Articles | Volume 16, issue 3
https://doi.org/10.5194/acp-16-1331-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-1331-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
08 Feb 2016
Research article |
| 08 Feb 2016
On the long-term impact of emissions from central European cities on regional air quality
Department of Atmospheric Physics, Faculty of Mathematics and Physics, Charles University, Prague, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Department of Atmospheric Physics, Faculty of Mathematics and Physics, Charles University, Prague, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
T. Halenka
Department of Atmospheric Physics, Faculty of Mathematics and Physics, Charles University, Prague, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
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The paper shows how extreme meteorological conditions change due to the urban land-cover forcing and how this translates to the impact on the extreme air pollution over central European cities. It focuses on ozone, nitrogen dioxide, and particulate matter with a diameter of less than 2.5 μm and shows that, while for the extreme daily maximum 8 h ozone, changes are same as for the mean ones, much larger modifications are calculated for extreme NO2 and PM2.5 compared to their mean changes.
Peter Huszar, Jan Karlický, Jana Ďoubalová, Kateřina Šindelářová, Tereza Nováková, Michal Belda, Tomáš Halenka, Michal Žák, and Petr Pišoft
Atmos. Chem. Phys., 20, 1977–2016, https://doi.org/10.5194/acp-20-1977-2020, https://doi.org/10.5194/acp-20-1977-2020, 2020
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Urban surfaces alter meteorological conditions which consequently alter air pollution due to modified transport and chemical reactions. Here, we focus on a major component of this influence, enhanced vertical eddy diffusion. Using a regional climate model coupled to a chemistry transport model, we investigate how different representations of turbulent transport translate to urban canopy impact on ozone and PM2.5 concentrations and whether turbulence remains the most important component.
Peter Huszar, Michal Belda, Jan Karlický, Tatsiana Bardachova, Tomas Halenka, and Petr Pisoft
Atmos. Chem. Phys., 18, 14059–14078, https://doi.org/10.5194/acp-18-14059-2018, https://doi.org/10.5194/acp-18-14059-2018, 2018
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The impact of meteorological changes introduced by urbanization on aerosol concentration using a regional climate model and a chemistry transport model over central Europe is investigated. We found a strong increase of temperature and turbulence and a decrease of humidity and wind speed due to urban surfaces. This resulted in a clear decrease of aerosol concentrations near the surface: PM2.5 concentrations were reduced by 3 μg/m3. The dominating effect is the increased turbulent transport.
Jan Karlický, Peter Huszár, Tomáš Halenka, Michal Belda, Michal Žák, Petr Pišoft, and Jiří Mikšovský
Atmos. Chem. Phys., 18, 10655–10674, https://doi.org/10.5194/acp-18-10655-2018, https://doi.org/10.5194/acp-18-10655-2018, 2018
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Our work presents a comparison of modelled and observed urban-induced meteorological changes in long-term perspective using 10-year simulations. It contains an evaluation of models' urban parameterizations, investigations of the benefits of more sophisticated urban parameterizations with respect to simple approaches and evaluation of urban-induced meteorological changes from the perspective of pollutant dispersion.
Petr Pisoft, Petr Sacha, Jiri Miksovsky, Peter Huszar, Barbara Scherllin-Pirscher, and Ulrich Foelsche
Atmos. Meas. Tech., 11, 515–527, https://doi.org/10.5194/amt-11-515-2018, https://doi.org/10.5194/amt-11-515-2018, 2018
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We revise selected findings regarding utilization of Global Positioning System radio occultation density profiles for analysis of internal gravity waves. The results show that previously published results are valid only for one specific data version only. Using radiosonde profiles, we also analyze a nonhydrostatic component in temperature profiles. The last part presents detailed study on the utilization of density profiles for characterization of the wave field stability.
Jaroslav Resler, Pavel Krč, Michal Belda, Pavel Juruš, Nina Benešová, Jan Lopata, Ondřej Vlček, Daša Damašková, Kryštof Eben, Přemysl Derbek, Björn Maronga, and Farah Kanani-Sühring
Geosci. Model Dev., 10, 3635–3659, https://doi.org/10.5194/gmd-10-3635-2017, https://doi.org/10.5194/gmd-10-3635-2017, 2017
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A realistic numerical modelling of urban climate still poses a serious challenge. The paper describes a new urban surface model (USM), integrated into large-eddy simulation model PALM. The USM covers the most important urban canopy processes (e.g. radiation, energy balance on surfaces, thermal diffusion). The model was tested in the real conditions of a city and shows good agreement with observations. The USM is optimized for high-performance computing systems and is freely available.
Jan Karlický, Peter Huszár, and Tomáš Halenka
Adv. Sci. Res., 14, 181–186, https://doi.org/10.5194/asr-14-181-2017, https://doi.org/10.5194/asr-14-181-2017, 2017
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The article describes ability of the numerical atmospheric model WRF-Chem to predict concentrations of main gas pollutants over Europe. Model experiments showed that daily and annual cycles of ozone are well captured, but the model concentrations of nitride dioxide and sulfur dioxide are significantly lower than measured values. The differences between two chemical modules are significant in term of ozone daily cycle, not in the total amount of nitride and sulfur dioxide.
Peter Huszár, Michal Belda, Jan Karlický, Petr Pišoft, and Tomáš Halenka
Atmos. Chem. Phys., 16, 12993–13013, https://doi.org/10.5194/acp-16-12993-2016, https://doi.org/10.5194/acp-16-12993-2016, 2016
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Using an online coupled system of a regional climate model and chemistry transport model we investigated the radiative/climate impact of short-lived pollutants directly emitted by urban areas and those secondarily formed, focusing on the area of central Europe. We found that the direct/indirect effects of aerosols dominate, causing small but statistically significant cooling in summer and winter (up to −0.04 K). The radiative impact of ozone changes remains negligible.
P. Huszar, T. Halenka, M. Belda, M. Zak, K. Sindelarova, and J. Miksovsky
Atmos. Chem. Phys., 14, 12393–12413, https://doi.org/10.5194/acp-14-12393-2014, https://doi.org/10.5194/acp-14-12393-2014, 2014
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The impact of cities and urban surfaces on climate of central Europe is examined using a regional climate model coupled to a single-layer urban canopy model. Results show a significant impact on temperature (up to 1.5K increase in summer), the boundary layer height, surface wind with a winter decrease and precipitation (a summer decrease). Applying the urban canopy model, the regional climate model exhibits a decreased model bias when compared to observations.
P. Ricaud, B. Sič, L. El Amraoui, J.-L. Attié, R. Zbinden, P. Huszar, S. Szopa, J. Parmentier, N. Jaidan, M. Michou, R. Abida, F. Carminati, D. Hauglustaine, T. August, J. Warner, R. Imasu, N. Saitoh, and V.-H. Peuch
Atmos. Chem. Phys., 14, 11427–11446, https://doi.org/10.5194/acp-14-11427-2014, https://doi.org/10.5194/acp-14-11427-2014, 2014
P. Huszar, H. Teyssèdre, M. Michou, A. Voldoire, D. J. L. Olivié, D. Saint-Martin, D. Cariolle, S. Senesi, D. Salas Y Melia, A. Alias, F. Karcher, P. Ricaud, and T. Halenka
Atmos. Chem. Phys., 13, 10027–10048, https://doi.org/10.5194/acp-13-10027-2013, https://doi.org/10.5194/acp-13-10027-2013, 2013
Related subject area
Subject: Gases | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Ozone source attribution in polluted European areas during summer 2017 as simulated with MECO(n)
Opinion: Challenges and needs of tropospheric chemical mechanism development
The atmospheric oxidizing capacity in China – Part 2: Sensitivity to emissions of primary pollutants
Role of chemical production and depositional losses on formaldehyde in the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM)
Review of source analyses of ambient volatile organic compounds considering reactive losses: methods of reducing loss effects, impacts of losses, and sources
Interpreting summertime hourly variation of NO2 columns with implications for geostationary satellite applications
An investigation into atmospheric nitrous acid (HONO) processes in South Korea
Performance evaluation of UKESM1 for surface ozone across the pan-tropics
Constraining light dependency in modeled emissions through comparison to observed biogenic volatile organic compound (BVOC) concentrations in a southeastern US forest
A global re-analysis of regionally resolved emissions and atmospheric mole fractions of SF6 for the period 2005–2021
Tropospheric ozone precursors: global and regional distributions, trends, and variability
The contribution of transport emissions to ozone mixing ratios and methane lifetime in 2015 and 2050 in the Shared Socioeconomic Pathways (SSPs)
Ether and ester formation from peroxy radical recombination: a qualitative reaction channel analysis
ACEIC: a comprehensive anthropogenic chlorine emission inventory for China
Impact of methane and other precursor emission reductions on surface ozone in Europe: scenario analysis using the European Monitoring and Evaluation Programme (EMEP) Meteorological Synthesizing Centre – West (MSC-W) model
Verifying national inventory-based combustion emissions of CO2 across the UK and mainland Europe using satellite observations of atmospheric CO and CO2
An improved estimate of inorganic iodine emissions from the ocean using a coupled surface microlayer box model
Impact of improved representation of volatile organic compound emissions and production of NOx reservoirs on modeled urban ozone production
The effect of different climate and air quality policies in China on in situ ozone production in Beijing
Evaluating present-day and future impacts of agricultural ammonia emissions on atmospheric chemistry and climate
Enhancing long-term trend simulation of the global tropospheric hydroxyl (TOH) and its drivers from 2005 to 2019: a synergistic integration of model simulations and satellite observations
Intercomparison of GEOS-Chem and CAM-chem tropospheric oxidant chemistry within the Community Earth System Model version 2 (CESM2)
Development of a detailed gaseous oxidation scheme of naphthalene for secondary organic aerosol (SOA) formation and speciation
Air pollution satellite-based CO2 emission inversion: system evaluation, sensitivity analysis, and future perspective
Large contributions of soil emissions to the atmospheric nitrogen budget and their impacts on air quality and temperature rise in North China
Why did ozone concentrations remain high during Shanghai's static management? A statistical and radical-chemistry perspective
Impact of introducing electric vehicles on ground-level O3 and PM2.5 in the Greater Tokyo Area: Yearly trends and the importance of changes in the Urban Heat Island effect
Revising VOC emissions speciation improves the simulation of global background ethane and propane
Changes in South American surface ozone trends: exploring the influences of precursors and extreme events
Evaluating NOx stack plume emissions using a high-resolution atmospheric chemistry model and satellite-derived NO2 columns
NOx emissions in France in 2019–2021 as estimated by the high-spatial-resolution assimilation of TROPOMI NO2 observations
Urban ozone formation and sensitivities to volatile chemical products, cooking emissions, and NOx across the Los Angeles Basin
Aggravated surface O3 pollution primarily driven by meteorological variations in China during the 2020 COVID-19 pandemic lockdown period
Identifying decadal trends in deweathered concentrations of criteria air pollutants in Canadian urban atmospheres with machine learning approaches
Evaluation of modelled versus observed non-methane volatile organic compounds at European Monitoring and Evaluation Programme sites in Europe
Constraining non-methane VOC emissions with TROPOMI HCHO observations: impact on summertime ozone simulation in August 2022 in China
Insights on ozone pollution control in urban areas by decoupling meteorological factors based on machine learning
Revealing the significant acceleration of hydrofluorocarbon (HFC) emissions in eastern Asia through long-term atmospheric observations
Interpreting Geostationary Environment Monitoring Spectrometer (GEMS) geostationary satellite observations of the diurnal variation in nitrogen dioxide (NO2) over East Asia
An intercomparison of satellite, airborne, and ground-level observations with WRF–CAMx simulations of NO2 columns over Houston, Texas, during the September 2021 TRACER-AQ campaign
Investigating processes influencing simulation of local Arctic wintertime anthropogenic pollution in Fairbanks, Alaska during ALPACA-2022
Interannual variability of summertime formaldehyde (HCHO) vertical column density and its main drivers at northern high latitudes
The impact of multi-decadal changes in VOC speciation on urban ozone chemistry: a case study in Birmingham, United Kingdom
Technical note: Challenges in detecting free tropospheric ozone trends in a sparsely sampled environment
Combined assimilation of NOAA surface and MIPAS satellite observations to constrain the global budget of carbonyl sulfide
The impact of gaseous degradation on the gas–particle partitioning of methylated polycyclic aromatic hydrocarbons
Technical note: An assessment of the performance of statistical bias correction techniques for global chemistry–climate model surface ozone fields
A better representation of volatile organic compound chemistry in WRF-Chem and its impact on ozone over Los Angeles
High-resolution US methane emissions inferred from an inversion of 2019 TROPOMI satellite data: contributions from individual states, urban areas, and landfills
Summertime tropospheric ozone source apportionment study in the Madrid region (Spain)
Markus Kilian, Volker Grewe, Patrick Jöckel, Astrid Kerkweg, Mariano Mertens, Andreas Zahn, and Helmut Ziereis
Atmos. Chem. Phys., 24, 13503–13523, https://doi.org/10.5194/acp-24-13503-2024, https://doi.org/10.5194/acp-24-13503-2024, 2024
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Anthropogenic emissions are a major source of precursors of tropospheric ozone. As ozone formation is highly non-linear, we apply a global–regional chemistry–climate model with a source attribution method (tagging) to quantify the contribution of anthropogenic emissions to ozone. Our analysis shows that the contribution of European anthropogenic emissions largely increases during large ozone periods, indicating that emissions from these sectors drive ozone values.
Barbara Ervens, Andrew Rickard, Bernard Aumont, William P. L. Carter, Max McGillen, Abdelwahid Mellouki, John Orlando, Bénédicte Picquet-Varrault, Paul Seakins, William R. Stockwell, Luc Vereecken, and Timothy J. Wallington
Atmos. Chem. Phys., 24, 13317–13339, https://doi.org/10.5194/acp-24-13317-2024, https://doi.org/10.5194/acp-24-13317-2024, 2024
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Chemical mechanisms describe the chemical processes in atmospheric models that are used to describe the changes in the atmospheric composition. Therefore, accurate chemical mechanisms are necessary to predict the evolution of air pollution and climate change. The article describes all steps that are needed to build chemical mechanisms and discusses the advances and needs of experimental and theoretical research activities needed to build reliable chemical mechanisms.
Jianing Dai, Guy P. Brasseur, Mihalis Vrekoussis, Maria Kanakidou, Kun Qu, Yijuan Zhang, Hongliang Zhang, and Tao Wang
Atmos. Chem. Phys., 24, 12943–12962, https://doi.org/10.5194/acp-24-12943-2024, https://doi.org/10.5194/acp-24-12943-2024, 2024
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This paper employs a regional chemical transport model to quantify the sensitivity of air pollutants and photochemical parameters to specified emission reductions in China for representative winter and summer conditions. The study provides insights into further air quality control in China with reduced primary emissions.
T. Nash Skipper, Emma L. D'Ambro, Forwood C. Wiser, V. Faye McNeill, Rebecca H. Schwantes, Barron H. Henderson, Ivan R. Piletic, Colleen B. Baublitz, Jesse O. Bash, Andrew R. Whitehill, Lukas C. Valin, Asher P. Mouat, Jennifer Kaiser, Glenn M. Wolfe, Jason M. St. Clair, Thomas F. Hanisco, Alan Fried, Bryan K. Place, and Havala O.T. Pye
Atmos. Chem. Phys., 24, 12903–12924, https://doi.org/10.5194/acp-24-12903-2024, https://doi.org/10.5194/acp-24-12903-2024, 2024
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We develop the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM) version 2 to improve predictions of formaldehyde in ambient air compared to satellite-, aircraft-, and ground-based observations. With the updated chemistry, we estimate the cancer risk from inhalation exposure to ambient formaldehyde across the contiguous USA and predict that 40 % of this risk is controllable through reductions in anthropogenic emissions of nitrogen oxides and reactive organic carbon.
Baoshuang Liu, Yao Gu, Yutong Wu, Qili Dai, Shaojie Song, Yinchang Feng, and Philip K. Hopke
Atmos. Chem. Phys., 24, 12861–12879, https://doi.org/10.5194/acp-24-12861-2024, https://doi.org/10.5194/acp-24-12861-2024, 2024
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Reactive loss of volatile organic compounds (VOCs) is a long-term issue yet to be resolved in VOC source analyses. We assess common methods of, and existing issues in, reducing losses, impacts of losses, and sources in current source analyses. We offer a potential supporting role for solving issues of VOC conversion. Source analyses of consumed VOCs that reacted to produce ozone and secondary organic aerosols can play an important role in the effective control of secondary pollution in air.
Deepangsu Chatterjee, Randall V. Martin, Chi Li, Dandan Zhang, Haihui Zhu, Daven K. Henze, James H. Crawford, Ronald C. Cohen, Lok N. Lamsal, and Alexander M. Cede
Atmos. Chem. Phys., 24, 12687–12706, https://doi.org/10.5194/acp-24-12687-2024, https://doi.org/10.5194/acp-24-12687-2024, 2024
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We investigate the hourly variation of NO2 columns and surface concentrations by applying the GEOS-Chem model to interpret aircraft and ground-based measurements over the US and Pandora sun photometer measurements over the US, Europe, and Asia. Corrections to the Pandora columns and finer model resolution improve the modeled representation of the summertime hourly variation of total NO2 columns to explain the weaker hourly variation in NO2 columns than at the surface.
Kiyeon Kim, Kyung Man Han, Chul Han Song, Hyojun Lee, Ross Beardsley, Jinhyeok Yu, Greg Yarwood, Bonyoung Koo, Jasper Madalipay, Jung-Hun Woo, and Seogju Cho
Atmos. Chem. Phys., 24, 12575–12593, https://doi.org/10.5194/acp-24-12575-2024, https://doi.org/10.5194/acp-24-12575-2024, 2024
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We incorporated each HONO process into the current CMAQ modeling framework to enhance the accuracy of HONO mixing ratio predictions. These results expand our understanding of HONO photochemistry and identify crucial sources of HONO that impact the total HONO budget in Seoul, South Korea. Through this investigation, we contribute to resolving discrepancies in understanding chemical transport models, with implications for better air quality management and environmental protection in the region.
Flossie Brown, Gerd Folberth, Stephen Sitch, Paulo Artaxo, Marijn Bauters, Pascal Boeckx, Alexander W. Cheesman, Matteo Detto, Ninong Komala, Luciana Rizzo, Nestor Rojas, Ines dos Santos Vieira, Steven Turnock, Hans Verbeeck, and Alfonso Zambrano
Atmos. Chem. Phys., 24, 12537–12555, https://doi.org/10.5194/acp-24-12537-2024, https://doi.org/10.5194/acp-24-12537-2024, 2024
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Ozone is a pollutant that is detrimental to human and plant health. Ozone monitoring sites in the tropics are limited, so models are often used to understand ozone exposure. We use measurements from the tropics to evaluate ozone from the UK Earth system model, UKESM1. UKESM1 is able to capture the pattern of ozone in the tropics, except in southeast Asia, although it systematically overestimates it at all sites. This work highlights that UKESM1 can capture seasonal and hourly variability.
Namrata Shanmukh Panji, Deborah F. McGlynn, Laura E. R. Barry, Todd M. Scanlon, Manuel T. Lerdau, Sally E. Pusede, and Gabriel Isaacman-VanWertz
Atmos. Chem. Phys., 24, 12495–12507, https://doi.org/10.5194/acp-24-12495-2024, https://doi.org/10.5194/acp-24-12495-2024, 2024
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Climate change will bring about changes in parameters that are currently used in global-scale models to calculate biogenic emissions. This study seeks to understand the factors driving these models by comparing long-term datasets of biogenic compounds to modeled emissions. We note that the light-dependent fractions currently used in models do not accurately represent regional observations. We provide evidence for the time-dependent variation in this parameter for future modifications to models.
Martin Vojta, Andreas Plach, Saurabh Annadate, Sunyoung Park, Gawon Lee, Pallav Purohit, Florian Lindl, Xin Lan, Jens Mühle, Rona L. Thompson, and Andreas Stohl
Atmos. Chem. Phys., 24, 12465–12493, https://doi.org/10.5194/acp-24-12465-2024, https://doi.org/10.5194/acp-24-12465-2024, 2024
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We constrain the global emissions of the very potent greenhouse gas sulfur hexafluoride (SF6) between 2005 and 2021. We show that SF6 emissions are decreasing in the USA and in the EU, while they are substantially growing in China, leading overall to an increasing global emission trend. The national reports for the USA, EU, and China all underestimated their SF6 emissions. However, stringent mitigation measures can successfully reduce SF6 emissions, as can be seen in the EU emission trend.
Yasin Elshorbany, Jerald R. Ziemke, Sarah Strode, Hervé Petetin, Kazuyuki Miyazaki, Isabelle De Smedt, Kenneth Pickering, Rodrigo J. Seguel, Helen Worden, Tamara Emmerichs, Domenico Taraborrelli, Maria Cazorla, Suvarna Fadnavis, Rebecca R. Buchholz, Benjamin Gaubert, Néstor Y. Rojas, Thiago Nogueira, Thérèse Salameh, and Min Huang
Atmos. Chem. Phys., 24, 12225–12257, https://doi.org/10.5194/acp-24-12225-2024, https://doi.org/10.5194/acp-24-12225-2024, 2024
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We investigated tropospheric ozone spatial variability and trends from 2005 to 2019 and related those to ozone precursors on global and regional scales. We also investigate the spatiotemporal characteristics of the ozone formation regime in relation to ozone chemical sources and sinks. Our analysis is based on remote sensing products of the tropospheric column of ozone and its precursors, nitrogen dioxide, formaldehyde, and total column CO, as well as ozonesonde data and model simulations.
Mariano Mertens, Sabine Brinkop, Phoebe Graf, Volker Grewe, Johannes Hendricks, Patrick Jöckel, Anna Lanteri, Sigrun Matthes, Vanessa S. Rieger, Mattia Righi, and Robin N. Thor
Atmos. Chem. Phys., 24, 12079–12106, https://doi.org/10.5194/acp-24-12079-2024, https://doi.org/10.5194/acp-24-12079-2024, 2024
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We quantified the contributions of land transport, shipping, and aviation emissions to tropospheric ozone; its radiative forcing; and the reductions of the methane lifetime using chemistry-climate model simulations. The contributions were analysed for the conditions of 2015 and for three projections for the year 2050. The results highlight the challenges of mitigating ozone formed by emissions of the transport sector, caused by the non-linearitiy of the ozone chemistry and the long lifetime.
Lauri Franzon, Marie Camredon, Richard Valorso, Bernard Aumont, and Theo Kurtén
Atmos. Chem. Phys., 24, 11679–11699, https://doi.org/10.5194/acp-24-11679-2024, https://doi.org/10.5194/acp-24-11679-2024, 2024
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In this article we investigate the formation of large, sticky molecules from various organic compounds entering the atmosphere as primary emissions and the degree to which these processes may contribute to organic aerosol particle mass. More specifically, we qualitatively investigate a recently discovered chemical reaction channel for one of the most important short-lived radical compounds, peroxy radicals, and discover which of these reactions are most atmospherically important.
Siting Li, Yiming Liu, Yuqi Zhu, Yinbao Jin, Yingying Hong, Ao Shen, Yifei Xu, Haofan Wang, Haichao Wang, Xiao Lu, Shaojia Fan, and Qi Fan
Atmos. Chem. Phys., 24, 11521–11544, https://doi.org/10.5194/acp-24-11521-2024, https://doi.org/10.5194/acp-24-11521-2024, 2024
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This study establishes an inventory of anthropogenic chlorine emissions in China in 2019 with expanded species (HCl, Cl-, Cl2, HOCl) and sources (41 specific sources). The inventory is validated by a modeling study against the observations. This study enhances the understanding of anthropogenic chlorine emissions in the atmosphere, identifies key sources, and provides scientific support for pollution control and climate change.
Willem E. van Caspel, Zbigniew Klimont, Chris Heyes, and Hilde Fagerli
Atmos. Chem. Phys., 24, 11545–11563, https://doi.org/10.5194/acp-24-11545-2024, https://doi.org/10.5194/acp-24-11545-2024, 2024
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Methane in the atmosphere contributes to the production of ozone gas – an air pollutant and greenhouse gas. Our results highlight that simultaneous reductions in methane emissions help avoid offsetting the air pollution benefits already achieved by the already-approved precursor emission reductions by 2050 in the European Monitoring and Evaluation Programme region, while also playing an important role in bringing air pollution further down towards World Health Organization guideline limits.
Tia R. Scarpelli, Paul I. Palmer, Mark Lunt, Ingrid Super, and Arjan Droste
Atmos. Chem. Phys., 24, 10773–10791, https://doi.org/10.5194/acp-24-10773-2024, https://doi.org/10.5194/acp-24-10773-2024, 2024
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Under the Paris Agreement, countries must track their anthropogenic greenhouse gas emissions. This study describes a method to determine self-consistent estimates for combustion emissions and natural fluxes of CO2 from atmospheric data. We report consistent estimates inferred using this approach from satellite data and ground-based data over Europe, suggesting that satellite data can be used to determine national anthropogenic CO2 emissions for countries where ground-based CO2 data are absent.
Ryan J. Pound, Lucy V. Brown, Mat J. Evans, and Lucy J. Carpenter
Atmos. Chem. Phys., 24, 9899–9921, https://doi.org/10.5194/acp-24-9899-2024, https://doi.org/10.5194/acp-24-9899-2024, 2024
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Iodine-mediated loss of ozone to the ocean surface and the subsequent emission of iodine species has a large effect on the troposphere. Here we combine recent experimental insights to develop a box model of the process, which we then parameterize and incorporate into the GEOS-Chem transport model. We find that these new insights have a small impact on the total emission of iodine but significantly change its distribution.
Katherine R. Travis, Benjamin A. Nault, James H. Crawford, Kelvin H. Bates, Donald R. Blake, Ronald C. Cohen, Alan Fried, Samuel R. Hall, L. Gregory Huey, Young Ro Lee, Simone Meinardi, Kyung-Eun Min, Isobel J. Simpson, and Kirk Ullman
Atmos. Chem. Phys., 24, 9555–9572, https://doi.org/10.5194/acp-24-9555-2024, https://doi.org/10.5194/acp-24-9555-2024, 2024
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Human activities result in the emission of volatile organic compounds (VOCs) that contribute to air pollution. Detailed VOC measurements were taken during a field study in South Korea. When compared to VOC inventories, large discrepancies showed underestimates from chemical products, liquefied petroleum gas, and long-range transport. Improved emissions and chemistry of these VOCs better described urban pollution. The new chemical scheme is relevant to urban areas and other VOC sources.
Beth S. Nelson, Zhenze Liu, Freya A. Squires, Marvin Shaw, James R. Hopkins, Jacqueline F. Hamilton, Andrew R. Rickard, Alastair C. Lewis, Zongbo Shi, and James D. Lee
Atmos. Chem. Phys., 24, 9031–9044, https://doi.org/10.5194/acp-24-9031-2024, https://doi.org/10.5194/acp-24-9031-2024, 2024
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The impact of combined air quality and carbon neutrality policies on O3 formation in Beijing was investigated. Emissions inventory data were used to estimate future pollutant mixing ratios relative to ground-level observations. O3 production was found to be most sensitive to changes in alkenes, but large reductions in less reactive compounds led to larger reductions in future O3 production. This study highlights the importance of understanding the emissions of organic pollutants.
Maureen Beaudor, Didier Hauglustaine, Juliette Lathière, Martin Van Damme, Lieven Clarisse, and Nicolas Vuichard
EGUsphere, https://doi.org/10.5194/egusphere-2024-2022, https://doi.org/10.5194/egusphere-2024-2022, 2024
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Agriculture is the biggest ammonia (NH3) source, impacting air quality, climate, and ecosystems. Because of food demand, NH3 emissions are projected to rise by 2100. Using a global model, we analyzed the impact of present and future NH3 emissions generated from a land model. Our results show improved ammonia patterns compared to a reference inventory. Future scenarios predict up to 70 % increase in global NH3 burden, significant changes in radiative forcing, and could significantly elevate N2O.
Amir H. Souri, Bryan N. Duncan, Sarah A. Strode, Daniel C. Anderson, Michael E. Manyin, Junhua Liu, Luke D. Oman, Zhen Zhang, and Brad Weir
Atmos. Chem. Phys., 24, 8677–8701, https://doi.org/10.5194/acp-24-8677-2024, https://doi.org/10.5194/acp-24-8677-2024, 2024
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We explore a new method of using the wealth of information obtained from satellite observations of Aura OMI NO2, HCHO, and MERRA-2 reanalysis in NASA’s GEOS model equipped with an efficient tropospheric OH (TOH) estimator to enhance the representation of TOH spatial distribution and its long-term trends. This new framework helps us pinpoint regional inaccuracies in TOH and differentiate between established prior knowledge and newly acquired information from satellites on TOH trends.
Haipeng Lin, Louisa K. Emmons, Elizabeth W. Lundgren, Laura Hyesung Yang, Xu Feng, Ruijun Dang, Shixian Zhai, Yunxiao Tang, Makoto M. Kelp, Nadia K. Colombi, Sebastian D. Eastham, Thibaud M. Fritz, and Daniel J. Jacob
Atmos. Chem. Phys., 24, 8607–8624, https://doi.org/10.5194/acp-24-8607-2024, https://doi.org/10.5194/acp-24-8607-2024, 2024
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Tropospheric ozone is a major air pollutant, a greenhouse gas, and a major indicator of model skill. Global atmospheric chemistry models show large differences in simulations of tropospheric ozone, but isolating sources of differences is complicated by different model environments. By implementing the GEOS-Chem model side by side to CAM-chem within a common Earth system model, we identify and evaluate specific differences between the two models and their impacts on key chemical species.
Victor Lannuque and Karine Sartelet
Atmos. Chem. Phys., 24, 8589–8606, https://doi.org/10.5194/acp-24-8589-2024, https://doi.org/10.5194/acp-24-8589-2024, 2024
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Large uncertainties remain in understanding secondary organic aerosol (SOA) formation and speciation from naphthalene oxidation. This study details the development of the first near-explicit chemical scheme for naphthalene oxidation by OH, which includes kinetic and mechanistic data, and is able to reproduce most of the experimentally identified products in both gas and particle phases.
Hui Li, Jiaxin Qiu, and Bo Zheng
EGUsphere, https://doi.org/10.5194/egusphere-2024-1986, https://doi.org/10.5194/egusphere-2024-1986, 2024
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We conduct a sensitivity analysis on various factors including prior, model resolution, satellite constraint, and inversion system configuration to assess the vulnerability of emission estimates across temporal, sectoral, and regional dimensions. Our analysis first reveals the robustness of emissions estimated by this air pollution satellite sensor-based CO2 emission inversion system, with relative change between tests and Base inversion below 4.0 % for national annual NOx and CO2 emissions.
Tong Sha, Siyu Yang, Qingcai Chen, Liangqing Li, Xiaoyan Ma, Yan-Lin Zhang, Zhaozhong Feng, K. Folkert Boersma, and Jun Wang
Atmos. Chem. Phys., 24, 8441–8455, https://doi.org/10.5194/acp-24-8441-2024, https://doi.org/10.5194/acp-24-8441-2024, 2024
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Using an updated soil reactive nitrogen emission scheme in the Unified Inputs for Weather Research and Forecasting coupled with Chemistry (UI-WRF-Chem) model, we investigate the role of soil NO and HONO (Nr) emissions in air quality and temperature in North China. Contributions of soil Nr emissions to O3 and secondary pollutants are revealed, exceeding effects of soil NOx or HONO emission. Soil Nr emissions play an important role in mitigating O3 pollution and addressing climate change.
Jian Zhu, Shanshan Wang, Chuanqi Gu, Zhiwen Jiang, Sanbao Zhang, Ruibin Xue, Yuhao Yan, and Bin Zhou
Atmos. Chem. Phys., 24, 8383–8395, https://doi.org/10.5194/acp-24-8383-2024, https://doi.org/10.5194/acp-24-8383-2024, 2024
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In 2022, Shanghai implemented city-wide static management measures during the high-ozone season in April and May, providing a chance to study ozone pollution control. Despite significant emissions reductions, ozone levels increased by 23 %. Statistically, the number of days with higher ozone diurnal variation types increased during the lockdown period. The uneven decline in VOC and NO2 emissions led to heightened photochemical processes, resulting in the observed ozone level rise.
Hiroo Hata, Norifumi Mizushima, and Tomohiko Ihara
EGUsphere, https://doi.org/10.5194/egusphere-2024-1961, https://doi.org/10.5194/egusphere-2024-1961, 2024
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The introduction of battery electric vehicles (BEV) is expected to reduce the primary air pollutants from vehicular exhaust and evaporative emissions while reducing the anthropogenic heat produced by vehicles, ultimately decreasing the urban heat island effect (UHI). This study revealed the impact of introducing BEVs on the decrease in UHI and the effects of BEVs on the formation of tropospheric ozone and fine particulate matter in the Greater Tokyo Area of Japan.
Matthew J. Rowlinson, Mat J. Evans, Lucy J. Carpenter, Katie A. Read, Shalini Punjabi, Adedayo Adedeji, Luke Fakes, Ally Lewis, Ben Richmond, Neil Passant, Tim Murrells, Barron Henderson, Kelvin H. Bates, and Detlev Helmig
Atmos. Chem. Phys., 24, 8317–8342, https://doi.org/10.5194/acp-24-8317-2024, https://doi.org/10.5194/acp-24-8317-2024, 2024
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Ethane and propane are volatile organic compounds emitted from human activities which help to form ozone, a pollutant and greenhouse gas, and also affect the chemistry of the lower atmosphere. Atmospheric models tend to do a poor job of reproducing the abundance of these compounds in the atmosphere. By using regional estimates of their emissions, rather than globally consistent estimates, we can significantly improve the simulation of ethane in the model and make some improvement for propane.
Rodrigo J. Seguel, Lucas Castillo, Charlie Opazo, Néstor Y. Rojas, Thiago Nogueira, María Cazorla, Mario Gavidia-Calderón, Laura Gallardo, René Garreaud, Tomás Carrasco-Escaff, and Yasin Elshorbany
Atmos. Chem. Phys., 24, 8225–8242, https://doi.org/10.5194/acp-24-8225-2024, https://doi.org/10.5194/acp-24-8225-2024, 2024
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Trends of surface ozone were examined across South America. Our findings indicate that ozone trends in major South American cities either increase or remain steady, with no signs of decline. The upward trends can be attributed to chemical regimes that efficiently convert nitric oxide into nitrogen dioxide. Additionally, our results suggest a climate penalty for ozone driven by meteorological conditions that favor wildfire propagation in Chile and extensive heat waves in southern Brazil.
Maarten Krol, Bart van Stratum, Isidora Anglou, and Klaas Folkert Boersma
Atmos. Chem. Phys., 24, 8243–8262, https://doi.org/10.5194/acp-24-8243-2024, https://doi.org/10.5194/acp-24-8243-2024, 2024
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This paper presents detailed plume simulations of nitrogen oxides and carbon dioxide that are emitted from four large industrial facilities world-wide. Results from the high-resolution simulations that include atmospheric chemistry are compared to nitrogen dioxide observations from satellites. We find good performance of the model and show that common assumptions that are used in simplified models need revision. This work is important for the monitoring of emissions using satellite data.
Robin Plauchu, Audrey Fortems-Cheiney, Grégoire Broquet, Isabelle Pison, Antoine Berchet, Elise Potier, Gaëlle Dufour, Adriana Coman, Dilek Savas, Guillaume Siour, and Henk Eskes
Atmos. Chem. Phys., 24, 8139–8163, https://doi.org/10.5194/acp-24-8139-2024, https://doi.org/10.5194/acp-24-8139-2024, 2024
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This study uses the Community Inversion Framework and CHIMERE model to assess the potential of TROPOMI-S5P PAL NO2 tropospheric column data to estimate NOx emissions in France (2019–2021). Results show a 3 % decrease in average emissions compared to the 2016 CAMS-REG/INS, lower than the 14 % decrease from CITEPA. The study highlights challenges in capturing emission anomalies due to limited data coverage and error levels but shows promise for local inventory improvements.
Chelsea E. Stockwell, Matthew M. Coggon, Rebecca H. Schwantes, Colin Harkins, Bert Verreyken, Congmeng Lyu, Qindan Zhu, Lu Xu, Jessica B. Gilman, Aaron Lamplugh, Jeff Peischl, Michael A. Robinson, Patrick R. Veres, Meng Li, Andrew W. Rollins, Kristen Zuraski, Sunil Baidar, Shang Liu, Toshihiro Kuwayama, Steven S. Brown, Brian C. McDonald, and Carsten Warneke
EGUsphere, https://doi.org/10.5194/egusphere-2024-1899, https://doi.org/10.5194/egusphere-2024-1899, 2024
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In urban areas, emissions from everyday products like paints, cleaners, and personal care products, along with non-traditional sources such as cooking are important sources that impact air quality. This study used a model to evaluate how these emissions impact ozone in the Los Angeles Basin, and quantifies the impact of gaseous cooking emissions for the first time. Accurate representation of these and other man-made sources in inventories is crucial to inform effective air quality policies.
Zhendong Lu, Jun Wang, Yi Wang, Daven K. Henze, Xi Chen, Tong Sha, and Kang Sun
Atmos. Chem. Phys., 24, 7793–7813, https://doi.org/10.5194/acp-24-7793-2024, https://doi.org/10.5194/acp-24-7793-2024, 2024
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In contrast with past work showing that the reduction of emissions was the dominant factor for the nationwide increase of surface O3 during the lockdown in China, this study finds that the variation in meteorology (temperature and other parameters) plays a more important role. This result is obtained through sensitivity simulations using a chemical transport model constrained by satellite (TROPOMI) data and calibrated with surface observations.
Xiaohong Yao and Leiming Zhang
Atmos. Chem. Phys., 24, 7773–7791, https://doi.org/10.5194/acp-24-7773-2024, https://doi.org/10.5194/acp-24-7773-2024, 2024
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This study investigates long-term trends of criteria air pollutants, including NO2, CO, SO2, O3 and PM2.5, and NO2+O3 measured in 10 Canadian cities during the last 2 to 3 decades. We also investigate associated driving forces in terms of emission reductions, perturbations from varying weather conditions and large-scale wildfires, as well as changes in O3 sources and sinks.
Yao Ge, Sverre Solberg, Mathew R. Heal, Stefan Reimann, Willem van Caspel, Bryan Hellack, Thérèse Salameh, and David Simpson
Atmos. Chem. Phys., 24, 7699–7729, https://doi.org/10.5194/acp-24-7699-2024, https://doi.org/10.5194/acp-24-7699-2024, 2024
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Atmospheric volatile organic compounds (VOCs) constitute many species, acting as precursors to ozone and aerosol. Given the uncertainties in VOC emissions, lack of evaluation studies, and recent changes in emissions, this work adapts the EMEP MSC-W to evaluate emission inventories in Europe. We focus on the varying agreement between modelled and measured VOCs across different species and underscore potential inaccuracies in total and sector-specific emission estimates.
Shuzhuang Feng, Fei Jiang, Tianlu Qian, Nan Wang, Mengwei Jia, Songci Zheng, Jiansong Chen, Fang Ying, and Weimin Ju
Atmos. Chem. Phys., 24, 7481–7498, https://doi.org/10.5194/acp-24-7481-2024, https://doi.org/10.5194/acp-24-7481-2024, 2024
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We developed a multi-air-pollutant inversion system to estimate non-methane volatile organic compound (NMVOC) emissions using TROPOMI formaldehyde retrievals. We found that the inversion significantly improved formaldehyde simulations and reduced NMVOC emission uncertainties. The optimized NMVOC emissions effectively corrected the overestimation of O3 levels, mainly by decreasing the rate of the RO2 + NO reaction and increasing the rate of the NO2 + OH reaction.
Yuqing Qiu, Xin Li, Wenxuan Chai, Yi Liu, Mengdi Song, Xudong Tian, Qiaoli Zou, Wenjun Lou, Wangyao Zhang, Juan Li, and Yuanhang Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2024-1576, https://doi.org/10.5194/egusphere-2024-1576, 2024
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The chemical reactions of ozone (O3) formation are related to meteorology and local emissions. Here, a random forest approach was used to eliminate the effects of meteorological factors (dispersion or transport) on O3 and its precursors. Variations in the sensitivity of O3 formation and the apportionment of emission sources were revealed after meteorological normalization. Our results suggest that meteorological variations should be considered when diagnosing O3 formation.
Haklim Choi, Alison L. Redington, Hyeri Park, Jooil Kim, Rona L. Thompson, Jens Mühle, Peter K. Salameh, Christina M. Harth, Ray F. Weiss, Alistair J. Manning, and Sunyoung Park
Atmos. Chem. Phys., 24, 7309–7330, https://doi.org/10.5194/acp-24-7309-2024, https://doi.org/10.5194/acp-24-7309-2024, 2024
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We analyzed with an inversion model the atmospheric abundance of hydrofluorocarbons (HFCs), potent greenhouse gases, from 2008 to 2020 at Gosan station in South Korea and revealed a significant increase in emissions, especially from eastern China and Japan. This increase contradicts reported data, underscoring the need for accurate monitoring and reporting. Our findings are crucial for understanding and managing global HFCs emissions, highlighting the importance of efforts to reduce HFCs.
Laura Hyesung Yang, Daniel J. Jacob, Ruijun Dang, Yujin J. Oak, Haipeng Lin, Jhoon Kim, Shixian Zhai, Nadia K. Colombi, Drew C. Pendergrass, Ellie Beaudry, Viral Shah, Xu Feng, Robert M. Yantosca, Heesung Chong, Junsung Park, Hanlim Lee, Won-Jin Lee, Soontae Kim, Eunhye Kim, Katherine R. Travis, James H. Crawford, and Hong Liao
Atmos. Chem. Phys., 24, 7027–7039, https://doi.org/10.5194/acp-24-7027-2024, https://doi.org/10.5194/acp-24-7027-2024, 2024
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The Geostationary Environment Monitoring Spectrometer (GEMS) provides hourly measurements of NO2. We use the chemical transport model to find how emissions, chemistry, and transport drive the changes in NO2 observed by GEMS at different times of the day. In winter, the chemistry plays a minor role, and high daytime emissions dominate the diurnal variation in NO2, balanced by transport. In summer, emissions, chemistry, and transport play an important role in shaping the diurnal variation in NO2.
M. Omar Nawaz, Jeremiah Johnson, Greg Yarwood, Benjamin de Foy, Laura Judd, and Daniel L. Goldberg
Atmos. Chem. Phys., 24, 6719–6741, https://doi.org/10.5194/acp-24-6719-2024, https://doi.org/10.5194/acp-24-6719-2024, 2024
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NO2 is a gas with implications for air pollution. A campaign conducted in Houston provided an opportunity to compare NO2 from different instruments and a model. Aircraft and satellite observations agreed well with measurements on the ground; however, the latter estimated lower values. We find that model-simulated NO2 was lower than observations, especially downtown, suggesting that NO2 sources associated with the urban core of Houston, such as vehicle emissions, may be underestimated.
Natalie Brett, Kathy S. Law, Steve R. Arnold, Javier G. Fochesatto, Jean-Christophe Raut, Tatsuo Onishi, Robert Gilliam, Kathleen Fahey, Deanna Huff, George Pouliot, Brice Barret, Elsa Dieudonne, Roman Pohorsky, Julia Schmale, Andrea Baccarini, Slimane Bekki, Gianluca Pappaccogli, Federico Scoto, Stefano Decesari, Antonio Donateo, Meeta Cesler-Maloney, William Simpson, Patrice Medina, Barbara D'Anna, Brice Temime-Roussel, Joel Savarino, Sarah Albertin, Jingqiu Mao, Becky Alexander, Allison Moon, Peter F. DeCarlo, Vanessa Selimovic, Robert Yokelson, and Ellis S. Robinson
EGUsphere, https://doi.org/10.5194/egusphere-2024-1450, https://doi.org/10.5194/egusphere-2024-1450, 2024
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Processes influencing dispersion of local anthropogenic emissions in Arctic wintertime are investigated with dispersion model simulations. Modelled power plant plume rise that considers surface and elevated temperature inversions improves results compared to observations. Modelled near-surface concentrations are improved by representation of vertical mixing and emission estimates. Large increases in diesel vehicle emissions at temperatures reaching -35 °C are required to reproduce observed NOx.
Tianlang Zhao, Jingqiu Mao, Zolal Ayazpour, Gonzalo González Abad, Caroline R. Nowlan, and Yiqi Zheng
Atmos. Chem. Phys., 24, 6105–6121, https://doi.org/10.5194/acp-24-6105-2024, https://doi.org/10.5194/acp-24-6105-2024, 2024
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HCHO variability is a key tracer in understanding VOC emissions in response to climate change. We investigate the role of methane oxidation and biogenic and wildfire emissions in HCHO interannual variability over northern high latitudes in summer, emphasizing wildfires as a key driver of HCHO interannual variability in Alaska, Siberia and northern Canada using satellite HCHO and SIF retrievals and then GEOS-Chem model. We show SIF is a tool to understand biogenic HCHO variability in this region.
Jianghao Li, Alastair C. Lewis, Jim R. Hopkins, Stephen J. Andrews, Tim Murrells, Neil Passant, Ben Richmond, Siqi Hou, William J. Bloss, Roy M. Harrison, and Zongbo Shi
Atmos. Chem. Phys., 24, 6219–6231, https://doi.org/10.5194/acp-24-6219-2024, https://doi.org/10.5194/acp-24-6219-2024, 2024
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A summertime ozone event at an urban site in Birmingham is sensitive to volatile organic compounds (VOCs) – particularly those of oxygenated VOCs. The roles of anthropogenic VOC sources in urban ozone chemistry are examined by integrating the 1990–2019 national atmospheric emission inventory into model scenarios. Road transport remains the most powerful means of further reducing ozone in this case study, but the benefits may be offset if solvent emissions of VOCs continue to increase.
Kai-Lan Chang, Owen R. Cooper, Audrey Gaudel, Irina Petropavlovskikh, Peter Effertz, Gary Morris, and Brian C. McDonald
Atmos. Chem. Phys., 24, 6197–6218, https://doi.org/10.5194/acp-24-6197-2024, https://doi.org/10.5194/acp-24-6197-2024, 2024
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A great majority of observational trend studies of free tropospheric ozone use sparsely sampled ozonesonde and aircraft measurements as reference data sets. A ubiquitous assumption is that trends are accurate and reliable so long as long-term records are available. We show that sampling bias due to sparse samples can persistently reduce the trend accuracy, and we highlight the importance of maintaining adequate frequency and continuity of observations.
Jin Ma, Linda M. J. Kooijmans, Norbert Glatthor, Stephen A. Montzka, Marc von Hobe, Thomas Röckmann, and Maarten C. Krol
Atmos. Chem. Phys., 24, 6047–6070, https://doi.org/10.5194/acp-24-6047-2024, https://doi.org/10.5194/acp-24-6047-2024, 2024
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The global budget of atmospheric COS can be optimised by inverse modelling using TM5-4DVAR, with the co-constraints of NOAA surface observations and MIPAS satellite data. We found reduced COS biosphere uptake from inversions and improved land and ocean separation using MIPAS satellite data assimilation. Further improvements are expected from better quantification of COS ocean and biosphere fluxes.
Fu-Jie Zhu, Zi-Feng Zhang, Li-Yan Liu, Pu-Fei Yang, Peng-Tuan Hu, Geng-Bo Ren, Meng Qin, and Wan-Li Ma
Atmos. Chem. Phys., 24, 6095–6103, https://doi.org/10.5194/acp-24-6095-2024, https://doi.org/10.5194/acp-24-6095-2024, 2024
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Gas–particle (G–P) partitioning is an important atmospheric behavior for semi-volatile organic compounds (SVOCs). Diurnal variation in G–P partitioning of methylated polycyclic aromatic hydrocarbons (Me-PAHs) demonstrates the possible influence of gaseous degradation; the enhancement of gaseous degradation (1.10–5.58 times) on G–P partitioning is verified by a steady-state G–P partitioning model. The effect of gaseous degradation on G–P partitioning of (especially light) SVOCs is important.
Christoph Staehle, Harald E. Rieder, Arlene M. Fiore, and Jordan L. Schnell
Atmos. Chem. Phys., 24, 5953–5969, https://doi.org/10.5194/acp-24-5953-2024, https://doi.org/10.5194/acp-24-5953-2024, 2024
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Chemistry–climate models show biases compared to surface ozone observations and thus require bias correction for impact studies and the assessment of air quality changes. We compare the performance of commonly used correction techniques for model outputs available via CMIP6. While all methods can reduce model biases, better results are obtained from more complex approaches. Thus, our study suggests broader use of these techniques in studies seeking to inform air quality management and policy.
Qindan Zhu, Rebecca H. Schwantes, Matthew Coggon, Colin Harkins, Jordan Schnell, Jian He, Havala O. T. Pye, Meng Li, Barry Baker, Zachary Moon, Ravan Ahmadov, Eva Y. Pfannerstill, Bryan Place, Paul Wooldridge, Benjamin C. Schulze, Caleb Arata, Anthony Bucholtz, John H. Seinfeld, Carsten Warneke, Chelsea E. Stockwell, Lu Xu, Kristen Zuraski, Michael A. Robinson, J. Andrew Neuman, Patrick R. Veres, Jeff Peischl, Steven S. Brown, Allen H. Goldstein, Ronald C. Cohen, and Brian C. McDonald
Atmos. Chem. Phys., 24, 5265–5286, https://doi.org/10.5194/acp-24-5265-2024, https://doi.org/10.5194/acp-24-5265-2024, 2024
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Volatile organic compounds (VOCs) fuel the production of air pollutants like ozone and particulate matter. The representation of VOC chemistry remains challenging due to its complexity in speciation and reactions. Here, we develop a chemical mechanism, RACM2B-VCP, that better represents VOC chemistry in urban areas such as Los Angeles. We also discuss the contribution of VOCs emitted from volatile chemical products and other anthropogenic sources to total VOC reactivity and O3.
Hannah Nesser, Daniel J. Jacob, Joannes D. Maasakkers, Alba Lorente, Zichong Chen, Xiao Lu, Lu Shen, Zhen Qu, Melissa P. Sulprizio, Margaux Winter, Shuang Ma, A. Anthony Bloom, John R. Worden, Robert N. Stavins, and Cynthia A. Randles
Atmos. Chem. Phys., 24, 5069–5091, https://doi.org/10.5194/acp-24-5069-2024, https://doi.org/10.5194/acp-24-5069-2024, 2024
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We quantify 2019 methane emissions in the contiguous US (CONUS) at a ≈ 25 km × 25 km resolution using satellite methane observations. We find a 13 % upward correction to the 2023 US Environmental Protection Agency (EPA) Greenhouse Gas Emissions Inventory (GHGI) for 2019, with large corrections to individual states, urban areas, and landfills. This may present a challenge for US climate policies and goals, many of which target significant reductions in methane emissions.
David de la Paz, Rafael Borge, Juan Manuel de Andrés, Luis Tovar, Golam Sarwar, and Sergey L. Napelenok
Atmos. Chem. Phys., 24, 4949–4972, https://doi.org/10.5194/acp-24-4949-2024, https://doi.org/10.5194/acp-24-4949-2024, 2024
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This source apportionment modeling study shows that around 70 % of ground-level O3 in Madrid (Spain) is transported from other regions. Nonetheless, emissions from local sources, mainly road traffic, play a significant role, especially under atmospheric stagnation. Local measures during those conditions may be able to reduce O3 peaks by up to 30 % and, thus, lessen impacts from high-O3 episodes in the Madrid metropolitan area.
Cited articles
Akritidis, D., Zanis, P., Katragkou, E., Schultz, M., Tegoulias, I., Poupkou,
A., Markakis, K., Pytharoulis, I., and Karacostas, T.: Evaluating the impact
of chemical boundary conditions on near surface ozone in regional
climate–air quality simulations over Europe, Atmos. Res., 134, 116–130,
https://doi.org/10.1016/j.atmosres.2013.07.021, 2013.
Baker, K. and Scheff, P.: Photochemical model performance for PM2.5
sulfate, nitrate, ammonium, and precursor species SO2, HNO3, and
NH3 at background monitor locations in the central and eastern United
States, Atmos. Environ., 41, 6185–6195, 2007.
Baklanov, A.: Chemical weather forecasting: a new concept of integrated
modelling, Adv. Sci. Res., 4, 23–27, https://doi.org/10.5194/asr-4-23-2010, 2010.
Baklanov, A., Lawrence, M., Pandis, S., Mahura, A., Finardi, S.,
Moussiopoulos, N., Beekmann, M., Laj, P., Gomes, L., Jaffrezo, J.-L., Borbon,
A., Coll, I., Gros, V., Sciare, J., Kukkonen, J., Galmarini, S., Giorgi, F.,
Grimmond, S., Esau, I., Stohl, A., Denby, B., Wagner, T., Butler, T.,
Baltensperger, U., Builtjes, P., van den Hout, D., van der Gon, H. D.,
Collins, B., Schluenzen, H., Kulmala, M., Zilitinkevich, S., Sokhi, R.,
Friedrich, R., Theloke, J., Kummer, U., Jalkinen, L., Halenka, T.,
Wiedensholer, A., Pyle, J., and Rossow, W. B.: MEGAPOLI: concept of
multi-scale modelling of megacity impact on air quality and climate, Adv.
Sci. Res., 4, 115–120, https://doi.org/10.5194/asr-4-115-2010, 2010.
Baldasano, J. M., Pay, M. T., Jorba, O., Gasso, S., and Jimenez-Guerrero, P.:
An annual assessment of air quality with the CALIOPE modeling system over
Spain, Sci. Total Environ., 409, 2163–2178,
https://doi.org/10.1016/j.scitotenv.2011.01.041, 2011.
Barth, M. C. and Church, A. T.: Regional and global distributions and
lifetimes of sulfate aerosols from Mexico City and southeast China, J.
Geophys. Res., 104, 30231–30239, 1999.
Beekmann, M. and Derognat, C.: Monte Carlo uncertainty analysis of a
regional-scale transport chemistry model constrained by measurements from the
Atmospheric Pollution Over the Paris Area (ESQUIF) campaign, J. Geophys.
Res., 108, 8559, https://doi.org/10.1029/2003JD003391, 2003.
Beekmann, M. and Vautard, R.: A modelling study of photochemical regimes over
Europe: robustness and variability, Atmos. Chem. Phys., 10, 10067–10084,
https://doi.org/10.5194/acp-10-10067-2010, 2010.
Behera, N. S. and Sharma, M.: Investigating the potential role of ammonia in
ion chemistry of fine particulate matter formation for an urban environment,
Sci. Total Environ., 408, 3569–3575, 2010.
Bessagnet, B., Hodzic, A., Vautard, R., Beekmann, M., Cheinet, S.,
Honoré, C., Liousse, C., and Rouil, L.: Aerosol modeling with
CHIMERE–preliminary evaluation at the continental scale, Atmos. Environ.,
38, 2803–2817, https://doi.org/10.1016/j.atmosenv.2004.02.034, 2004.
Borrego, C., Monteiro, A., Ferreira, J., Miranda, A. I., Costa, A. M.,
Carvalho, A. C., and Lopes, M.: Procedures for estimation of modelling
uncertainty in air quality assessment, Environ. Int., 34, 613–620,
https://doi.org/10.1016/j.envint.2007.12.005, 2008.
Butler, T. M. and Lawrence, M. G.: The influence of megacities on global
atmospheric chemistry: a modelling study, Environ. Chem., 6, 219–225,
https://doi.org/10.1071/EN08110, 2009.
Byun, D. W.: Dynamically consistent formulations in meteorological and air
quality models for multiscale atmospheric studies. Part I: Governing
equations in a generalized coordinate system, J. Atmos. Sci., 56, 3789–3807,
1999.
Chen, S. J., Liao, S. H., Jian, W. J., and Lin, C. C.: Particle size
distribution of aerosol carbons in ambient air, Environ. Int., 23, 475–488,
1997.
Denier van der Gon, H. A. C., Kuenen, J., and Butle, T.: A Base Year (2005)
MEGAPOLI Global Gridded Emission Inventory (1st Version), Deliverable D1.1,
MEGAPOLI Scientific Report 10-13, MEGAPOLI-16-REP-2010-06, TNO Built
Environment and Geosciences, Utrecht, the Netherlands, 2010.
Dickinson, R. E., Henderson-Sellers, A., and Kennedy, P.:
Biosphere–atmosphere transfer scheme (BATS) version 1 as coupled to the NCAR
community climate model, Tech Rep, National Center for Atmospheric Research
Tech Note NCAR.TN387 + STR, NCAR, Boulder, CO, 1993.
Eben, K., Jurus, P., Resler, J., Belda, M., Pelikán, E., Krüger,
B. C., and Keder, J.: An ensemble Kalman filter for short-term forecasting of
tropospheric ozone concentrations, Q. J. Roy. Meteorol. Soc., 131,
3313–3322, https://doi.org/10.1256/qj.05.110, 2005.
EEA: Corine Land Cover 2006 technical guidelines, EEA (European Environment
Agency), OPOCE (Office for Official Publications of the European
Communities), Copenhagen, 2012.
Escudero, M., Lozano, A., Hierro, J., del Valle, J., and Mantilla, E.: Urban
influence on increasing ozone concentrations in a haracteristic Mediterranean
agglomeration, Atmos. Environ., 99, 322–332,
https://doi.org/10.1016/j.atmosenv.2014.09.061, 2014.
Finardi, S., Silibello, C., D'Allura, A., and Radice, P.: Analysis of
pollutants exchange between the Po Valley and the surrounding European
region, Urban Climate, 10, 682–702, https://doi.org/10.1016/j.uclim.2014.02.002, 2014.
Folberth, G. A., Rumbold, S., Collins, W. J., and Butler, T.: Determination
of Radiative Forcing from Megacity Emissions on the Global Scale, MEGAPOLI
Project Scientific Report 10e08, UK MetOffice Hadley Center, Exeter, UK,
2010.
Freney, E. J., Sellegri, K., Canonaco, F., Colomb, A., Borbon, A., Michoud,
V., Doussin, J.-F., Crumeyrolle, S., Amarouche, N., Pichon, J.-M., Bourianne,
T., Gomes, L., Prevot, A. S. H., Beekmann, M., and Schwarzenböeck, A.:
Characterizing the impact of urban emissions on regional aerosol particles:
airborne measurements during the MEGAPOLI experiment, Atmos. Chem. Phys., 14,
1397–1412, https://doi.org/10.5194/acp-14-1397-2014, 2014.
Fritsch, J. M. and Chappell, C. F.: Numerical prediction of convectively
driven mesoscale pressure systems, Part I: Convective parameterization, J.
Atmos. Sci., 37, 1722–1733, 1980.
Fuhrer, J., Skärby, L., and Ashmore, M. R.: Critical levels for ozone
effects on vegetation in Europe, Environ. Pollut., 97, 91–106, 1997.
Gaffney, J. S., Marley, N. A., Cunningham, M. M., and Doskey, P. C.:
Measurements of peroxyacyl nitrates (PANS) in Mexico City: implications for
megacity air quality impacts on regional scales, Atmos. Environ., 33,
5003–5012, 1999.
Giorgi, F., Bi, X., and Qian, Y.: Indirect versus direct effects of
anthropogenic sulfate on the climate of east Asia as simulated with a
regional coupled climate-chemistry/aerosol model, Climatic Change, 58,
345–376, 2003.
Giorgi, F., Coppola, E., Solmon, F., Mariotti, L., Sylla, M., Bi, X.,
Elguindi, N., Diro, G. T., Nair, V., Giuliani, G., Cozzini, S., Guettler, I.,
O'Brien, T. A., Tawfi, A. B., Shalaby, A., Zakey, A., Steiner, A., Stordal,
F., Sloan, L., and Brankovic, C.: RegCM4: model description and preliminary
tests over multiple CORDEX domains, Clim. Res., 52, 7–29, 2012.
Grell, G.: Prognostic evaluation of assumptions used by cumulus
parameterizations, Mon. Weather Rev., 121, 764–787, 1993.
Grell, G. and Baklanov, A.: Integrated modeling for forecasting weather and
air quality: a call for fully coupled approaches, Atmos. Environ., 45,
6845–6851, 2011.
Grell, G., Dudhia, J., and Stauffer, D. R.: A description of the fifth
generation Penn State/NCAR Mesoscale Model (MM5), National Center for
Atmospheric Research Tech Note NCAR/TN-398 + STR, NCAR, Boulder, CO,
1994.
Guenther, A. B., Zimmermann, P. C., Harley, R., Monson, R. K., and Fall, R.:
Isoprene and monoterpene emission rate variability: model evaluations and
sensitivity analyses, J. Geophys. Res., 98, 12609–12617, 1993.
Gurjar, B. R., Jain, A., Sharma, A., Agarwal, A., Gupta, P., Nagpure, A. S.,
and Lelieveld, J.: Human health risks in megacities due to air pollution,
Atmos. Environ., 44, 4606–4613, https://doi.org/10.1016/j.atmosenv.2010.08.011, 2010.
Guttikunda, K. S., Carmichael, G. R., Calori, G., Eck, C., and Woo, J.-H.:
The contribution of megacities to regional sulfur pollution in Asia, Atmos.
Environ., 37, 11–22, https://doi.org/10.1016/S1352-2310(02)00821-X, 2003.
Guttikunda, S. K., Tang, Y., Carmichael, G. R., Kurata, G., Pan, L., Streets,
D. G., Woo, J.-H., Thongboonchoo, N., and Fried, A.: Impacts of Asian
megacity emissions on regional air quality during spring 2001, J. Geophys.
Res., 110, D20301, https://doi.org/10.1029/2004JD004921, 2005.
Halenka, T., Kalvova, J., Chladova, Z., Demeterova, A., Zemankova, K., and
Belda, M.: On the capability of RegCM to capture extremes in long term
regional climate simulation – comparison with the observations for Czech
Republic, Theor. Appl. Climatol., 86, 125–145,
https://doi.org/10.1007/S00704-005-0205-5, 2006.
Haylock, M., Hofstra, N., Tank, A. K., Klok, E., Jones, P., and New, M.: A
European daily high–resolution gridded data set of surface temperature and
precipitation for 1950–2006, J. Geophys. Res., 113, D20119,
https://doi.org/10.1029/2008JD010201, 2008.
Hodnebrog, Õ., Stordal, F., and Berntsen, T. K.: Does the resolution of
megacity emissions impact large scale ozone?, Atmos. Environ., 45,
6852–6862, 2011.
Hodzic, A., Jimenez, J. L., Madronich, S., Canagaratna, M. R., DeCarlo,
P. F., Kleinman, L., and Fast, J.: Modeling organic aerosols in a megacity:
potential contribution of semi-volatile and intermediate volatility primary
organic compounds to secondary organic aerosol formation, Atmos. Chem. Phys.,
10, 5491–5514, https://doi.org/10.5194/acp-10-5491-2010, 2010.
Hogrefe, C., Rao, S. T., Kasibhatla, P., Hao, W., Sistla, G., Mathur, R., and
McHenry, J.: Evaluating the performance of regional-scale photochemical
modeling systems: Part II – ozone predictions, Atmos. Environ., 35,
4175–4188, https://doi.org/10.1016/S1352-2310(01)00183-2, 2001.
Huszar, P., Miksovsky, J., Pisoft, P., Belda, M., and Halenka, T.:
Interactive coupling of a regional climate model and a chemistry transport
model: evaluation and preliminary results on ozone and aerosol feedback,
Clim. Res., 51, 59–88, https://doi.org/10.3354/cr01054, 2012.
Huszar, P., Teyssèdre, H., Michou, M., Voldoire, A., Olivié,
D. J. L., Saint-Martin, D., Cariolle, D., Senesi, S., Salas Y Melia, D.,
Alias, A., Karcher, F., Ricaud, P., and Halenka, T.: Modeling the present and
future impact of aviation on climate: an AOGCM approach with online coupled
chemistry, Atmos. Chem. Phys., 13, 10027–10048,
https://doi.org/10.5194/acp-13-10027-2013, 2013.
Huszar, P., Halenka, T., Belda, M., Zak, M., Sindelarova, K., and Miksovsky,
J.: Regional climate model assessment of the urban land-surface forcing over
central Europe, Atmos. Chem. Phys., 14, 12393–12413,
https://doi.org/10.5194/acp-14-12393-2014, 2014.
Im, U. and Kanakidou, M.: Impacts of East Mediterranean megacity emissions on
air quality, Atmos. Chem. Phys., 12, 6335–6355,
https://doi.org/10.5194/acp-12-6335-2012, 2012.
Im, U., Poupkou, A., Incecik, S., Markakis, K., Kindap, T., Unal, A., Melas,
D., Yenigun, O., Topcu, O., Odman, M. T., Tayanc, M., and Guler, M.: The
impact of anthropogenic and biogenic emissions on surface ozone
concentrations in Istanbul, Sci. Total Environ., 409, 1255–1265,
https://doi.org/10.1016/j.scitotenv.2010.12.026, 2011a.
Im, U., Markakis, K., Poupkou, A., Melas, D., Unal, A., Gerasopoulos, E.,
Daskalakis, N., Kindap, T., and Kanakidou, M.: The impact of temperature
changes on summer time ozone and its precursors in the Eastern Mediterranean,
Atmos. Chem. Phys., 11, 3847–3864, https://doi.org/10.5194/acp-11-3847-2011, 2011b.
Juda-Rezler, K., Reizer, M., Huszar, P., Krueger, B., Zanis, P., Syrakov, D.,
Katragkou, E., Trapp, W., Melas, D., Chervenkov, H., Tegoulias, I., and
Halenka, T.: Modelling the effects of climate change on air quality over
central and Eastern Europe: concept, evaluation and projections, Clim. Res.,
53, 179–203, https://doi.org/10.3354/cr01072, 2012.
Kanakidou, M., Mihalopoulos, N., Kindap, T., Im, U., Vrekoussis, M.,
Gerasopoulos, E., Dermitzaki, E., Unal, A., Kocak, M., Markakis, K., Melas,
D., Kouvarakis, G., Youssef, A. F., Richter, A., Hatzianastassiou, N.,
Hilboll, A., Ebojie, F., von Savigny, C., Ladstaetter-Weissenmayer, A.,
Burrows, J., and Moubasher, H.: Megacities as hot spots of air pollution in
the East Mediterranean, Atmos. Environ., 45, 1223–1235, 2011.
Katragkou, E., Zanis, P., Tegoulias, I., Melas, D., Kioutsioukis, I.,
Krüger, B. C., Huszar, P., Halenka, T., and Rauscher, S.: Decadal
regional air quality simulations over Europe in present climate: near surface
ozone sensitivity to external meteorological forcing, Atmos. Chem. Phys., 10,
11805–11821, https://doi.org/10.5194/acp-10-11805-2010, 2010.
Kiehl, J., Hack, J., Bonan, G., Boville, B., Breigleb, B., Williamson, D.,
and Rasch, P.: Description of the NCAR Community Climate Model (CCM3),
National Center for Atmospheric Research Tech Note NCAR/TN-420 + STR,
NCAR, Boulder, CO, 1996.
Kuenen, J., Denier van der Gon, H., Visschedijk, A., van der Brugh, H.,
Finardi, S., Radice, P., d'Allura, A., Beevers, S., Theloke, J., Uzbasich,
M., Honor, C., and Perrussel, O.: A Base Year (2005) MEGAPOLI European
Gridded Emission Inventory (Final Version), Deliverable D1.6, MEGAPOLI
Scientific Report 10-17, MEGAPOLI-20-REP-2010-10, TNO Built Environment and
Geosciences, Utrecht, the Netherlands, p. 39, 2010.
Kuhn, M., Builtjes, P. J. H., Poppe, D., Simpson, D., Stockwell, W. R.,
Andersson-Skold, Y., Baart, A., Das, M., Fiedler, F., Hov, Kirchner, F.,
Makar, P. A., Milford, J. B., Roemer, M. G. M., Ruhnke, R., Strand, A.,
Vogel, B., and Vogel, H.: Intercomparison of the gas-phase chemistry in
several chemistry and transport models, Atmos. Environ., 32, 693–709, 1998.
Kuhn, U., Ganzeveld, L., Thielmann, A., Dindorf, T., Schebeske, G., Welling,
M., Sciare, J., Roberts, G., Meixner, F. X., Kesselmeier, J., Lelieveld, J.,
Kolle, O., Ciccioli, P., Lloyd, J., Trentmann, J., Artaxo, P., and Andreae,
M. O.: Impact of Manaus City on the Amazon Green Ocean atmosphere: ozone
production, precursor sensitivity and aerosol load, Atmos. Chem. Phys., 10,
9251–9282, https://doi.org/10.5194/acp-10-9251-2010, 2010.
Lawrence, M. G., Butler, T. M., Steinkamp, J., Gurjar, B. R., and Lelieveld,
J.: Regional pollution potentials of megacities and other major population
centers, Atmos. Chem. Phys., 7, 3969–3987, https://doi.org/10.5194/acp-7-3969-2007,
2007.
Lee, S.-H., Kim, S.-W., Angevine, W. M., Bianco, L., McKeen, S. A., Senff,
C. J., Trainer, M., Tucker, S. C., and Zamora, R. J.: Evaluation of urban
surface parameterizations in the WRF model using measurements during the
Texas Air Quality Study 2006 field campaign, Atmos. Chem. Phys., 11,
2127–2143, https://doi.org/10.5194/acp-11-2127-2011, 2011.
Lin, X., Roussel, P. B., Laszlo, S., Taylor, R., Melo, O. T., Shepson, P. B.,
Hastie, D. R., and Niki, H.: Impact of Toronto urban emissions on ozone
levels downwind, Atmos. Environ., 30, 2177–2193, 1996.
Lin, Y.-C., Cheng, M.-T., Lin, W.-H., Lan, Y.-Y., and Tsuang, B.-J.: Causes
of the elevated nitrate aerosol levels during episodic days in Taichung urban
area, Taiwan, Atmos. Environ., 44, 1632–1640,
https://doi.org/10.1016/j.atmosenv.2010.01.039, 2010.
Markakis, K., Valari, M., Perrussel, O., Sanchez, O., and Honore, C.:
Climate-forced air-quality modeling at the urban scale: sensitivity to model
resolution, emissions and meteorology, Atmos. Chem. Phys., 15, 7703–7723,
https://doi.org/10.5194/acp-15-7703-2015, 2015.
Martin, S. T., Hung, H.-M., Park, R. J., Jacob, D. J., Spurr, R. J. D.,
Chance, K. V., and Chin, M.: Effects of the physical state of tropospheric
ammonium-sulfate-nitrate particles on global aerosol direct radiative
forcing, Atmos. Chem. Phys., 4, 183–214, https://doi.org/10.5194/acp-4-183-2004, 2004.
McMeeking, G. R., Kreidenweis, S. M., Carrico, C., Lee, T., Collett Jr.,
J. L., and Malm, W. C.: Observations of smoke-influenced aerosol during the
Yosemite Aerosol Characterization Study: size distributions and chemical
composition, J. Geophys. Res., 110, D09206, https://doi.org/10.1029/2004JD005389, 2005.
Molina, L. T., Madronich, S., Gaffney, J. S., Apel, E., de Foy, B., Fast, J.,
Ferrare, R., Herndon, S., Jimenez, J. L., Lamb, B., Osornio-Vargas, A. R.,
Russell, P., Schauer, J. J., Stevens, P. S., Volkamer, R., and Zavala, M.: An
overview of the MILAGRO 2006 Campaign: Mexico City emissions and their
transport and transformation, Atmos. Chem. Phys., 10, 8697–8760,
https://doi.org/10.5194/acp-10-8697-2010, 2010.
Myhre, G., Grini, A., and Metzger, S.: Modelling of nitrate and
ammonium-containing aerosols in presence of sea salt, Atmos. Chem. Phys., 6,
4809–4821, https://doi.org/10.5194/acp-6-4809-2006, 2006.
Nenes, A., Pandis, S. N., and Pilinis, C.: ISORROPIA: a new thermodynamic
equilibrium model for multiphase multicomponent inorganic aerosols, Aquat.
Geochem., 4, 123–152, 1998.
O'Brien, J. J.: A note on the vertical structure of the eddy exchange
coefficient in the planetary boundary layer, J. Atmos. Sci., 27, 1213–1215,
1970.
Offenberg, J. H. and Baker, J. E.: Aerosol size distributions of elemental
and organic carbon in urban and over-water atmospheres, Atmos. Environ., 34,
1509–1517, https://doi.org/10.1016/S1352-2310(99)00412-4, 2000.
Oleson, K. W., Bonan, J. B., Feddema, J., Vertenstein, M., and Grimmond,
C. S. B.: An urban parameterization for a global climate model, Part I:
Formulation and evaluation of two cities, J. Appl. Meteorol. Clim., 47,
1038–1060, 2008.
Pal, J. S., Small, E. E., and Eltahir, E. A. B.: Simulation of regional scale
water and energy budgets: representation of subgrid cloud and precipitation
processes within RegCM, J. Geophys. Res., 105, 29579–29594, 2000.
Paredes-Miranda, G., Arnott, W. P., Jimenez, J. L., Aiken, A. C., Gaffney,
J. S., and Marley, N. A.: Primary and secondary contributions to aerosol
light scattering and absorption in Mexico City during the MILAGRO 2006
campaign, Atmos. Chem. Phys., 9, 3721–3730, https://doi.org/10.5194/acp-9-3721-2009,
2009.
Poupkou, A., Symeonidis, P., Lisaridis, I., Melas, D., Ziomas, I., Yay,
O. D., and Balis, D.: Effects of anthropogenic emission sources on maximum
ozone concentrations over Greece, Atmos. Res., 89, 374–381, 2008.
Samara, C., Voutsa, D., Kouras, A., Eleftheriadis, K., Maggos, T., Saraga,
D., and Petrakakis, M.: Organic and elemental carbon associated to PM10
and PM2.5 at urban sites of northern Greece, Environ. Sci. Pollut. R.,
21, 1769–1785, 2014.
Sarwar, G., Luecken, D., Yarwood, G., Whitten, G. Z., and Carter, W. P. L.:
Impact of an updated carbon bond mechanism on predictions from the CMAQ
modeling system: preliminary assessment, J. Appl. Meteorol. Clim., 47, 3–14,
2008.
Schaap, M., van Loon, M., ten Brink, H. M., Dentener, F. J., and Builtjes,
P. J. H.: Secondary inorganic aerosol simulations for Europe with special
attention to nitrate, Atmos. Chem. Phys., 4, 857–874,
https://doi.org/10.5194/acp-4-857-2004, 2004.
Seinfeld, J. H. and Pandis, S. N.: Atmospheric Chemistry and Physics: From
Air Pollution to Climate Change, J. Wiley, New York, 1998.
Sillman, S.: The relation between ozone, NOx and hydrocarbons in urban
and polluted rural environments, Millenial Review series, Atmos. Environ.,
33, 1821–1845, 1999.
Simmons, A. J., Willett, K. M., Jones, P. D., Thorne, P. W., and Dee, D. P.:
Low-frequency variations in surface atmospheric humidity, temperature and
precipitation: inferences from reanalyses and monthly gridded observational
datasets, J. Geophys. Res., 115, D01110, https://doi.org/10.1029/2009JD012442, 2010.
Simpson, D., Yttri, K. E., Klimont, Z., Kupiainen, K., Caseiro, A.,
Gelencser, A., Pio, C., Puxbaum, H., and Legrand, M.: Modeling carbonaceous
aerosol over Europe: analysis of the CARBOSOL and EMEP EC/OC campaigns, J.
Geophys. Res., 112, D23S14, https://doi.org/10.1029/2006JD008158, 2007.
Skyllakou, K., Murphy, B. N., Megaritis, A. G., Fountoukis, C., and Pandis,
S. N.: Contributions of local and regional sources to fine PM in the megacity
of Paris, Atmos. Chem. Phys., 14, 2343–2352, https://doi.org/10.5194/acp-14-2343-2014,
2014.
Streets, D. G. and Waldhoff, S. T.: Present and future emissions of air
pollutants in China: SO2, NOx, and CO, Atmos. Environ., 34,
363–374, 2000.
Stock, Z. S., Russo, M. R., Butler, T. M., Archibald, A. T., Lawrence, M. G.,
Telford, P. J., Abraham, N. L., and Pyle, J. A.: Modelling the impact of
megacities on local, regional and global tropospheric ozone and the
deposition of nitrogen species, Atmos. Chem. Phys., 13, 12215–12231,
https://doi.org/10.5194/acp-13-12215-2013, 2013.
Thunis, P., Rouil, L., Cuvelier, C., Stern, R., Kerschbaumer, A., Bessagnet,
B., Schaap, M., Builtjes, P., Tarrason, L., Douros, J., Moussiopoulos, N.,
Pirovano, G., and Bedogni, M.: Analysis of model responses to
emission-reduction scenarios within the CityDelta project, Atmos. Environ.,
41, 208–220, https://doi.org/10.1016/j.atmosenv.2006.09.001, 2007.
Timothy, M. and Lawrence, M. G.: The influence of megacities on global
atmospheric chemistry: a modeling study, Environ. Chem., 6, 219–225,
https://doi.org/10.1071/EN08110, 2009.
Wang, T., Ding, A., Gao, J., and Wu, W. S.: Strong ozone production in urban
plumes from Beijing, China, Geophys. Res. Lett., 33, L21806,
https://doi.org/10.1029/2006GL027689, 2006.
Wang, T., Li, S., Shen, Y., Deng, J., and Xie, M.: Investigations on direct
and indirect effect of nitrate on temperature and precipitation in China
using a regional climate chemistry modeling system, J. Geophys. Res., 115,
D00K26, https://doi.org/10.1029/2009JD013264, 2010.
Winiwarter, W. and Zueger, J.: Pannonisches Ozonprojekt, Teilprojekt
Emissionen, Endbericht, Report OEFZS-A-3817, Austrian Research Center,
Seibersdorf, 1996.
Xue, L. K., Wang, T., Gao, J., Ding, A. J., Zhou, X. H., Blake, D. R., Wang,
X. F., Saunders, S. M., Fan, S. J., Zuo, H. C., Zhang, Q. Z., and Wang,
W. X.: Ground-level ozone in four Chinese cities: precursors, regional
transport and heterogeneous processes, Atmos. Chem. Phys., 14, 13175–13188,
https://doi.org/10.5194/acp-14-13175-2014, 2014.
Yttri, K. E., Aas, W., Bjerke, A., Cape, J. N., Cavalli, F., Ceburnis, D.,
Dye, C., Emblico, L., Facchini, M. C., Forster, C., Hanssen, J. E., Hansson,
H. C., Jennings, S. G., Maenhaut, W., Putaud, J. P., and Tørseth, K.:
Elemental and organic carbon in PM10: a one year measurement campaign
within the European Monitoring and Evaluation Programme EMEP, Atmos. Chem.
Phys., 7, 5711–5725, https://doi.org/10.5194/acp-7-5711-2007, 2007.
Zanis, P., Katragkou, E., Tegoulias, I., Poupkou, A., Melas, D., Huszar, P.,
and Giorgi, F.: Evaluation of near surface ozone in air quality simulations
forced by a regional climate model over Europe for the period 1991–2000,
Atmos. Environ., 45, 6489–6500, https://doi.org/10.1016/j.atmosenv.2011.09.001, 2011.
Zhang, Q. J., Beekmann, M., Freney, E., Sellegri, K., Pichon, J. M.,
Schwarzenboeck, A., Colomb, A., Bourrianne, T., Michoud, V., and Borbon, A.:
Formation of secondary organic aerosol in the Paris pollution plume and its
impact on surrounding regions, Atmos. Chem. Phys., 15, 13973–13992,
https://doi.org/10.5194/acp-15-13973-2015, 2015.
Short summary
The study is dealing with the present day air quality impacts of the urban emissions, focusing on central Europe. Using a coupled regional climate/chemistry model we showed that urban centers impact largely (by up to 10–20 %) the regional air quality but the urban air quality itself is affected by local emission by only 50 % and the rural (non-urban) emissions and long-range transport play an important role in urban air pollution. This has to be taken into account in air quality control measures.
The study is dealing with the present day air quality impacts of the urban emissions, focusing...
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