdf (last
access: 17 February 2017), 2015.
Mihalopoulos, N., Kerminen, V. M., Kanakidou, M., Berresheim, H., and Sciare,
J.: Formation of particulate sulfur species (sulfate and methanesulfonate)
during summer over the Eastern Mediterranean: A modelling approach, Atmos.
Environ., 41, 6860–6871, https://doi.org/10.1016/j.atmosenv.2007.04.039,
2007.
Monteith, D., Henrys, P., Banin, L., Smith, R., Morecroft, M., Scott, T.,
Andrews, C., Beaumont, D., Benham, S., Bowmaker, V., Corbett, S., Dick, J.,
Dodd, B., Dodd, N., McKenna, C., McMillan, S., Pallett, D., Pereira, M. G.,
Poskitt, J., Rennie, S., Rose, R., Schäfer, S., Sherrin, L., Tang, S.,
Turner, A., and Watson, H.: Trends and variability in weather and atmospheric
deposition at UK Environmental Change Network sites (1993–2012), Ecol.
Indic., 68, 21–35, https://doi.org/10.1016/j.ecolind.2016.01.061, 2016.
NAEI: UK emissions data selector, National Atmospheric Emissions Inventory,
available at:
http://naei.beis.gov.uk/data/data-selector-results?q=101505)?, last
access: 19 September 2018.
O'Dowd, C. D. and de Leeuw, G.: Marine aerosol production: a review of the
current knowledge, Phil. Trans. R. Soc. A, 365, 1753–1774,
https://doi.org/10.1098/rsta.2007.2043, 2007.
Perrino, C., De Santis, F., and Febo, A.: Criteria for the choice of a
denuder sampling technique devoted to the measurement of atmospheric nirous
and nitric acids, Atmos. Environ., 24, 617–626,
https://doi.org/10.1016/0960-1686(90)90017-H, 1990.
Pio, C.: Measurement of ammonia an ammonium in the atmosphere by denuder and
filter pack methods, Evaluation of the Rome Field Intercomparison Exercise,
Development of Analytical Techniques for Atmospheric Pollutants, Air
Pollution Research Report, 41, 239–252, 1992.
Pohlert, T.: Package “Trend”, version 0.2.0: Non-Parametric Trend Tests and
Change-Point Detection, available at:
https://cran.r-project.org/web/packages/trend/trend.pdf (last access:
10 October 2018), 2016.
Pope, R. J., Butt, E. W., Chipperfield, M. P., Doherty, R. M., Fenech, S.,
Schmidt, A., Arnold, S. R., and Savage, N. H.: The impact of synoptic weather
on UK surface ozone and implications for premature mortality, Environ. Res.
Lett., 11, 124004, https://doi.org/10.1088/1748-9326/11/12/124004, 2016.
Possanzini, M., Febo, A., and Liberti, A.: New design of a high-performance
denuder for the sampling of atmospheric pollutants, Atmos. Environ., 17,
2605–2610, https://doi.org/10.1016/0004-6981(83)90089-6, 1983.
Putaud, J. P., Van Dingenen, R., Alastuey, A., Bauer, H., Birmili, W., Cyrys,
J., Flentje, H., Fuzzi, S., Gehrig, R., Hansson, H. C., and Harrison, R. M.:
A European aerosol phenomenology–3: Physical and chemical characteristics of
particulate matter from 60 rural, urban, and kerbside sites across Europe,
Atmos. Environ., 44, 1308–1320,
https://doi.org/10.1016/j.atmosenv.2009.12.011, 2010.
ROTAP: Review of Transboundary Air Pollution: Acidification, Eutrophication,
Ground Level Ozone and Heavy Metals in the UK, Contract Report to the
Department for Environment, Food and Rural Affairs, Centre for Ecology &
Hydrology, available at: http://www.rotap.ceh.ac.uk/ (last access: 30 March 2018),
2012.
Roth, B. and Okada, K.: On the modification of sea-salt particles in the
coastal atmosphere, Atmos. Environ., 32, 1555–1569, 1998.
Rumsey, I. C. and Walker, J. T.: Application of an online
ion-chromatography-based instrument for gradient flux measurements of
speciated nitrogen and sulfur, Atmos. Meas. Tech., 9, 2581–2592,
https://doi.org/10.5194/amt-9-2581-2016, 2016.
Schmitt, A.-D. and Stille, P.: The source of calcium in wet atmospheric
deposits: Ca-Sr isotope evidence, Geochim. Cosmochim. Ac., 69, 3463–3468,
https://doi.org/10.1016/j.gca.2004.11.010, 2005.
Schrader, F., Schaap, M., Zöll, U., Kranenburg, R., and Brümmer, C.:
The hidden cost of using low resolution concentration data in the estimation
of NH3 dry deposition fluxes, Sci. Rep., 8, 969,
https://doi.org/10.1038/s41598-017-18021-6, 2018.
Sickles, I. J. E., Hodson, L. L., and Vorburger, L. M.: Evaluation of the
filter pack for long-duration sampling of ambient air, Atmos. Environ., 33,
2187–2202, https://doi.org/10.1016/S1352-2310(98)00425-7, 1999.
Smith, R. I., Fowler, D., Sutton, M. A., Flechard, C., and Coyle, M.:
Regional estimation of pollutant gas dry deposition in the UK: model
description, sensitivity analyses and outputs, Atmos. Environ., 34,
3757–3777, https://doi.org/10.1016/s1352-2310(99)00517-8, 2000.
Steinle, S.: Report on work placement at the Centre for Ecology and Hydrology
(CEH), Edinburgh, 01/09/2008–28/02/2009, 2009.
Stelson, A. W. and Seinfeld, J. H.: Relative humidity and temperature
dependence of the ammonium nitrate dissociation constant, Atmos. Environ.,
16, 983–992, https://doi.org/10.1016/0004-6981(82)90184-6, 1982.
Sutton, M. A., Tang, Y. S., Dragosits, U., Fournier, N., Dore, A. J., Smith,
R. I., Weston, K. J., and Fowler, D.: A spatial analysis of atmospheric
ammonia and ammonium in the UK, Sci. World J., 28, 275–286,
https://doi.org/10.1100/tsw.2001.313, 2001a.
Sutton, M. A., Tang, Y. S., Miners, B., and Fowler, D.: A new diffusion
denuder system for long-term, regional monitoring of atmospheric ammonia and
ammonium, Water Air Soil Poll., 1, 145–156,
https://doi.org/10.1023/A:1013138601753, 2001b.
Sutton, M. A., Nemitz, E., Erisman, J. W., Beier, C., Bahl, K. B., Cellier,
P., de Vries, W., Cotrufo, F., Skiba, U., Di Marco, C., Jones, S., Laville,
P., Soussana, J. F., Loubet, B., Twigg, M., Famulari, D., Whitehead, J.,
Gallagher, M. W., Neftel, A., Flechard, C. R., Herrmann, B., Calanca, P. L.,
Schjoerring, J. K., Daemmgen, U., Horvath, L., Tang, Y. S., Emmett, B. A.,
Tietema, A., Penuelas, J., Kesik, M., Brueggemann, N., Pilegaard, K., Vesala,
T., Campbell, C. L., Olesen, J. E., Dragosits, U., Theobald, M. R., Levy, P.,
Mobbs, D. C., Milne, R., Viovy, N., Vuichard, N., Smith, J. U., Smith, P.,
Bergamaschi, P., Fowler, D., and Reis, S.: Challenges in quantifying
biosphere-atmosphere exchange of nitrogen species, Environ. Poll., 150,
125–139, https://doi.org/10.1016/j.envpol.2007.04.014, 2007.
Sutton, M. A., Oenema, O., Erisman, J. W., Leip, A., van Grinsven, H., and
Winiwarter. W.: Too much of a good thing, Nature, 472, 159–161,
https://doi.org/10.1038/472159a, 2011.
Tang, Y. S. and Sutton, M. A.: Quality management in the UK national ammonia
monitoring network, in: Proceedings of the International Conference: QA/QC in
the field of emission and air quality measurements: harmonization,
standardization and accreditation, Prague, 21–23 May 2003, edited by:
Borowiak, A., Hafkenscheid, T., Saunders, A., and Woods, P., European
Commission, Ispra, Italy, 297–307, 2003.
Tang, Y. S., Simmons, I., van Dijk, N., Di Marco, C., Nemitz, E., Dammgen,
U., Gilke, K., Djuricic, V., Vidic, S., Gliha, Z., Borovecki, D.,
Mitosinkova, M., Hanssen, J. E., Uggerud, T. H., Sanz, M. J., Sanz, P.,
Chorda, J. V., Flechard, C. R., Fauvel, Y., Ferm, M., Perrino, C., and
Sutton, M. A.: European scale application of atmospheric reactive nitrogen
measurements in a low-cost approach to infer dry deposition fluxes, Agr.
Ecosyst. Environ., 133, 183–195, https://doi.org/10.1016/j.agee.2009.04.027,
2009.
Tang, Y. S., Cape, J. N., Braban, C. F., Twigg, M. M., Poskitt, J., Jones, M.
R., Rowland, P., Bentley, P., Hockenhull, K., Woods, C., Leaver, D., Simmons,
I., van Dijk, N., Nemitz, E., and Sutton, M. A.: Development of a new model
DELTA sampler and assessment of potential sampling artefacts in the UKEAP
AGANet DELTA system: summary and technical report, London, Defra, CEH Project
no. C04544, C04845, available at:
https://uk-air.defra.gov.uk/library/reports?report_id=861 (last access: 20 October 2018),
2015.
Tang, Y. S., Braban, C. F., Dragosits, U., Dore, A. J., Simmons, I., van
Dijk, N., Poskitt, J., Dos Santos Pereira, G., Keenan, P. O., Conolly, C.,
Vincent, K., Smith, R. I., Heal, M. R., and Sutton, M. A.: Drivers for
spatial, temporal and long-term trends in atmospheric ammonia and ammonium in
the UK, Atmos. Chem. Phys., 18, 705–733,
https://doi.org/10.5194/acp-18-705-2018, 2018.
Tang, Y. S., Poskitt, J., Cape, J. N., Nemitz, E., Bealey,W. J., Leaver, D.,
Beith, S., Thacker, S., Simmons, I., Letho, K., Wood, C., Pereira, G.,
Sutton, M. A., Davies, M., Conolly, C., Donovan, B., and Braban, C. F.: UK
Eutrophying and Acidifying Atmospheric Pollutant project's Acid Gas and
Aerosol Network (Data funded by Defra and the Devolved Administrations and
published under the Open Government Licence v1.0, AGANet, available at:
http://uk-air.defra.gov.uk/networks/network-info?view=ukeap, last
access: 23 March 2017a.
Tang, Y. S., Poskitt, J., Cape, J. N., Nemitz, E., Bealey,W. J., Leaver, D.,
Simmons, I., Wood, C., Pereira, G., Sutton, M. A., Davies, M., Conolly, C.,
Donovan, B., and Braban, C. F.: UK Eutrophying and Acidifying Atmospheric
Pollutant project's National Ammonia Monitoring Network (Data funded by Defra
and the Devolved Administrations and published under the Open Government
Licence v1.0), NAMN, available at:
https://uk-air.defra.gov.uk/networks/network-info?view=nh3, last
access: 23 March 2017b.
Tørseth, K., Aas, W., Breivik, K., Fjæraa, A. M., Fiebig, M.,
Hjellbrekke, A. G., Lund Myhre, C., Solberg, S., and Yttri, K. E.:
Introduction to the European Monitoring and Evaluation Programme (EMEP) and
observed atmospheric composition change during 1972–2009, Atmos. Chem.
Phys., 12, 5447–5481, https://doi.org/10.5194/acp-12-5447-2012, 2012.
Twigg, M. M., Ilyinskaya, E., Beccaceci, S., Green, D. C., Jones, M. R.,
Langford, B., Leeson, S. R., Lingard, J. J. N., Pereira, G. M., Carter, H.,
Poskitt, J., Richter, A., Ritchie, S., Simmons, I., Smith, R. I., Tang, Y.
S., Van Dijk, N., Vincent, K., Nemitz, E., Vieno, M., and Braban, C. F.:
Impacts of the 2014–2015 Holuhraun eruption on the UK atmosphere, Atmos.
Chem. Phys., 16, 11415–11431, https://doi.org/10.5194/acp-16-11415-2016,
2016.
UNECE: Protocol to Abate Acidification, Eutrophication and Ground-level
Ozone, the 1999 Gothenburg Protocol to Abate Acidification, Eutrophication
and Ground-level Ozone, available at:
http://www.unece.org/env/lrtap/multi_h1.html, last access: March 2018.
Vieno, M., Heal, M. R., Hallsworth, S., Famulari, D., Doherty, R. M., Dore,
A. J., Tang, Y. S., Braban, C. F., Leaver, D., Sutton, M. A., and Reis, S.:
The role of long-range transport and domestic emissions in determining
atmospheric secondary inorganic particle concentrations across the UK, Atmos.
Chem. Phys., 14, 8435–8447, https://doi.org/10.5194/acp-14-8435-2014, 2014.
Vieno, M., Heal, M. R., Twigg, M. M., MacKenzie, I. A., Braban, C. F.,
Lingard, J. N. N., Ritchie, S., Beck, R. C., Móring, A., Ots, R., Di
Marco, C. F., Nemitz, E., Sutton M. A., and Reis, S.: The UK particulate
matter air pollution episode of March–April 2014: more than Saharan dust,
Environ. Res. Lett., 11, 044004,
https://doi.org/10.1088/1748-9326/11/4/044004, 2016.
Werner, M., Kryza, M., Dore, A. J., Blas, M., Hallsworth, S., Vieno, M.,
Tang, Y. S., and Smith, R. I.: Modelling of marine base cation emissions,
concentrations and deposition in the UK, Atmos. Chem. Phys., 11, 1023–1037,
https://doi.org/10.5194/acp-11-1023-2011, 2011.
Short summary
A unique long-term dataset (1999–2015) of atmospheric gases (HNO3, SO2, HCl, NH3) and aerosol (NO3-, SO42-, Cl-, NH4+, Na+, Ca2+, Mg2+) from two integrated UK networks (>12 sites) was analysed to assess spatial, temporal, and long-term trends. A change in particulate phase from (NH4)2SO4 to NH4NO3 is seen, with indications that a larger fraction of the reduced and oxidized N is remaining in the gas phase. Key pollutant events captured highlight influence of trans-boundary transport into the UK.
A unique long-term dataset (1999–2015) of atmospheric gases (HNO3, SO2, HCl, NH3) and aerosol...
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