Articles | Volume 19, issue 2
https://doi.org/10.5194/acp-19-1373-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-19-1373-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Feb 2019
Research article |
| 01 Feb 2019
First measurement of atmospheric mercury species in Qomolangma Natural Nature Preserve, Tibetan Plateau, and evidence oftransboundary pollutant invasion
Huiming Lin
MOE Laboratory of Earth Surface Processes, College of Urban and
Environmental Sciences, Peking University, Beijing, 100871, China
Yindong Tong
CORRESPONDING AUTHOR
School of Environmental Science and Engineering, Tianjin University,
Tianjin, 300072, China
Xiufeng Yin
State Key Laboratory of Cryospheric Science, Northwest Institute of
Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000,
China
Key Laboratory of Tibetan Environment Changes and Land Surface Processes,
Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing,
100101, China
University of Chinese Academy of Sciences, Beijing, 100039, China
Qianggong Zhang
Key Laboratory of Tibetan Environment Changes and Land Surface Processes,
Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing,
100101, China
CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing,
100085, China
Hui Zhang
State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China
Haoran Zhang
MOE Laboratory of Earth Surface Processes, College of Urban and
Environmental Sciences, Peking University, Beijing, 100871, China
Long Chen
School of Geographic Sciences, East China Normal University, Shanghai,
200241, China
Shichang Kang
State Key Laboratory of Cryospheric Science, Northwest Institute of
Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000,
China
University of Chinese Academy of Sciences, Beijing, 100039, China
CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing,
100085, China
Wei Zhang
School of Environment and Natural Resources, Renmin University of China,
Beijing, 100872, China
James Schauer
Department of Civil and Environmental Engineering, University of
Wisconsin, Madison, WI 53706, USA
Wisconsin State Laboratory of Hygiene, University of Wisconsin, Madison,
WI 53706, USA
Benjamin de Foy
Department of Earth and Atmospheric Sciences, Saint Louis
University, Saint Louis, MO 63108, USA
Xiaoge Bu
School of Environmental Science and Engineering, Tianjin University,
Tianjin, 300072, China
MOE Laboratory of Earth Surface Processes, College of Urban and
Environmental Sciences, Peking University, Beijing, 100871, China
Related authors
Huiming Lin, Yindong Tong, Long Chen, Chenghao Yu, Zhaohan Chu, Qianru Zhang, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Junfeng Liu, James Schauer, Benjamin de Foy, and Xuejun Wang
Atmos. Chem. Phys., 23, 3937–3953, https://doi.org/10.5194/acp-23-3937-2023, https://doi.org/10.5194/acp-23-3937-2023, 2023
Short summary
Short summary
Lhasa is the largest city in the Tibetan Plateau, and its atmospheric mercury concentrations represent the highest level of pollution in this region. Unexpectedly high concentrations of atmospheric mercury species were found. Combined with the trajectory analysis, the high atmospheric mercury concentrations may have originated from external long-range transport. Local sources, especially special mercury-related sources, are important factors influencing the variability of atmospheric mercury.
Huiming Lin, Yindong Tong, Chenghao Yu, Long Chen, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Lun Luo, James Schauer, Benjamin de Foy, and Xuejun Wang
Atmos. Chem. Phys., 22, 2651–2668, https://doi.org/10.5194/acp-22-2651-2022, https://doi.org/10.5194/acp-22-2651-2022, 2022
Short summary
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The Tibetan Plateau is known as
The Third Poleand is generally considered to be a clean area owing to its high altitude. However, it may receive be impacted by air pollutants transported from the Indian subcontinent. Pollutants generally enter the Tibetan Plateau in several ways. Among them is the Yarlung Zangbu–Brahmaputra Grand Canyon. In this study, we identified the influence of the Indian summer monsoon on the origin, transport, and behavior of mercury in this area.
Xiufeng Yin, Dipesh Rupakheti, Guoshuai Zhang, Jiali Luo, Shichang Kang, Benjamin de Foy, Junhua Yang, Zhenming Ji, Zhiyuan Cong, Maheswar Rupakheti, Ping Li, Yuling Hu, and Qianggong Zhang
Atmos. Chem. Phys., 23, 10137–10143, https://doi.org/10.5194/acp-23-10137-2023, https://doi.org/10.5194/acp-23-10137-2023, 2023
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The monthly mean surface ozone concentrations peaked earlier in the south in April and May and later in the north in June and July over the Tibetan Plateau. The migration of monthly surface ozone peaks was coupled with the synchronous movement of tropopause folds and the westerly jet that created conditions conducive to stratospheric ozone intrusion. Stratospheric ozone intrusion significantly contributed to surface ozone across the Tibetan Plateau.
Huiming Lin, Yindong Tong, Long Chen, Chenghao Yu, Zhaohan Chu, Qianru Zhang, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Junfeng Liu, James Schauer, Benjamin de Foy, and Xuejun Wang
Atmos. Chem. Phys., 23, 3937–3953, https://doi.org/10.5194/acp-23-3937-2023, https://doi.org/10.5194/acp-23-3937-2023, 2023
Short summary
Short summary
Lhasa is the largest city in the Tibetan Plateau, and its atmospheric mercury concentrations represent the highest level of pollution in this region. Unexpectedly high concentrations of atmospheric mercury species were found. Combined with the trajectory analysis, the high atmospheric mercury concentrations may have originated from external long-range transport. Local sources, especially special mercury-related sources, are important factors influencing the variability of atmospheric mercury.
Daniel L. Goldberg, Monica Harkey, Benjamin de Foy, Laura Judd, Jeremiah Johnson, Greg Yarwood, and Tracey Holloway
Atmos. Chem. Phys., 22, 10875–10900, https://doi.org/10.5194/acp-22-10875-2022, https://doi.org/10.5194/acp-22-10875-2022, 2022
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TROPOMI measurements offer a valuable means to validate emissions inventories and ozone formation regimes, with important limitations. Lightning NOx is important to account for in Texas and can contribute up to 24 % of the column NO2 in rural areas and 8 % in urban areas. Modeled NO2 in urban areas agrees with TROPOMI NO2 to within 20 % in most circumstances, with a small underestimate in Dallas (−13 %) and Houston (−20 %). Near Texas power plants, the satellite appears to underrepresent NO2.
Huiming Lin, Yindong Tong, Chenghao Yu, Long Chen, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Lun Luo, James Schauer, Benjamin de Foy, and Xuejun Wang
Atmos. Chem. Phys., 22, 2651–2668, https://doi.org/10.5194/acp-22-2651-2022, https://doi.org/10.5194/acp-22-2651-2022, 2022
Short summary
Short summary
The Tibetan Plateau is known as
The Third Poleand is generally considered to be a clean area owing to its high altitude. However, it may receive be impacted by air pollutants transported from the Indian subcontinent. Pollutants generally enter the Tibetan Plateau in several ways. Among them is the Yarlung Zangbu–Brahmaputra Grand Canyon. In this study, we identified the influence of the Indian summer monsoon on the origin, transport, and behavior of mercury in this area.
Shichang Kang, Yulan Zhang, Pengfei Chen, Junming Guo, Qianggong Zhang, Zhiyuan Cong, Susan Kaspari, Lekhendra Tripathee, Tanguang Gao, Hewen Niu, Xinyue Zhong, Xintong Chen, Zhaofu Hu, Xiaofei Li, Yang Li, Bigyan Neupane, Fangping Yan, Dipesh Rupakheti, Chaman Gul, Wei Zhang, Guangming Wu, Ling Yang, Zhaoqing Wang, and Chaoliu Li
Earth Syst. Sci. Data, 14, 683–707, https://doi.org/10.5194/essd-14-683-2022, https://doi.org/10.5194/essd-14-683-2022, 2022
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The Tibetan Plateau is important to the Earth’s climate. However, systematically observed data here are scarce. To perform more integrated and in-depth investigations of the origins and distributions of atmospheric pollutants and their impacts on cryospheric change, systematic data of black carbon and organic carbon from the atmosphere, glaciers, snow cover, precipitation, and lake sediment cores over the plateau based on the Atmospheric Pollution and Cryospheric Change program are provided.
Wendong Ge, Junfeng Liu, Kan Yi, Jiayu Xu, Yizhou Zhang, Xiurong Hu, Jianmin Ma, Xuejun Wang, Yi Wan, Jianying Hu, Zhaobin Zhang, Xilong Wang, and Shu Tao
Atmos. Chem. Phys., 21, 16093–16120, https://doi.org/10.5194/acp-21-16093-2021, https://doi.org/10.5194/acp-21-16093-2021, 2021
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Compared with the observations, the results incorporating detailed cloud aqueous-phase chemistry greatly reduced SO2 overestimation. The biases in annual simulated SO2 concentrations (or mixing ratios) decreased by 46 %, 41 %, and 22 % in Europe, the USA, and China, respectively. Fe chemistry and HOx chemistry contributed more to SO2 oxidation than N chemistry. Higher concentrations of soluble Fe and higher pH values could further enhance the oxidation capacity.
Youwen Sun, Hao Yin, Yuan Cheng, Qianggong Zhang, Bo Zheng, Justus Notholt, Xiao Lu, Cheng Liu, Yuan Tian, and Jianguo Liu
Atmos. Chem. Phys., 21, 9201–9222, https://doi.org/10.5194/acp-21-9201-2021, https://doi.org/10.5194/acp-21-9201-2021, 2021
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We quantified the variability, source, and transport of urban CO over the Himalayas and Tibetan Plateau (HTP) by using measurement, model simulation, and the analysis of meteorological fields. Urban CO over the HTP is dominated by anthropogenic and biomass burning emissions from local, South Asia and East Asia, and oxidation sources. The decreasing trends in surface CO since 2015 in most cities over the HTP are attributed to the reduction in local and transported CO emissions in recent years.
Jun Zhu, Xiangao Xia, Huizheng Che, Jun Wang, Zhiyuan Cong, Tianliang Zhao, Shichang Kang, Xuelei Zhang, Xingna Yu, and Yanlin Zhang
Atmos. Chem. Phys., 19, 14637–14656, https://doi.org/10.5194/acp-19-14637-2019, https://doi.org/10.5194/acp-19-14637-2019, 2019
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The long-term temporal–spatial variations of the aerosol optical properties over the Tibetan Plateau (TP) based on the multiple ground-based sun photometer sites and the MODIS product are presented. Besides, the aerosol pollution and aerosol transport processes over the TP are also analyzed by the observations and models. The results in this region could help reduce the assessment uncertainties of aerosol radiative forcing and provide more information on aerosol transportation.
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.
Xin Wan, Shichang Kang, Maheswar Rupakheti, Qianggong Zhang, Lekhendra Tripathee, Junming Guo, Pengfei Chen, Dipesh Rupakheti, Arnico K. Panday, Mark G. Lawrence, Kimitaka Kawamura, and Zhiyuan Cong
Atmos. Chem. Phys., 19, 2725–2747, https://doi.org/10.5194/acp-19-2725-2019, https://doi.org/10.5194/acp-19-2725-2019, 2019
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The sources of primary and secondary aerosols in the Hindu Kush–Himalayan–Tibetan Plateau region are not well known. Organic molecular tracers are useful for aerosol source apportionment. The characterization of molecular tracers were first systemically investigated and the contribution from primary and secondary sources to carbonaceous aerosols was estimated in the Kathmandu Valley. Our results demonstrate that biomass burning contributed a significant fraction to OC in the Kathmandu Valley.
Daniel L. Goldberg, Pablo E. Saide, Lok N. Lamsal, Benjamin de Foy, Zifeng Lu, Jung-Hun Woo, Younha Kim, Jinseok Kim, Meng Gao, Gregory Carmichael, and David G. Streets
Atmos. Chem. Phys., 19, 1801–1818, https://doi.org/10.5194/acp-19-1801-2019, https://doi.org/10.5194/acp-19-1801-2019, 2019
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Using satellite data, we are able to estimate the emissions of NOx (NOx=NO+NO2), a toxic group of air pollutants, in the Seoul metropolitan area. We first develop an enhanced satellite product that better observes NO2 in urban regions. Using this new product, we derive NOx emissions to be twice as large as the emissions reported by the South Korean government. The implication is that the measures taken to reduce NOx emissions in South Korea have not been as effective as regulators have thought.
Xiufeng Yin, Shichang Kang, Benjamin de Foy, Yaoming Ma, Yindong Tong, Wei Zhang, Xuejun Wang, Guoshuai Zhang, and Qianggong Zhang
Atmos. Chem. Phys., 18, 10557–10574, https://doi.org/10.5194/acp-18-10557-2018, https://doi.org/10.5194/acp-18-10557-2018, 2018
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Total gaseous mercury concentrations were measured at Nam Co Station on the inland Tibetan Plateau for ~ 3 years. The mean concentration of TGM during the entire monitoring period was 1.33 ± 0.24 ngm-3, ranking it the lowest in China and indicating the pristine atmospheric environment of the inland Tibetan Plateau. Variation of TGM at Nam Co was affected by regional surface reemission, vertical mixing and long-range transported atmospheric mercury, which was associated with the Indian monsoon.
Xiufeng Yin, Shichang Kang, Benjamin de Foy, Zhiyuan Cong, Jiali Luo, Lang Zhang, Yaoming Ma, Guoshuai Zhang, Dipesh Rupakheti, and Qianggong Zhang
Atmos. Chem. Phys., 17, 11293–11311, https://doi.org/10.5194/acp-17-11293-2017, https://doi.org/10.5194/acp-17-11293-2017, 2017
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We presented 5-year surface ozone measurements at Nam Co in the inland Tibetan Plateau and made a synthesis comparison of diurnal and seasonal patterns on regional and hemispheric scales. Surface ozone at Nam Co is mainly dominated by natural processes and is less influenced by stratospheric intrusions and human activities than on the rim of the Tibetan Plateau. Ozone at Nam Co is representative of background that is valuable for studying ozone-related effects on large scales.
Dipesh Rupakheti, Bhupesh Adhikary, Puppala Siva Praveen, Maheswar Rupakheti, Shichang Kang, Khadak Singh Mahata, Manish Naja, Qianggong Zhang, Arnico Kumar Panday, and Mark G. Lawrence
Atmos. Chem. Phys., 17, 11041–11063, https://doi.org/10.5194/acp-17-11041-2017, https://doi.org/10.5194/acp-17-11041-2017, 2017
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For the first time, atmospheric composition was monitored during pre-monsoon season of 2013 at Lumbini (UNESCO world heritage site as birthplace of the Buddha). PM and O3 frequently exceeded WHO guidelines. Pollution concentration, diurnal characteristics and influence of open burning on air quality in Lumbini were investigated. Potential source regions were also identified. Results show that air pollution at this site is of a great concern, requiring prompt attention for mitigation.
Xin Wan, Shichang Kang, Quanlian Li, Dipesh Rupakheti, Qianggong Zhang, Junming Guo, Pengfei Chen, Lekhendra Tripathee, Maheswar Rupakheti, Arnico K. Panday, Wu Wang, Kimitaka Kawamura, Shaopeng Gao, Guangming Wu, and Zhiyuan Cong
Atmos. Chem. Phys., 17, 8867–8885, https://doi.org/10.5194/acp-17-8867-2017, https://doi.org/10.5194/acp-17-8867-2017, 2017
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Biomass burning (BB) tracers in the aerosols in Lumbini, northern IGP, were studied for the first time. The levoglucosan was the predominant tracer and BB significantly contributed to the air quality in Lumbini. Mixed crop residues and hardwood were main burning materials. BB emissions constituted large fraction of OC, especially during the post-monsoon season. The sources of BB aerosols in Lumbini varies seasonally due to the influence of local emissions and long-range transport.
Peng Fei Chen, Chao Liu Li, Shi Chang Kang, Maheswar Rupakheti, Arnico K. Panday, Fang Ping Yan, Quan Lian Li, Qiang Gong Zhang, Jun Ming Guo, Dipesh Rupakheti, and Wei Luo
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2016-71, https://doi.org/10.5194/acp-2016-71, 2016
Revised manuscript not accepted
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PAHs were measured at six sites along two south-north transects across the central Himalayas. The annual average PAHs and their dry deposition fluxes decreased noticeably from the south to north sides, however, a similar compostion pattern was found at three remote sites, suggesting the northern slope of the Himalayas may be affected by anthropogenic emissions form Indo-Gangetic Plain. PAHs showed a clear seasonal variation at Nepal and they were mainly form biomass and fossil combustion .
Z. Lu, D. G. Streets, B. de Foy, L. N. Lamsal, B. N. Duncan, and J. Xing
Atmos. Chem. Phys., 15, 10367–10383, https://doi.org/10.5194/acp-15-10367-2015, https://doi.org/10.5194/acp-15-10367-2015, 2015
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Using an exponentially modified Gaussian method and taking into account the effect of wind on NO2 distributions, we estimate 3-year moving-average emissions of summertime NOx from 35 US urban areas directly from NO2 retrievals of the OMI during 2005−2014. Total OMI-derived NOx emissions over US urban areas decreased by 49%, consistent with reductions of 43, 49, and 44% in the bottom-up NOx emissions, the weak-wind OMI NO2 burdens, and the averaged NO2 concentrations, respectively.
S. Song, N. E. Selin, A. L. Soerensen, H. Angot, R. Artz, S. Brooks, E.-G. Brunke, G. Conley, A. Dommergue, R. Ebinghaus, T. M. Holsen, D. A. Jaffe, S. Kang, P. Kelley, W. T. Luke, O. Magand, K. Marumoto, K. A. Pfaffhuber, X. Ren, G.-R. Sheu, F. Slemr, T. Warneke, A. Weigelt, P. Weiss-Penzias, D. C. Wip, and Q. Zhang
Atmos. Chem. Phys., 15, 7103–7125, https://doi.org/10.5194/acp-15-7103-2015, https://doi.org/10.5194/acp-15-7103-2015, 2015
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A better knowledge of mercury (Hg) emission fluxes into the global atmosphere is important for assessing its human health impacts and evaluating the effectiveness of corresponding policy actions. We for the first time apply a top-down approach at a global scale to quantitatively estimate present-day mercury emission sources as well as key parameters in a chemical transport model, in order to better constrain the global biogeochemical cycle of mercury.
Z. L. Lüthi, B. Škerlak, S.-W. Kim, A. Lauer, A. Mues, M. Rupakheti, and S. Kang
Atmos. Chem. Phys., 15, 6007–6021, https://doi.org/10.5194/acp-15-6007-2015, https://doi.org/10.5194/acp-15-6007-2015, 2015
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The Himalayas and the Tibetan Plateau region (HTP) is regularly exposed to polluted air masses that might influence glaciers as well as climate on regional to global scales. We found that atmospheric brown clouds from South Asia reach the HTP by crossing the Himalayas not only through the major north--south river valleys but rather over large areas by being lifted and advected at mid-troposheric levels. The transport is enabled by a combination of synoptic and local meteorological settings.
B. de Foy, Y. Y. Cui, J. J. Schauer, M. Janssen, J. R. Turner, and C. Wiedinmyer
Atmos. Chem. Phys., 15, 2405–2427, https://doi.org/10.5194/acp-15-2405-2015, https://doi.org/10.5194/acp-15-2405-2015, 2015
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Elemental carbon and organic carbon are components of fine particulate matter that are harmful to health. We use computer simulations of wind patterns and pollution dispersion to analyze a year-long time series of hourly measurements made at the St. Louis-Midwest supersite. The inverse method produced improved estimates of emissions of these pollutants by different types of sources such as on-road and off-road emissions and open burning.
Z. Cong, S. Kang, K. Kawamura, B. Liu, X. Wan, Z. Wang, S. Gao, and P. Fu
Atmos. Chem. Phys., 15, 1573–1584, https://doi.org/10.5194/acp-15-1573-2015, https://doi.org/10.5194/acp-15-1573-2015, 2015
B. Qu, J. Ming, S.-C. Kang, G.-S. Zhang, Y.-W. Li, C.-D. Li, S.-Y. Zhao, Z.-M. Ji, and J.-J. Cao
Atmos. Chem. Phys., 14, 11117–11128, https://doi.org/10.5194/acp-14-11117-2014, https://doi.org/10.5194/acp-14-11117-2014, 2014
Y. Y. Cui, A. Hodzic, J. N. Smith, J. Ortega, J. Brioude, H. Matsui, E. J. T. Levin, A. Turnipseed, P. Winkler, and B. de Foy
Atmos. Chem. Phys., 14, 11011–11029, https://doi.org/10.5194/acp-14-11011-2014, https://doi.org/10.5194/acp-14-11011-2014, 2014
L. Chen, H. H. Wang, J. F. Liu, Y. D. Tong, L. B. Ou, W. Zhang, D. Hu, C. Chen, and X. J. Wang
Atmos. Chem. Phys., 14, 10163–10176, https://doi.org/10.5194/acp-14-10163-2014, https://doi.org/10.5194/acp-14-10163-2014, 2014
M. Jenkins, S. Kaspari, S. Kang, B. Grigholm, and P. A. Mayewski
The Cryosphere Discuss., https://doi.org/10.5194/tcd-7-4855-2013, https://doi.org/10.5194/tcd-7-4855-2013, 2013
Revised manuscript not accepted
Related subject area
Subject: Gases | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Emission factors and evolution of SO2 measured from biomass burning in wildfires and agricultural fires
Changes in surface ozone in South Korea on diurnal to decadal time scale for the period of 2001–2021
Olivia E. Clifton, Donna Schwede, Christian Hogrefe, Jesse O. Bash, Sam Bland, Philip Cheung, Mhairi Coyle, Lisa Emberson, Johannes Flemming, Erick Fredj, Stefano Galmarini, Laurens Ganzeveld, Orestis Gazetas, Ignacio Goded, Christopher D. Holmes, László Horváth, Vincent Huijnen, Qian Li, Paul A. Makar, Ivan Mammarella, Giovanni Manca, J. William Munger, Juan L. Pérez-Camanyo, Jonathan Pleim, Limei Ran, Roberto San Jose, Sam J. Silva, Ralf Staebler, Shihan Sun, Amos P. K. Tai, Eran Tas, Timo Vesala, Tamás Weidinger, Zhiyong Wu, and Leiming Zhang
Atmos. Chem. Phys., 23, 9911–9961, https://doi.org/10.5194/acp-23-9911-2023, https://doi.org/10.5194/acp-23-9911-2023, 2023
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A primary sink of air pollutants is dry deposition. Dry deposition estimates differ across the models used to simulate atmospheric chemistry. Here, we introduce an effort to examine dry deposition schemes from atmospheric chemistry models. We provide our approach’s rationale, document the schemes, and describe datasets used to drive and evaluate the schemes. We also launch the analysis of results by evaluating against observations and identifying the processes leading to model–model differences.
Qindan Zhu, Bryan Place, Eva Y. Pfannerstill, Sha Tong, Huanxin Zhang, Jun Wang, Clara M. Nussbaumer, Paul Wooldridge, Benjamin C. Schulze, Caleb Arata, Anthony Bucholtz, John H. Seinfeld, Allen H. Goldstein, and Ronald C. Cohen
Atmos. Chem. Phys., 23, 9669–9683, https://doi.org/10.5194/acp-23-9669-2023, https://doi.org/10.5194/acp-23-9669-2023, 2023
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Nitrogen oxide (NOx) is a hazardous air pollutant, and it is the precursor of short-lived climate forcers like tropospheric ozone and aerosol particles. While NOx emissions from transportation has been strictly regulated, soil NOx emissions are overlooked. We use the airborne flux measurements to observe NOx emissions from highways and urban and cultivated soil land cover types. We show non-negligible soil NOx emissions, which are significantly underestimated in current model simulations.
Money Ossohou, Jonathan Edward Hickman, Lieven Clarisse, Pierre-François Coheur, Martin Van Damme, Marcellin Adon, Véronique Yoboué, Eric Gardrat, Maria Dias Alvès, and Corinne Galy-Lacaux
Atmos. Chem. Phys., 23, 9473–9494, https://doi.org/10.5194/acp-23-9473-2023, https://doi.org/10.5194/acp-23-9473-2023, 2023
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The updated analyses of ground-based concentrations and satellite total vertical columns of atmospheric ammonia help us to better understand 21st century ammonia dynamics in sub-Saharan Africa. We conclude that the drivers of trends are agriculture in the dry savanna of Katibougou, Mali; air temperature and agriculture in the wet savanna of Djougou, Benin, and Lamto, Côte d'Ivoire; and leaf area index, air temperature, residential, and agriculture in forests of Bomassa, Republic of Congo.
Hyeri Park, Jooil Kim, Haklim Choi, Sohyeon Geum, Yeaseul Kim, Rona L. Thompson, Jens Mühle, Peter K. Salameh, Christina M. Harth, Kieran M. Stanley, Simon O'Doherty, Paul J. Fraser, Peter G. Simmonds, Paul B. Krummel, Ray F. Weiss, Ronald G. Prinn, and Sunyoung Park
Atmos. Chem. Phys., 23, 9401–9411, https://doi.org/10.5194/acp-23-9401-2023, https://doi.org/10.5194/acp-23-9401-2023, 2023
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Based on atmospheric HFC-23 observations, the first estimate of post-CDM HFC-23 emissions in eastern Asia for 2008–2019 shows that these emissions contribute significantly to the global emissions rise. The observation-derived emissions were much larger than the bottom-up estimates expected to approach zero after 2015 due to national abatement activities. These discrepancies could be attributed to unsuccessful factory-level HFC-23 abatement and inaccurate quantification of emission reductions.
Philipp Eger, Theresa Mathes, Alex Zavarsky, and Lars Duester
Atmos. Chem. Phys., 23, 8769–8788, https://doi.org/10.5194/acp-23-8769-2023, https://doi.org/10.5194/acp-23-8769-2023, 2023
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We investigated the contribution of inland shipping to air pollution at the river Rhine in Germany. Land-based measurements of gaseous and particulate pollutants were carried out for more than 1 year to provide a realistic estimate for the exposure of people to air pollution close to the riverside. Emissions of nitrogen oxides and particulate matter relative to the amount of fuel used, as well as their dependence on ship size, engine type and operating conditions, were examined.
Hejun Hu, Haichao Wang, Keding Lu, Jie Wang, Zelong Zheng, Xuezhen Xu, Tianyu Zhai, Xiaorui Chen, Xiao Lu, Wenxing Fu, Xin Li, Limin Zeng, Min Hu, Yuanhang Zhang, and Shaojia Fan
Atmos. Chem. Phys., 23, 8211–8223, https://doi.org/10.5194/acp-23-8211-2023, https://doi.org/10.5194/acp-23-8211-2023, 2023
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Nitrate radical chemistry is critical to the degradation of volatile organic compounds (VOCs) and secondary organic aerosol formation. This work investigated the level, seasonal variation, and trend of nitrate radical reactivity towards volatile organic compounds (kNO3) in Beijing. We show the key role of isoprene and styrene in regulating seasonal variation in kNO3 and rebuild a long-term record of kNO3 based on the reported VOC measurements.
Eliane Gomes Alves, Raoni Aquino Santana, Cléo Quaresma Dias-Júnior, Santiago Botía, Tyeen Taylor, Ana Maria Yáñez-Serrano, Jürgen Kesselmeier, Efstratios Bourtsoukidis, Jonathan Williams, Pedro Ivo Lembo Silveira de Assis, Giordane Martins, Rodrigo de Souza, Sérgio Duvoisin Júnior, Alex Guenther, Dasa Gu, Anywhere Tsokankunku, Matthias Sörgel, Bruce Nelson, Davieliton Pinto, Shujiro Komiya, Diogo Martins Rosa, Bettina Weber, Cybelli Barbosa, Michelle Robin, Kenneth J. Feeley, Alvaro Duque, Viviana Londoño Lemos, Maria Paula Contreras, Alvaro Idarraga, Norberto López, Chad Husby, Brett Jestrow, and Iván Mauricio Cely Toro
Atmos. Chem. Phys., 23, 8149–8168, https://doi.org/10.5194/acp-23-8149-2023, https://doi.org/10.5194/acp-23-8149-2023, 2023
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Isoprene is emitted mainly by plants and can influence atmospheric chemistry and air quality. But, there are uncertainties in model emission estimates and follow-up atmospheric processes. In our study, with long-term observational datasets of isoprene and biological and environmental factors from central Amazonia, we show that isoprene emission estimates could be improved when biological processes were mechanistically incorporated into the model.
Thais Luarte, Victoria A. Gómez-Aburto, Ignacio Poblete-Castro, Eduardo Castro-Nallar, Nicolas Huneeus, Marco Molina-Montenegro, Claudia Egas, Germán Azcune, Andrés Pérez-Parada, Rainier Lohmann, Pernilla Bohlin-Nizzetto, Jordi Dachs, Susan Bengtson-Nash, Gustavo Chiang, Karla Pozo, and Cristóbal J. Galbán-Malagón
Atmos. Chem. Phys., 23, 8103–8118, https://doi.org/10.5194/acp-23-8103-2023, https://doi.org/10.5194/acp-23-8103-2023, 2023
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In the last 40 years, different research groups have reported on the atmospheric concentrations of persistent organic pollutants in Antarctica. In the present work, we make a compilation to understand the historical trends and estimate the atmospheric half-life of each compound. Of the compounds studied, HCB was the only one that showed no clear trend, while the rest of the studied compounds showed a significant decrease over time. This is consistent with results for polar and sub-polar zones.
Midhun George, Maria Dolores Andrés Hernández, Vladyslav Nenakhov, Yangzhuoran Liu, John Philip Burrows, Birger Bohn, Eric Förster, Florian Obersteiner, Andreas Zahn, Theresa Harlaß, Helmut Ziereis, Hans Schlager, Benjamin Schreiner, Flora Kluge, Katja Bigge, and Klaus Pfeilsticker
Atmos. Chem. Phys., 23, 7799–7822, https://doi.org/10.5194/acp-23-7799-2023, https://doi.org/10.5194/acp-23-7799-2023, 2023
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The applicability of photostationary steady-state (PSS) assumptions to estimate the amount of the sum of peroxy radicals (RO2*) during the EMeRGe airborne observations from the known radical chemistry and onboard measurements of RO2* precursors, photolysis frequencies, and other trace gases such as NOx and O3 was investigated. The comparison of the calculated RO2* with the actual measurements provides an insight into the main processes controlling their concentration in the air masses measured.
Ross Petersen, Thomas Holst, Meelis Mölder, Natascha Kljun, and Janne Rinne
Atmos. Chem. Phys., 23, 7839–7858, https://doi.org/10.5194/acp-23-7839-2023, https://doi.org/10.5194/acp-23-7839-2023, 2023
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We investigate variability in the vertical distribution of volatile organic compounds (VOCs) in boreal forest, determined through multiyear measurements at several heights in a boreal forest in Sweden. VOC source/sink seasonality in canopy was explored using these vertical profiles and with measurements from a collection of sonic anemometers on the station flux tower. Our results show seasonality in the source/sink distribution for several VOCs, such as monoterpenes and water-soluble compounds.
Wanyun Xu, Yuxuan Bian, Weili Lin, Yingjie Zhang, Yaru Wang, Zhiqiang Ma, Xiaoyi Zhang, Gen Zhang, Chunxiang Ye, and Xiaobin Xu
Atmos. Chem. Phys., 23, 7635–7652, https://doi.org/10.5194/acp-23-7635-2023, https://doi.org/10.5194/acp-23-7635-2023, 2023
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Tropospheric ozone (O3) and peroxyacetyl nitrate (PAN) are both photochemical pollutants harmful to the ecological environment and human health, especially in the Tibetan Plateau (TP). However, the factors determining their variations in the TP have not been comprehensively investigated. Results from field measurements and observation-based models revealed that day-to-day variations in O3 and PAN were in fact controlled by distinct physiochemical processes.
Megan E. McCabe, Ilana B. Pollack, Emily V. Fischer, Kathryn M. Steinmann, and Dana R. Caulton
Atmos. Chem. Phys., 23, 7479–7494, https://doi.org/10.5194/acp-23-7479-2023, https://doi.org/10.5194/acp-23-7479-2023, 2023
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Agriculture emissions, including those from beef and dairy cattle feeding operations, make up a large portion of the United States’ total greenhouse gas emissions, but many of these operations reside in areas where methane from oil and natural gas is prevalent, making it difficult to attribute methane in these areas. This work investigates two approaches to emission attribution for cattle feeding operations and provides guidance for emission attribution in other complicated regions.
Youwei Hong, Keran Zhang, Dan Liao, Gaojie Chen, Min Zhao, Yiling Lin, Xiaoting Ji, Ke Xu, Yu Wu, Ruilian Yu, Gongren Hu, Sung-Deuk Choi, Likun Xue, and Jinsheng Chen
EGUsphere, https://doi.org/10.5194/egusphere-2023-1242, https://doi.org/10.5194/egusphere-2023-1242, 2023
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Particle uptakes of HCHO and the impacts on PM2.5 and O3 production remain highly uncertain. Based on the investigation of co-occurring wintertime O3 and PM2.5 pollution in a coastal city of southeast China, we found enhanced the heterogeneous formation of hydroxymethanesulfonate (HMS), and increased the ROx concentrations and net O3 production rates. The findings of this study are helpful to better explore the mechanisms of key precursors for co-occurring PM2.5 and O3 pollution.
Haeyoung Lee, Wonick Seo, Shanlan Li, Soojeong Lee, Samuel Takele Kenea, and Sangwon Joo
Atmos. Chem. Phys., 23, 7141–7159, https://doi.org/10.5194/acp-23-7141-2023, https://doi.org/10.5194/acp-23-7141-2023, 2023
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We introduced three Korea Meteorological Administration (KMA) monitoring stations with monitoring systems and measurement uncertainty. We also analyzed the regional characteristics of CH4 at each KMA station. CH4 levels measured at KMA stations are compared to those measured at other Asian stations. From the long-term records of CH4 and δ13CH4 at AMY, we confirmed that the source of CH4xs changed from the past (2006 to 2010) to recent (2016 to 2020) years in East Asia.
Robert G. Ryan, Eloise A. Marais, Eleanor Gershenson-Smith, Robbie Ramsay, Jan-Peter Muller, Jan-Lukas Tirpitz, and Udo Frieß
Atmos. Chem. Phys., 23, 7121–7139, https://doi.org/10.5194/acp-23-7121-2023, https://doi.org/10.5194/acp-23-7121-2023, 2023
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We describe the first data retrieval from a newly installed instrument providing measurements of vertical profiles of air pollution over Central London during heatwaves in summer 2022. We use these observations with surface air quality network measurements to support interpretation that an exponential increase in biogenic emissions of isoprene during heatwaves provides the limiting ingredient for severe ozone pollution, leading to non-compliance with the national ozone air quality standard.
Zhouxing Zou, Qianjie Chen, Men Xia, Qi Yuan, Yi Chen, Yanan Wang, Enyu Xiong, Zhe Wang, and Tao Wang
Atmos. Chem. Phys., 23, 7057–7074, https://doi.org/10.5194/acp-23-7057-2023, https://doi.org/10.5194/acp-23-7057-2023, 2023
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We present OH observation and model simulation results at a coastal site in Hong Kong. The model predicted the OH concentration under high-NOx well but overpredicted it under low-NOx conditions. This implies an insufficient understanding of OH chemistry under low-NOx conditions. We show evidence of missing OH sinks as a possible cause of the overprediction.
Yaqin Gao, Hongli Wang, Lingling Yuan, Shengao Jing, Bin Yuan, Guofeng Shen, Liang Zhu, Abigail Koss, Yingjie Li, Qian Wang, Dan Dan Huang, Shuhui Zhu, Shikang Tao, Shengrong Lou, and Cheng Huang
Atmos. Chem. Phys., 23, 6633–6646, https://doi.org/10.5194/acp-23-6633-2023, https://doi.org/10.5194/acp-23-6633-2023, 2023
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A near-complete speciation of reactive organic gases from residential combustion was developed to get more insights into their atmospheric effects. Oxygenated species, higher hydrocarbons and nitrogen-containing species played larger roles in these emissions compared with common hydrocarbons. Based on the near-complete speciation, these emissions were largely underestimated, leading to more underestimation of their hydroxyl radical reactivity and secondary organic aerosol formation potential.
Jenny Oh, Chubashini Shunthirasingham, Ying Duan Lei, Faqiang Zhan, Yuening Li, Abigaëlle Dalpé Castilloux, Amina Ben Chaaben, Zhe Lu, Kelsey Lee, Frank A. P. C. Gobas, Sabine Eckhardt, Nick Alexandrou, Hayley Hung, and Frank Wania
EGUsphere, https://doi.org/10.5194/egusphere-2023-1151, https://doi.org/10.5194/egusphere-2023-1151, 2023
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An emerging brominated flame retardant (BFRs) called TBECH has never been produced or imported for use in Canada, yet is found to be one of the most abundant gaseous BFRs in the Canadian atmosphere. The recorded spatial and temporal variability of TBECH suggest that the release from imported consumer products containing TBECH are the most likely explanation for its environmental occurrence in Canada.
Zaneta Hamryszczak, Dirk Dienhart, Bettina Brendel, Roland Rohloff, Daniel Marno, Monica Martinez, Hartwig Harder, Andrea Pozzer, Birger Bohn, Martin Zöger, Jos Lelieveld, and Horst Fischer
Atmos. Chem. Phys., 23, 5929–5943, https://doi.org/10.5194/acp-23-5929-2023, https://doi.org/10.5194/acp-23-5929-2023, 2023
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Hydrogen peroxide is a key contributor to the oxidative chemistry of the atmosphere through its link to the most prominent oxidants controlling its self-cleansing capacity, HOx. During the CAFE-Africa campaign, H2O2 was measured over the Atlantic Ocean and western Africa in August/September 2018. The study gives an overview of the distribution of H2O2 in the upper tropical troposphere and investigates the impact of convective processes in the Intertropical Convergence Zone on the budget of H2O2.
Chengzhi Xing, Shiqi Xu, Yuhang Song, Cheng Liu, Yuhan Liu, Keding Lu, Wei Tan, Chengxin Zhang, Qihou Hu, Shanshan Wang, Hongyu Wu, and Hua Lin
Atmos. Chem. Phys., 23, 5815–5834, https://doi.org/10.5194/acp-23-5815-2023, https://doi.org/10.5194/acp-23-5815-2023, 2023
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High RH could contribute to the secondary formation of HONO in the sea atmosphere. High temperature could promote the formation of HONO from NO2 heterogeneous reactions in the sea and coastal atmosphere. The aerosol surface plays a more important role during the above process in coastal and sea cases. The generation rate of HONO from the NO2 heterogeneous reaction in the sea cases is larger than that in inland cases in higher atmospheric layers above 600 m.
Daniel John Katz, Aroob Abdelhamid, Harald Stark, Manjula R. Canagaratna, Douglas R. Worsnop, and Eleanor C. Browne
Atmos. Chem. Phys., 23, 5567–5585, https://doi.org/10.5194/acp-23-5567-2023, https://doi.org/10.5194/acp-23-5567-2023, 2023
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Ambient ion chemical composition measurements provide insight into trace gases that are precursors for the formation and growth of new aerosol particles. We use a new data analysis approach to increase the chemical information from these measurements. We analyze results from an agricultural region, a little studied land use type that is ~41 % of global land use, and find that the composition of gases important for aerosol formation and growth differs significantly from that in other ecosystems.
Amelia M. H. Bond, Markus M. Frey, Jan Kaiser, Jörg Kleffmann, Anna E. Jones, and Freya A. Squires
Atmos. Chem. Phys., 23, 5533–5550, https://doi.org/10.5194/acp-23-5533-2023, https://doi.org/10.5194/acp-23-5533-2023, 2023
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Atmospheric nitrous acid (HONO) amount fractions measured at Halley Research Station, Antarctica, were found to be low. Vertical fluxes of HONO from the snow were also measured and agree with the estimated HONO production rate from photolysis of snow nitrate. In a simple box model of HONO sources and sinks, there was good agreement between the measured flux and amount fraction. HONO was found to be an important OH radical source at Halley.
Rujing Yin, Xiaoxiao Li, Chao Yan, Runlong Cai, Ying Zhou, Juha Kangasluoma, Nina Sarnela, Janne Lampilahti, Tuukka Petäjä, Veli-Matti Kerminen, Federico Bianchi, Markku Kulmala, and Jingkun Jiang
Atmos. Chem. Phys., 23, 5279–5296, https://doi.org/10.5194/acp-23-5279-2023, https://doi.org/10.5194/acp-23-5279-2023, 2023
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Atmospheric cluster ions are important constituents in the atmosphere. However, the quantitative research on their compositions is still limited, especially in urban environments. Here we demonstrate the feasibility of an in situ quantification method of cluster ions measured by a high-resolution mass spectrometer and reveal their governing factors, sources, and sinks in urban Beijing through quantitative analysis of cluster ions, reagent ions, neutral molecules, and condensation sink.
Magdalena Okuljar, Olga Garmash, Miska Olin, Joni Kalliokoski, Hilkka Timonen, Jarkko V. Niemi, Pauli Paasonen, Jenni Kontkanen, Yanjun Zhang, Heidi Hellén, Heino Kuuluvainen, Minna Aurela, Hanna E. Manninen, Mikko Sipilä, Topi Rönkkö, Tuukka Petäjä, Markku Kulmala, Miikka Dal Maso, and Mikael Ehn
EGUsphere, https://doi.org/10.5194/egusphere-2023-524, https://doi.org/10.5194/egusphere-2023-524, 2023
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Highly oxygenated organic molecules form secondary organic aerosol that affects air quality and health. In this study, we demonstrate that in a moderately polluted city with abundant vegetation, the composition of HOM is largely controlled by the effect of NOx on the biogenic VOC oxidation. Comparing the results from two nearby stations, we show that HOM composition and formation pathways can change considerably within small distances in urban environments.
Eva Y. Pfannerstill, Caleb Arata, Qindan Zhu, Benjamin C. Schulze, Roy Woods, John H. Seinfeld, Anthony Bucholtz, Ronald C. Cohen, and Allen H. Goldstein
EGUsphere, https://doi.org/10.5194/egusphere-2023-723, https://doi.org/10.5194/egusphere-2023-723, 2023
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The San Joaquin Valley is an agricultural area with poor air quality. Organic gases drive the formation of hazardous air pollutants. Agricultural emissions of these gases are not well understood and have rarely been quantified at landscape scale. By combining aircraft-based emission measurements with land cover information, we found mis- or unrepresented emission sources. The results of this study help understand pollution sources and improve predictions of air quality in agricultural regions.
Brandon Bottorff, Michelle M. Lew, Youngjun Woo, Pamela Rickly, Matthew D. Rollings, Benjamin Deming, Daniel C. Anderson, Ezra Wood, Hariprasad D. Alwe, Dylan B. Millet, Andrew Weinheimer, Geoff Tyndall, John Ortega, Sebastien Dusanter, Thierry Leonardis, James Flynn, Matt Erickson, Sergio Alvarez, Jean C. Rivera-Rios, Joshua D. Shutter, Frank Keutsch, Detlev Helmig, Wei Wang, Hannah M. Allen, Steven Bertman, and Philip S. Stevens
EGUsphere, https://doi.org/10.5194/egusphere-2023-790, https://doi.org/10.5194/egusphere-2023-790, 2023
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The hydroxyl (OH), hydroperoxy (HO2), and organic peroxy (RO2) radicals play important roles in atmospheric chemistry and have significant air quality implications. Here, we compare measurements of OH, HO2, and total peroxy radicals (XO2) made in a remote forest in Michigan, USA to predictions from a series of chemical models. Lower measured radical concentrations suggest that the models may be missing an important radical sink and overestimating the rate of ozone production in this forest.
Qiaozhi Zha, Wei Huang, Diego Aliaga, Otso Peräkylä, Liine Heikkinen, Alkuin Maximilian Koenig, Cheng Wu, Joonas Enroth, Yvette Gramlich, Jing Cai, Samara Carbone, Armin Hansel, Tuukka Petäjä, Markku Kulmala, Douglas Worsnop, Victoria Sinclair, Radovan Krejci, Marcos Andrade, Claudia Mohr, and Federico Bianchi
Atmos. Chem. Phys., 23, 4559–4576, https://doi.org/10.5194/acp-23-4559-2023, https://doi.org/10.5194/acp-23-4559-2023, 2023
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We investigate the chemical composition of atmospheric cluster ions from January to May 2018 at the high-altitude research station Chacaltaya (5240 m a.s.l.) in the Bolivian Andes. With state-of-the-art mass spectrometers and air mass history analysis, the measured cluster ions exhibited distinct diurnal and seasonal patterns, some of which contributed to new particle formation. Our study will improve the understanding of atmospheric ions and their role in high-altitude new particle formation.
Zeyu Sun, Zheng Zong, Yang Tan, Chongguo Tian, Zeyu Liu, Fan Zhang, Rong Sun, Yingjun Chen, Jun Li, and Gan Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2023-500, https://doi.org/10.5194/egusphere-2023-500, 2023
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This is the first report of ship-emitted nitrogen stable isotope composition (δ15N) of nitrogen oxides (NOx). Results showed that δ15N–NOx from ships was −18.5 ± 10.9 ‰ and increased monotonically with tightening emission regulations. The selective catalytic reduction system was the most vital factor. The temporal variation in δ15N–NOx was evaluated and can be used to select suitable δ15N–NOx for a more accurate assessment of the contribution of ship-emitted exhaust to atmospheric NOx.
Clara M. Nussbaumer, Bryan K. Place, Qindan Zhu, Eva Y. Pfannerstill, Paul Wooldridge, Benjamin C. Schulze, Caleb Arata, Ryan Ward, Anthony Bucholtz, John H. Seinfeld, Allen H. Goldstein, and Ronald C. Cohen
EGUsphere, https://doi.org/10.5194/egusphere-2023-601, https://doi.org/10.5194/egusphere-2023-601, 2023
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NOx is a precursor to hazardous tropospheric ozone and can be emitted from various anthropogenic sources. It is important to quantify NOx emissions in urban environments in order to improve the local air quality which still remains a challenge as sources are heterogeneous in space and time. In this study, we calculate NOx emissions over Los Angeles based on aircraft measurements in June 2021 and compare them to a local emission inventory which we find to mostly overpredict the measured values.
Michael P. Vermeuel, Gordon A. Novak, Delaney B. Kilgour, Megan S. Claflin, Brian M. Lerner, Amy M. Trowbridge, Jonathan Thom, Patricia A. Cleary, Ankur R. Desai, and Timothy H. Bertram
Atmos. Chem. Phys., 23, 4123–4148, https://doi.org/10.5194/acp-23-4123-2023, https://doi.org/10.5194/acp-23-4123-2023, 2023
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Reactive carbon species emitted from natural sources such as forests play an important role in the chemistry of the atmosphere. Predictions of these emissions are based on plant responses during the growing season and do not consider potential effects from seasonal changes. To address this, we made measurements of reactive carbon over a forest during the summer to autumn transition. We learned that observed concentrations and emissions for some key species are larger than model predictions.
Huiming Lin, Yindong Tong, Long Chen, Chenghao Yu, Zhaohan Chu, Qianru Zhang, Xiufeng Yin, Qianggong Zhang, Shichang Kang, Junfeng Liu, James Schauer, Benjamin de Foy, and Xuejun Wang
Atmos. Chem. Phys., 23, 3937–3953, https://doi.org/10.5194/acp-23-3937-2023, https://doi.org/10.5194/acp-23-3937-2023, 2023
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Lhasa is the largest city in the Tibetan Plateau, and its atmospheric mercury concentrations represent the highest level of pollution in this region. Unexpectedly high concentrations of atmospheric mercury species were found. Combined with the trajectory analysis, the high atmospheric mercury concentrations may have originated from external long-range transport. Local sources, especially special mercury-related sources, are important factors influencing the variability of atmospheric mercury.
Vaishali Jain, Nidhi Tripathi, Sachchida N. Tripathi, Mansi Gupta, Lokesh K. Sahu, Vishnu Murari, Sreenivas Gaddamidi, Ashutosh K. Shukla, and Andre S. H. Prevot
Atmos. Chem. Phys., 23, 3383–3408, https://doi.org/10.5194/acp-23-3383-2023, https://doi.org/10.5194/acp-23-3383-2023, 2023
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This research chemically characterises 173 different NMVOCs (non-methane volatile organic compounds) measured in real time for three seasons in the city of the central Indo-Gangetic basin of India, Lucknow. Receptor modelling is used to analyse probable sources of NMVOCs and their crucial role in forming ozone and secondary organic aerosols. It is observed that vehicular emissions and solid fuel combustion are the highest contributors to the emission of primary and secondary NMVOCs.
Chunxiang Ye, Shuzheng Guo, Weili Lin, Fangjie Tian, Jianshu Wang, Chong Zhang, Suzhen Chi, Yi Chen, Yingjie Zhang, Limin Zeng, Xin Li, Duo Bu, Jiacheng Zhou, and Weixiong Zhao
EGUsphere, https://doi.org/10.5194/egusphere-2022-1239, https://doi.org/10.5194/egusphere-2022-1239, 2023
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Online VOC measurements by GCMS, accompanied by other O3 precursors, were employed to identify key VOC and key sources in Lhasa. TVOCs (18.70 ± 8.35 ppb) and major anthropogenic alkanes and aromatics are half abundant relative to Beijing. OVOCs consist of 52 % of the TVOCs. Alkenes and OVOCs account fo over 80 % of the OFP. Aromatics dominate SOAP. PMF decomposed six residents' life associated sources.
Yizhen Wu, Juntao Huo, Gan Yang, Yuwei Wang, Lihong Wang, Shijian Wu, Lei Yao, Qingyan Fu, and Lin Wang
Atmos. Chem. Phys., 23, 2997–3014, https://doi.org/10.5194/acp-23-2997-2023, https://doi.org/10.5194/acp-23-2997-2023, 2023
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Based on a field campaign in a suburban area of Shanghai during summer 2021, we calculated formaldehyde (HCHO) production rates from 24 volatile organic compounds (VOCs). In addition, HCHO photolysis, reactions with OH radicals, and dry deposition were considered for the estimation of HCHO loss rates. Our results reveal the key precursors of HCHO and suggest that HCHO wet deposition may be an important loss term on cloudy and rainy days, which needs to be further investigated.
Yu Han, Tao Wang, Rui Li, Hongbo Fu, Yusen Duan, Song Gao, Liwu Zhang, and Jianmin Chen
Atmos. Chem. Phys., 23, 2877–2900, https://doi.org/10.5194/acp-23-2877-2023, https://doi.org/10.5194/acp-23-2877-2023, 2023
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Limited knowledge is available on volatile organic compound (VOC) multi-site research of different land-use types at city level. This study performed a concurrent multi-site observation campaign on the three typical land-use types of Shanghai, East China. The results showed that concentrations, sources and ozone and secondary organic aerosol formation potentials of VOCs varied with the land-use types.
Zhensen Zheng, Kangwei Li, Bo Xu, Jianping Dou, Liming Li, Guotao Zhang, Shijie Li, Chunmei Geng, Wen Yang, Merched Azzi, and Zhipeng Bai
Atmos. Chem. Phys., 23, 2649–2665, https://doi.org/10.5194/acp-23-2649-2023, https://doi.org/10.5194/acp-23-2649-2023, 2023
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Previous box model studies applied different timescales of observational datasets to identify the O3–precursor relationship, but there is a lack of comparison among these different timescales regarding the impact of O3 formation chemistry. Through a case study at Zibo in China, we find that the O3 formation regime showed overall consistency but non-negligible variability among various patterns of timescale. This would be complementary in developing more accurate O3 pollution control strategies.
Lejish Vettikkat, Pasi Miettinen, Angela Buchholz, Pekka Rantala, Hao Yu, Simon Schallhart, Tuukka Petäjä, Roger Seco, Elisa Männistö, Markku Kulmala, Eeva-Stiina Tuittila, Alex B. Guenther, and Siegfried Schobesberger
Atmos. Chem. Phys., 23, 2683–2698, https://doi.org/10.5194/acp-23-2683-2023, https://doi.org/10.5194/acp-23-2683-2023, 2023
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Wetlands cover a substantial fraction of the land mass in the northern latitudes, from northern Europe to Siberia and Canada. Yet, their isoprene and terpene emissions remain understudied. Here, we used a state-of-the-art measurement technique to quantify ecosystem-scale emissions from a boreal wetland during an unusually warm spring/summer. We found that the emissions from this wetland were (a) higher and (b) even more strongly dependent on temperature than commonly thought.
Foteini Stavropoulou, Katarina Vinković, Bert Kers, Marcel de Vries, Steven van Heuven, Piotr Korbeń, Martina Schmidt, Julia Wietzel, Pawel Jagoda, Jaroslav M. Necki, Jakub Bartyzel, Hossein Maazallahi, Malika Menoud, Carina van der Veen, Sylvia Walter, Béla Tuzson, Jonas Ravelid, Randulph Paulo Morales, Lukas Emmenegger, Dominik Brunner, Michael Steiner, Arjan Hensen, Ilona Velzeboer, Pim van den Bulk, Hugo Denier van der Gon, Antonio Delre, Maklawe Essonanawe Edjabou, Charlotte Scheutz, Marius Corbu, Sebastian Iancu, Denisa Moaca, Alin Scarlat, Alexandru Tudor, Ioana Vizireanu, Andreea Calcan, Magdalena Ardelean, Sorin Ghemulet, Alexandru Pana, Aurel Constantinescu, Lucian Cusa, Alexandru Nica, Calin Baciu, Cristian Pop, Andrei Radovici, Alexandru Mereuta, Horatiu Stefanie, Bas Hermans, Stefan Schwietzke, Daniel Zavala-Araiza, Huilin Chen, and Thomas Röckmann
EGUsphere, https://doi.org/10.5194/egusphere-2023-247, https://doi.org/10.5194/egusphere-2023-247, 2023
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In this study, we quantify CH4 emissions from onshore oil production sites in Romania at source and facility level using a combination of ground-based measurement techniques. We show that the total CH4 emissions in our studied areas are much higher than the reported emissions to UNFCCC. On the component scale, up to three-quarters of the detected emissions are related to operational venting. Our results suggest that O&G production infrastructure in Romania holds a massive mitigation potential.
Tianyu Zhai, Keding Lu, Haichao Wang, Shengrong Lou, Xiaorui Chen, Renzhi Hu, and Yuanhang Zhang
Atmos. Chem. Phys., 23, 2379–2391, https://doi.org/10.5194/acp-23-2379-2023, https://doi.org/10.5194/acp-23-2379-2023, 2023
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Particulate nitrate is a growing issue in air pollution. Based on comprehensive field measurement, we show heavy nitrate pollution in eastern China in summer. OH reacting with NO2 at daytime dominates nitrate formation on clean days, while N2O5 hydrolysis largely enhances and become comparable with that of OH reacting with O2 on polluted days (67.2 % and 30.2 %). Model simulation indicates that VOC : NOx = 2 : 1 is effective in mitigating the O3 and nitrate pollution coordinately.
Samuel J. Cliff, Will Drysdale, James D. Lee, Carole Helfter, Eiko Nemitz, Stefan Metzger, and Janet F. Barlow
Atmos. Chem. Phys., 23, 2315–2330, https://doi.org/10.5194/acp-23-2315-2023, https://doi.org/10.5194/acp-23-2315-2023, 2023
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Emissions of nitrogen oxides (NOx) to the atmosphere are an ongoing air quality issue. This study directly measures emissions of NOx and carbon dioxide from a tall tower in central London during the coronavirus pandemic. It was found that transport NOx emissions had reduced by >73 % since 2017 as a result of air quality policy and reduced congestion during coronavirus restrictions. During this period, central London was thought to be dominated by point-source heat and power generation emissions.
Laura Tomsche, Felix Piel, Tomas Mikoviny, Claus J. Nielsen, Hongyu Guo, Pedro Campuzano-Jost, Benjamin A. Nault, Melinda K. Schueneman, Jose L. Jimenez, Hannah Halliday, Glenn Diskin, Joshua P. DiGangi, John B. Nowak, Elizabeth B. Wiggins, Emily Gargulinski, Amber J. Soja, and Armin Wisthaler
Atmos. Chem. Phys., 23, 2331–2343, https://doi.org/10.5194/acp-23-2331-2023, https://doi.org/10.5194/acp-23-2331-2023, 2023
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Ammonia (NH3) is an important trace gas in the atmosphere and fires are among the poorly investigated sources. During the 2019 Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) aircraft campaign, we measured gaseous NH3 and particulate ammonium (NH4+) in smoke plumes emitted from 6 wildfires in the Western US and 66 small agricultural fires in the Southeastern US. We herein present a comprehensive set of emission factors of NH3 and NHx, where NHx = NH3 + NH4+.
Changmin Cho, Hendrik Fuchs, Andreas Hofzumahaus, Frank Holland, William J. Bloss, Birger Bohn, Hans-Peter Dorn, Marvin Glowania, Thorsten Hohaus, Lu Liu, Paul S. Monks, Doreen Niether, Franz Rohrer, Roberto Sommariva, Zhaofeng Tan, Ralf Tillmann, Astrid Kiendler-Scharr, Andreas Wahner, and Anna Novelli
Atmos. Chem. Phys., 23, 2003–2033, https://doi.org/10.5194/acp-23-2003-2023, https://doi.org/10.5194/acp-23-2003-2023, 2023
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With this study, we investigated the processes leading to the formation, destruction, and recycling of radicals for four seasons in a rural environment. Complete knowledge of their chemistry is needed if we are to predict the formation of secondary pollutants from primary emissions. The results highlight a still incomplete understanding of the paths leading to the formation of the OH radical, which has been observed in several other environments as well and needs to be further investigated.
Eric Förster, Harald Bönisch, Marco Neumaier, Florian Obersteiner, Andreas Zahn, Andreas Hilboll, Anna B. Kalisz Hedegaard, Nikos Daskalakis, Alexandros Panagiotis Poulidis, Mihalis Vrekoussis, Michael Lichtenstern, and Peter Braesicke
Atmos. Chem. Phys., 23, 1893–1918, https://doi.org/10.5194/acp-23-1893-2023, https://doi.org/10.5194/acp-23-1893-2023, 2023
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The airborne megacity campaign EMeRGe provided an unprecedented amount of trace gas measurements. We combine measured volatile organic compounds (VOCs) with trajectory-modelled emission uptakes to identify potential source regions of pollution. We also characterise the chemical fingerprints (e.g. biomass burning and anthropogenic signatures) of the probed air masses to corroborate the contributing source regions. Our approach is the first large-scale study of VOCs originating from megacities.
Jacob T. Shaw, Amy Foulds, Shona Wilde, Patrick Barker, Freya A. Squires, James Lee, Ruth Purvis, Ralph Burton, Ioana Colfescu, Stephen Mobbs, Samuel Cliff, Stéphane J.-B. Bauguitte, Stuart Young, Stefan Schwietzke, and Grant Allen
Atmos. Chem. Phys., 23, 1491–1509, https://doi.org/10.5194/acp-23-1491-2023, https://doi.org/10.5194/acp-23-1491-2023, 2023
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Flaring is used by the oil and gas sector to dispose of unwanted natural gas or for safety. However, few studies have assessed the efficiency with which the gas is combusted. We sampled flaring emissions from offshore facilities in the North Sea. Average measured flaring efficiencies were ~ 98 % but with a skewed distribution, including many flares of lower efficiency. NOx and ethane emissions were also measured. Inefficient flaring practices could be a target for mitigating carbon emissions.
Wiebke Scholz, Jiali Shen, Diego Aliaga, Cheng Wu, Samara Carbone, Isabel Moreno, Qiaozhi Zha, Wei Huang, Liine Heikkinen, Jean Luc Jaffrezo, Gaelle Uzu, Eva Partoll, Markus Leiminger, Fernando Velarde, Paolo Laj, Patrick Ginot, Paolo Artaxo, Alfred Wiedensohler, Markku Kulmala, Claudia Mohr, Marcos Andrade, Victoria Sinclair, Federico Bianchi, and Armin Hansel
Atmos. Chem. Phys., 23, 895–920, https://doi.org/10.5194/acp-23-895-2023, https://doi.org/10.5194/acp-23-895-2023, 2023
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Dimethyl sulfide (DMS), emitted from the ocean, is the most abundant biogenic sulfur emission into the atmosphere. OH radicals, among others, can oxidize DMS to sulfuric and methanesulfonic acid, which are relevant for aerosol formation. We quantified DMS and nearly all DMS oxidation products with novel mass spectrometric instruments for gas and particle phase at the high mountain station Chacaltaya (5240 m a.s.l.) in the Bolivian Andes in free tropospheric air after long-range transport.
Dirk Dienhart, Bettina Brendel, John N. Crowley, Philipp G. Eger, Hartwig Harder, Monica Martinez, Andrea Pozzer, Roland Rohloff, Jan Schuladen, Sebastian Tauer, David Walter, Jos Lelieveld, and Horst Fischer
Atmos. Chem. Phys., 23, 119–142, https://doi.org/10.5194/acp-23-119-2023, https://doi.org/10.5194/acp-23-119-2023, 2023
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Formaldehyde and hydroperoxide measurements were performed in the marine boundary layer around the Arabian Peninsula and highlight the Suez Canal and Arabian (Persian) Gulf as a hotspot of photochemical air pollution. A comparison with the EMAC model shows that the formaldehyde results match within a factor of 2, while hydrogen peroxide was overestimated by more than a factor of 5, which revealed enhanced HOx (OH+HO2) radicals in the simulation and an underestimation of dry deposition velocites.
Hao Guo, Clare M. Flynn, Michael J. Prather, Sarah A. Strode, Stephen D. Steenrod, Louisa Emmons, Forrest Lacey, Jean-Francois Lamarque, Arlene M. Fiore, Gus Correa, Lee T. Murray, Glenn M. Wolfe, Jason M. St. Clair, Michelle Kim, John Crounse, Glenn Diskin, Joshua DiGangi, Bruce C. Daube, Roisin Commane, Kathryn McKain, Jeff Peischl, Thomas B. Ryerson, Chelsea Thompson, Thomas F. Hanisco, Donald Blake, Nicola J. Blake, Eric C. Apel, Rebecca S. Hornbrook, James W. Elkins, Eric J. Hintsa, Fred L. Moore, and Steven C. Wofsy
Atmos. Chem. Phys., 23, 99–117, https://doi.org/10.5194/acp-23-99-2023, https://doi.org/10.5194/acp-23-99-2023, 2023
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We have prepared a unique and unusual result from the recent ATom aircraft mission: a measurement-based derivation of the production and loss rates of ozone and methane over the ocean basins. These are the key products of chemistry models used in assessments but have thus far lacked observational metrics. It also shows the scales of variability of atmospheric chemical rates and provides a major challenge to the atmospheric models.
Simone T. Andersen, Beth S. Nelson, Katie A. Read, Shalini Punjabi, Luis Neves, Matthew J. Rowlinson, James Hopkins, Tomás Sherwen, Lisa K. Whalley, James D. Lee, and Lucy J. Carpenter
Atmos. Chem. Phys., 22, 15747–15765, https://doi.org/10.5194/acp-22-15747-2022, https://doi.org/10.5194/acp-22-15747-2022, 2022
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The cycling of NO and NO2 is important to understand to be able to predict O3 concentrations in the atmosphere. We have used long-term measurements from the Cape Verde Atmospheric Observatory together with model outputs to investigate the cycling of nitrogen oxide (NO) and nitrogen dioxide (NO2) in very clean marine air. This study shows that we understand the processes occurring in very clean air, but with small amounts of pollution in the air, known chemistry cannot explain what is observed.
Pamela S. Rickly, Hongyu Guo, Pedro Campuzano-Jost, Jose L. Jimenez, Glenn M. Wolfe, Ryan Bennett, Ilann Bourgeois, John D. Crounse, Jack E. Dibb, Joshua P. DiGangi, Glenn S. Diskin, Maximilian Dollner, Emily M. Gargulinski, Samuel R. Hall, Hannah S. Halliday, Thomas F. Hanisco, Reem A. Hannun, Jin Liao, Richard Moore, Benjamin A. Nault, John B. Nowak, Jeff Peischl, Claire E. Robinson, Thomas Ryerson, Kevin J. Sanchez, Manuel Schöberl, Amber J. Soja, Jason M. St. Clair, Kenneth L. Thornhill, Kirk Ullmann, Paul O. Wennberg, Bernadett Weinzierl, Elizabeth B. Wiggins, Edward L. Winstead, and Andrew W. Rollins
Atmos. Chem. Phys., 22, 15603–15620, https://doi.org/10.5194/acp-22-15603-2022, https://doi.org/10.5194/acp-22-15603-2022, 2022
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Biomass burning sulfur dioxide (SO2) emission factors range from 0.27–1.1 g kg-1 C. Biomass burning SO2 can quickly form sulfate and organosulfur, but these pathways are dependent on liquid water content and pH. Hydroxymethanesulfonate (HMS) appears to be directly emitted from some fire sources but is not the sole contributor to the organosulfur signal. It is shown that HMS and organosulfur chemistry may be an important S(IV) reservoir with the fate dependent on the surrounding conditions.
Si-Wan Kim, Kyoung-Min Kim, Yujoo Jeong, Seunghwan Seo, Yeonsu Park, and Jeongyeon Kim
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-788, https://doi.org/10.5194/acp-2022-788, 2022
Revised manuscript accepted for ACP
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Surface ozone is a pollutant regulated for public health. This study derived the most up-to-date surface ozone trends in South Korea covering and found that South Korea has been a non-attainment area after 2010 based on the US EPA standard. However, the occurrences of high ozone condition decreased in spring during the COVID-19 pandemic potentially due to large reductions of ozone precursor concentrations in China and South Korea.
Cited articles
AMAP/UNEP: Technical Background Report for the Global Mercury Assessment
2013, Arctic Monitoring and Assessment Program, 2013.
Ambrose, J. L.: Improved methods for signal processing in measurements of
mercury by Tekran® 2537A and 2537B
instruments, Atmos. Meas. Tech., 10, 5063–5073,
https://doi.org/10.5194/amt-10-5063-2017, 2017.
Angot, H., Dion, I., Vogel, N., Legrand, M., Magand, O., and Dommergue, A.:
Multi-year record of atmospheric mercury at Dumont d'Urville, East Antarctic
coast: continental outflow and oceanic influences, Atmos. Chem. Phys., 16,
8265–8279, https://doi.org/10.5194/acp-16-8265-2016, 2016.
Ashbaugh, L. L., Malm, W. C., and Sadeh, W. Z.: A residence time probability
analysis of sulfur concentrations at Grand Canyon National Park, Atmos. Environ., 19, 1263–1270, 1985.
Bolch, T., Kulkarni, A., Kääb, A., Huggel, C., Paul, F., Cogley, J.,
Frey, H., Kargel, J. S., Fujita, K., and Scheel, M.: The state and fate of
Himalayan glaciers, Science, 336, 310–314, 2012.
Bonasoni, P., Laj, P., Marinoni, A., Sprenger, M., Angelini, F., Arduini, J.,
Bonafé, U., Calzolari, F., Colombo, T., Decesari, S., Di Biagio, C., di
Sarra, A. G., Evangelisti, F., Duchi, R., Facchini, MC., Fuzzi, S., Gobbi, G.
P., Maione, M., Panday, A., Roccato, F., Sellegri, K., Venzac, H., Verza, G.
P., Villani, P., Vuillermoz, E., and Cristofanelli, P.: Atmospheric Brown
Clouds in the Himalayas: first two years of continuous observations at the
Nepal Climate Observatory-Pyramid (5079 m), Atmos. Chem. Phys., 10,
7515–7531, https://doi.org/10.5194/acp-10-7515-2010, 2010.
BP Statistical Review of World Energy: BP statistical review of world energy
June 2018, available at:
http://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html
(last access: 7 May 2018), 2018.
Burger Chakraborty, L., Qureshi, A., Vadenbo, C., and Hellweg, S.:
Anthropogenic mercury flows in India and impacts of emission controls,
Environ. Sci. Technol., 47, 8105–8113, 2013.
Cai, X., Song, Y., Zhu, T., Lin, W., and Kang, L.: Glacier winds in the
Rongbuk Valley, north of Mount Everest: 2. Their role in vertical exchange
processes, J. Geophys. Res.-Atmos., 112, D11102, https://doi.org/10.1029/2006JD007868,
2007.
Chai, T., Stein, A., Ngan, F., and Draxler, R.: Inverse modeling with HYSPLIT
Lagrangian Dispersion Model-Tests and Evaluation using the Cross Appalachian
Tracer Experiment (CAPTEX) data, AGUFM, 2016.
Chai, T., Crawford, A., Stunder, B., Pavolonis, M. J., Draxler, R., and
Stein, A.: Improving volcanic ash predictions with the HYSPLIT dispersion
model by assimilating MODIS satellite retrievals, Atmos. Chem. Phys., 17,
2865–2879, https://doi.org/10.5194/acp-17-2865-2017, 2017.
Chen, G., Li, J., Chen, B., Wen, C., Yang, Q., Alsaedi, A., and Hayat, T.: An
overview of mercury emissions by global fuel combustion: the impact of
international trade, Renew. Sust. Energ. Rev. 65, 345–355, 2016.
Chen, P., Kang, S., Bai, J., Sillanpää, M., and Li, C.: Yak dung
combustion aerosols in the Tibetan Plateau: Chemical characteristics and
influence on the local atmospheric environment, Atmos. Res., 156, 58–66,
https://doi.org/10.1016/j.atmosres.2015.01.001, 2015.
Chen, P., Gao, Y., Lee, A. T., Cering, L., Shi, K., and Clark, S. G.:
Human–carnivore coexistence in Qomolangma (Mt. Everest) Nature Reserve,
China: Patterns and compensation, Biol. Conserv., 197, 18–26, 2016.
Chen, W.-K., Li, T.-C., Sheu, G.-R., Lin, N.-H., Chen, L.-Y., and Yuan,
C.-S.: Correlation analysis, transportation mode of atmospheric mercury and
criteria air pollutants, with meteorological parameters at two remote sites
of mountain and offshore island in Asia, Aerosol Air Qual. Res., 16,
2692–2705, 2016.
Das, R., Wang, X., Khezri, B., Webster, R. D., Sikdar, P. K., and Datta, S.:
Mercury isotopes of atmospheric particle bound mercury for source
apportionment study in urban Kolkata, India, Elem. Sci. Anth., 4, p.98, 2016.
Davies, D. K., Ilavajhala, S.,
Wong, M. M., and Justice, C. O.: Fire information
for resource management system: archiving and distributing MODIS active fire data, IEEE T. Geosci. Remote, 47, 72–79, 2009.
de Foy, B., Tong, Y., Yin, X., Zhang, W., Kang, S., Zhang, Q., Zhang, G.,
Wang, X., and Schauer, J. J.: First field-based atmospheric observation of
the reduction of reactive mercury driven by sunlight, Atmos. Environ., 134,
27–39, 2016.
Duan, L., Wang, X., Wang, D., Duan, Y., Cheng, N., and Xiu, G.: Atmospheric
mercury speciation in Shanghai, China, Sci. Total Environ., 578, 460–468,
2017.
Ebinghaus, R., Kock, H., Coggins, A., Spain, T., Jennings, S., and Temme, C.:
Long-term measurements of atmospheric mercury at Mace Head, Irish west coast,
between 1995 and 2001, Atmos. Environ., 36, 5267–5276, 2002.
Faïn, X., Grangeon, S., Bahlmann, E., Fritsche, J., Obrist, D.,
Dommergue, A., Ferrari, C. P., Cairns, W., Ebinghaus, R., and Barbante, C.:
Diurnal production of gaseous mercury in the alpine snowpack before snowmelt,
J. Geophys. Res.-Atmos., 112, 2007.
Faïn, X., Obrist, D., Hallar, A. G., Mccubbin, I., and Rahn, T.: High
levels of reactive gaseous mercury observed at a high elevation research
laboratory in the Rocky Mountains, Atmos. Chem. Phys., 9, 8049–8060,
https://doi.org/10.5194/acp-9-8049-2009, 2009.
Finley, B., Swartzendruber, P., and Jaffe, D.: Particulate mercury emissions
in regional wildfire plumes observed at the Mount Bachelor Observatory,
Atmos. Environ., 43, 6074–6083, 2009.
Forouzanfar, M. H., Alexander, L., Anderson, H. R., Bachman, V. F., Biryukov,
S., Brauer, M., Burnett, R., Casey, D., Coates, M. M., and Cohen, A.: Global,
regional, and national comparative risk assessment of 79 behavioural,
environmental and occupational, and metabolic risks or clusters of risks in
188 countries, 1990–2013: a systematic analysis for the Global Burden of
Disease Study 2013, The Lancet, 386, 2287–2323, 2015.
Fu, X., Feng, X., Zhu, W., Wang, S., and Lu, J.: Total gaseous mercury
concentrations in ambient air in the eastern slope of Mt. Gongga,
South-Eastern fringe of the Tibetan plateau, China, Atmos. Environ., 42,
970–979, 2008.
Fu, X. W., Feng, X., Dong, Z. Q., Yin, R. S., Wang, J. X., Yang, Z. R., and
Zhang, H.: Atmospheric gaseous elemental mercury (GEM) concentrations and
mercury depositions at a high-altitude mountain peak in south China, Atmos.
Chem. Phys., 10, 2425–2437, https://doi.org/10.5194/acp-10-2425-2010, 2010.
Fu, X. W., Feng, X., Liang, P., Deliger, Zhang, H., Ji, J., and Liu, P.:
Temporal trend and sources of speciated atmospheric mercury at Waliguan GAW
station, Northwestern China, Atmos. Chem. Phys., 12, 1951–1964,
https://doi.org/10.5194/acp-12-1951-2012, 2012a.
Fu, X. W., Feng, X., Shang, L. H., Wang, S. F., and Zhang, H.: Two years of
measurements of atmospheric total gaseous mercury (TGM) at a remote site in
Mt. Changbai area, Northeastern China, Atmos. Chem. Phys., 12, 4215–4226,
https://doi.org/10.5194/acp-12-4215-2012, 2012b.
Gay, D. A., Schmeltz, D., Prestbo, E., Olson, M., Sharac, T., and Tordon, R.:
The Atmospheric Mercury Network: measurement and initial examination of an
ongoing atmospheric mercury record across North America, Atmos. Chem. Phys.,
13, 11339–11349, https://doi.org/10.5194/acp-13-11339-2013, 2013.
Ge, J., You, Q., and Zhang, Y.: The influence of the Asian summer monsoon
onset on the northward movement of the South Asian high towards the Tibetan
Plateau and its thermodynamic mechanism, Int. J. Climatol., 38, 543–553,
2018.
Giglio, L., Descloitres, J., Justice, C. O.,
and Kaufman, Y. J.: An enhanced contextual fire
detection algorithm for MODIS, Remote. Sens. Environ., 87, 273–282, 2003.
Gratz, L., Esposito, G., Dalla Torre, S., Cofone, F., Pirrone, N., and
Sprovieri, F.: First Measurements of Ambient Total Gaseous Mercury (TGM) at
the EvK2CNR Pyramid Observatory in Nepal, E3S Web of Conferences, 2013.
Guo, J., Kang, S., Huang, J., Zhang, Q., Rupakheti, M., Sun, S., Tripathee,
L., Rupakheti, D., Panday, A. K., and Sillanpää, M.:
Characterizations of atmospheric particulate-bound mercury in the Kathmandu
Valley of Nepal, South Asia, Sci. Total Environ., 579, 1240–1248, 2017.
Hall, D. K., Riggs, G. A., Foster, J. L., and Kumar, S. V.: Development and
evaluation of a cloud-gap-filled MODIS daily snow-cover product, Remote Sens.
Environ., 114, 496–503, 2010.
Han, S., Bian, H., Tie, X., Xie, Y., Sun, M., and Liu, A.: Impact of
nocturnal planetary boundary layer on urban air pollutants: Measurements from
a 250-m tower over Tianjin, China, J. Hazard. Mater., 162,
264–269, 2009.
Holmes, C. D., Jacob, D. J., Corbitt, E. S., Mao, J., Yang, X., Talbot, R.,
and Slemr, F.: Global atmospheric model for mercury including oxidation by
bromine atoms, Atmos. Chem. Phys., 10, 12037–12057,
https://doi.org/10.5194/acp-10-12037-2010, 2010.
Horowitz, H. M., Jacob, D. J., Zhang, Y., Dibble, T. S., Slemr, F., Amos, H.
M., Schmidt, J. A., Corbitt, E. S., Marais, E. A., and Sunderland, E. M.: A
new mechanism for atmospheric mercury redox chemistry: implications for the
global mercury budget, Atmos. Chem. Phys., 17, 6353–6371,
https://doi.org/10.5194/acp-17-6353-2017, 2017.
Huang, J., Lyman, S. N., Hartman, J. S., and Gustin, M. S.: A review of
passive sampling systems for ambient air mercury measurements, Environ. Sci.-Proc. Imp., 16, 374–392, https://doi.org/10.1039/c3em00501a, 2014.
Huang, J., Kang, S., Guo, J., Zhang, Q., Cong, Z., Sillanpää, M.,
Zhang, G., Sun, S., and Tripathee, L.: Atmospheric particulate mercury in
Lhasa city, Tibetan Plateau, Atmos. Environ., 142, 433–441, 2016.
Hurst, T. and Davis, C.: Forecasting volcanic ash deposition using HYSPLIT,
Journal of Applied Volcanology, 6, 5–13, 2017.
Islam, M. F., Majumder, S. S., Al Mamun, A., Khan, M. B., Rahman, M. A., and
Salam, A.: Trace metals concentrations at the atmosphere particulate matters
in the Southeast Asian Mega City (Dhaka, Bangladesh), Open Journal of Air
Pollution, 4, 86–98, 2015.
Jen, Y.-H., Chen, W.-H., Hung, C.-H., Yuan, C.-S., and Ie, I.-R.: Field
measurement of total gaseous mercury and its correlation with meteorological
parameters and criteria air pollutants at a coastal site of the Penghu
Islands, Aerosol Air Qual. Res., 14, 364–375, 2014.
Ji, Z., Kang, S., Zhang, D., Zhu, C., Wu, J., and Xu, Y.: Simulation of the
anthropogenic aerosols over South Asia and their effects on Indian summer
monsoon, Clim. Dynam., 36, 1633–1647, 2011.
Kaiser, A., Scheifinger, H., Spangl, W., Weiss, A., Gilge, S., Fricke, W.,
Ries, L., Cemas, D., and Jesenovec, B.: Transport of nitrogen oxides, carbon
monoxide and ozone to the alpine global atmosphere watch stations
Jungfraujoch (Switzerland), Zugspitze and Hohenpeißenberg (Germany),
Sonnblick (Austria) and Mt. Krvavec (Slovenia), Atmos. Environ., 41,
9273–9287, 2007.
Karthik, R., Paneerselvam, A., Ganguly, D., Hariharan, G., Srinivasalu, S.,
Purvaja, R., and Ramesh, R.: Temporal variability of atmospheric Total
Gaseous Mercury and its correlation with meteorological parameters at a
high-altitude station of the South India, Atmos. Pollut. Res., 8,
164–173, 2017.
Kellerhals, M., Beauchamp, S., Belzer, W., Blanchard, P., Froude, F., Harvey,
B., McDonald, K., Pilote, M., Poissant, L., and Puckett, K.: Temporal and
spatial variability of total gaseous mercury in Canada: results from the
Canadian Atmospheric Mercury Measurement Network (CAMNet), Atmos. Environ., 37, 1003–1011, 2003.
Kim, E., Hopke, P. K., Kenski, D. M., and Koerber, M.: Sources of fine
particles in a rural midwestern US area, Environ. Sci. Technol., 39, 4953–4960, 2005.
Kotlia, B. S., Singh, A. K., Joshi, L. M., and Dhaila, B. S.: Precipitation
variability in the Indian Central Himalaya during last ca. 4000 years
inferred from a speleothem record: Impact of Indian Summer Monsoon (ISM) and
Westerlies, Quatern. Int., 371, 244–253, 2015.
Landis, M. S., Stevens, R. K., Schaedlich, F., and Prestbo, E. M.:
Development and characterization of an annular denuder methodology for the
measurement of divalent inorganic reactive gaseous mercury in ambient air,
Environ. Sci. Technol., 36, 3000–3009, 2002.
Li, C., Bosch, C., Kang, S., Andersson, A., Chen, P., Zhang, Q., Cong, Z.,
Chen, B., Qin, D., and Gustafsson, Ö.: Sources of black carbon to the
Himalayan–Tibetan Plateau glaciers, Nat. Commun., 7, 12574,
https://doi.org/10.1038/ncomms12574, 2016.
Li, M., Dai, Y., Ma, Y., Zhong, L., and Lu, S.: Analysis on structure of
atmospheric boundary layer and energy exchange of surface layer over Mount
Qomolangma region, Plateau Meteorology, 25, 807–813, 2006.
Lindberg, S., Bullock, R., Ebinghaus, R., Engstrom, D., Feng, X., Fitzgerald,
W., Pirrone, N., Prestbo, E., and Seigneur, C.: A synthesis of progress and
uncertainties in attributing the sources of mercury in deposition, AMBIO, 36, 19–33, 2007.
Lindberg, S. A. and Stratton, W.: Atmospheric mercury speciation:
concentrations and behavior of reactive gaseous mercury in ambient air,
Environ. Sci. Technol., 32, 49–57, 1998.
Lynam, M. M., Dvonch, J. T., Hall, N. L., Morishita, M., and Barres, J. A.:
Spatial patterns in wet and dry deposition of atmospheric mercury and trace
elements in central Illinois, USA, Environ. Sci. Pollut. R., 21, 4032–4043, 2014.
Mondol, M., Khaled, M., Chamon, A., and Ullah, S.: Trace metal concentration
in atmospheric aerosols in some city areas of Bangladesh, J. Sci. Ind. Res., 49, 263–270, 2014.
Mukherjee, A. B., Bhattacharya, P., Sarkar, A., and Zevenhoven, R.: Mercury
emissions from industrial sources in India and its effects in the
environment, in: Mercury Fate and Transport in the Global Atmosphere, edited
by: Mason, R. and Pirrone, N., Springer, 81–112, 2009.
Nair, U. S., Wu, Y., Walters, J., Jansen, J., and Edgerton, E. S.: Diurnal
and seasonal variation of mercury species at coastal-suburban, urban, and
rural sites in the southeastern United States, Atmos. Environ., 47,
499–508, 2012.
Nie, Y., Zhang, Y., Liu, L., and Zhang, J.: Monitoring glacier change based
on remote sensing in the Mt. Qomolangma National Nature Preserve, 1976–2006,
Acta Geographica Sinica, 65, 13–28, 2010.
Panthi, J., Dahal, P., Shrestha, M. L., Aryal, S., Krakauer, N. Y.,
Pradhanang, S. M., Lakhankar, T., Jha, A. K., Sharma, M., and Karki, R.:
Spatial and temporal variability of rainfall in the Gandaki River Basin of
Nepal Himalaya, Climate, 3, 210–226, 2015.
Pacyna, J. M., Travnikov, O., De Simone, F., Hedgecock, I. M., Sundseth, K.,
Pacyna, E. G., Steenhuisen, F., Pirrone, N., Munthe, J., and Kindbom, K.:
Current and future levels of mercury atmospheric pollution on a global scale,
Atmos. Chem. Phys., 16, 12495–12511, https://doi.org/10.5194/acp-16-12495-2016, 2016.
Pokhrel, B., Gong, P., Wang, X., Gao, S., Wang, C., and Yao, T.: Sources and
environmental processes of polycyclic aromatic hydrocarbons and mercury
along a southern slope of the Central Himalayas, Nepal, Environ. Sci. Pollut. R., 23, 13843–13852, 2016.
Polissar, A., Hopke, P., Paatero, P., Kaufmann, Y., Hall, D., Bodhaine, B.,
Dutton, E., and Harris, J.: The aerosol at Barrow, Alaska: long-term trends
and source locations, Atmos. Environ., 33, 2441–2458, 1999.
Prestbo, E. M. and Gay, D. A.: Wet deposition of mercury in the US and
Canada, 1996–2005: Results and analysis of the NADP mercury deposition
network (MDN), Atmos. Environ., 43, 4223–4233, 2009.
Qiu, J.: China: the third pole, Nature News, 454, 393–396, 2008.
Quan, J., Gao, Y., Zhang, Q., Tie, X., Cao, J., Han, S., Meng, J., Chen, P.,
and Zhao, D.: Evolution of planetary boundary layer under different weather
conditions, and its impact on aerosol concentrations, Particuology, 11,
34–40, 2013.
Rahman, M. M., Mahamud, S., and Thurston, G. D.: Recent spatial gradients and
time trends in Dhaka, Bangladesh air pollution and their human health
implications, J. Air Waste Ma., 1–24, https://doi.org/10.1080/10962247.2018.1548388,
2018.
Rana, M. M., Sulaiman, N., Sivertsen, B., Khan, M. F., and Nasreen, S.:
Trends in atmospheric particulate matter in Dhaka, Bangladesh, and the
vicinity, Environ. Sci. Pollut. R., 23, 17393–17403,
2016.
Rhode, D., Madsen, D. B., Brantingham, P. J., and Dargye, T.: Yaks, yak dung,
and prehistoric human habitation of the Tibetan Plateau, Developments in Quaternary Sciences, 9, 205–224, 2007.
Rupakheti, D., Adhikary, B., Praveen, P. S., Rupakheti, M., Kang, S., Mahata,
K. S., Naja, M., Zhang, Q., Panday, A. K., and Lawrence, M. G.: Pre-monsoon
air quality over Lumbini, a world heritage site along the Himalayan
foothills, Atmos. Chem. Phys., 17, 11041–11063,
https://doi.org/10.5194/acp-17-11041-2017, 2017.
Rutter, A. P., Schauer, J. J., Lough, G. C., Snyder, D. C., Kolb, C. J., Von
Klooster, S., Rudolf, T., Manolopoulos, H., and Olson, M. L.: A comparison of
speciated atmospheric mercury at an urban center and an upwind rural
location, J. Environ. Monitor., 10, 102–108, 2008.
Seigneur, C., Vijayaraghavan, K., and Lohman, K.: Atmospheric mercury
chemistry: Sensitivity of global model simulations to chemical reactions, J.
Geophys. Res.-Atmos., 111, D22306, 2006.
Selin, N. E.: Global biogeochemical cycling of mercury: a review, Annu. Rev. Env. Resour., 34, 43–63, 2009.
Sharma, D. C.: Concern over mercury pollution in India, Lancet, 362, 1050,
https://doi.org/10.1016/S0140-6736(03)14456-X, 2003.
Simone, F. D., Gencarelli, C. N., Hedgecock, I. M., and Pirrone, N.: A
modeling comparison of mercury deposition from current anthropogenic mercury
emission inventories, Environ. Sci. Technol., 50, 5154–5162,
2016.
Slemr, F., Angot, H., Dommergue, A., Magand, O., Barret, M., Weigelt, A.,
Ebinghaus, R., Brunke, E.-G., Pfaffhuber, K. A., Edwards, G., Howard, D.,
Powell, J., Keywood, M., and Wang, F.: Comparison of mercury concentrations
measured at several sites in the Southern Hemisphere, Atmos. Chem. Phys., 15,
3125–3133, https://doi.org/10.5194/acp-15-3125-2015, 2015.
Slemr, F., Weigelt, A., Ebinghaus, R., Kock, H. H., Bödewadt, J.,
Brenninkmeijer, C. A. M., Rauthe-Schöch, A., Weber, S., Hermann, M.,
Becker, J., Zahn, A., and Martinsson, B.: Atmospheric mercury measurements
onboard the CARIBIC passenger aircraft, Atmos. Meas. Tech., 9, 2291–2302,
https://doi.org/10.5194/amt-9-2291-2016, 2016.
Song, Y., Zhu, T., Cai, X., Lin, W., and Kang, L.: Glacier winds in the
Rongbuk Valley, north of Mount Everest: 1. Meteorological modeling with
remote sensing data, J. Geophys. Res.-Atmos., 112, D11101,
https://doi.org/10.1029/2006JD007867, 2007.
Sprovieri, F., Pirrone, N., Bencardino, M., D'Amore, F., Carbone, F.,
Cinnirella, S., Mannarino, V., Landis, M., Ebinghaus, R., Weigelt, A.,
Brunke, E.-G., Labuschagne, C., Martin, L., Munthe, J., Wängberg, I.,
Artaxo, P., Morais, F., Barbosa, H. D. M. J., Brito, J., Cairns, W.,
Barbante, C., Diéguez, M. D. C., Garcia, P. E., Dommergue, A., Angot, H.,
Magand, O., Skov, H., Horvat, M., Kotnik, J., Read, K. A., Neves, L. M.,
Gawlik, B. M., Sena, F., Mashyanov, N., Obolkin, V., Wip, D., Feng, X. B.,
Zhang, H., Fu, X., Ramachandran, R., Cossa, D., Knoery, J., Marusczak, N.,
Nerentorp, M., and Norstrom, C.: Atmospheric mercury concentrations observed
at ground-based monitoring sites globally distributed in the framework of the
GMOS network, Atmos. Chem. Phys., 16, 11915–11935,
https://doi.org/10.5194/acp-16-11915-2016, 2016.
Stein, A., Draxler, R. R., Rolph, G. D., Stunder, B. J., Cohen, M., and Ngan,
F.: NOAA's HYSPLIT atmospheric transport and dispersion modeling system, B.
Am. Meteorol. Soc., 96, 2059–2077, 2015.
Streets, D. G., Devane, M. K., Lu, Z., Bond, T. C., Sunderland, E. M., and
Jacob, D. J.: All-time releases of mercury to the atmosphere from human
activities, Environ. Sci. Technol., 45, 10485–10491, 2011.
Swartzendruber, P., Jaffe, D., and Finley, B.: Improved fluorescence peak
integration in the Tekran 2537 for applications with sub-optimal sample
loadings, Atmos. Environ., 43, 3648–3651, 2009.
Tang, Y., Wang, S., Wu, Q., Liu, K., Wang, L., Li, S., Gao, W., Zhang, L.,
Zheng, H., Li, Z., and Hao, J.: Recent decrease trend of atmospheric mercury
concentrations in East China: the influence of anthropogenic emissions,
Atmos. Chem. Phys., 18, 8279–8291, https://doi.org/10.5194/acp-18-8279-2018,
2018.
Tie, X., Madronich, S., Li, G., Ying, Z., Zhang, R., Garcia, A. R.,
Lee-Taylor, J., and Liu, Y.: Characterizations of chemical oxidants in Mexico
City: A regional chemical dynamical model (WRF-Chem) study, Atmos. Environ.,
41, 1989–2008, 2007.
Tong, Y., Yin, X., Lin, H., Wang, H., Deng, C., Chen, L., Li, J., Zhang, W.,
Schauer, J. J., and Kang, S.: Recent Decline of Atmospheric Mercury Recorded
by Androsace tapete on the Tibetan Plateau, Environ. Sci. Technol., 50,
13224–13231, 2016.
Travnikov, O., Angot, H., Artaxo, P., Bencardino, M., Bieser, J., D'Amore,
F., Dastoor, A., De Simone, F., Diéguez, M. D. C., Dommergue, A.,
Ebinghaus, R., Feng, X. B., Gencarelli, C. N., Hedgecock, I. M., Magand, O.,
Martin, L., Matthias, V., Mashyanov, N., Pirrone, N., Ramachandran, R., Read,
K. A., Ryjkov, A., Selin, N. E., Sena, F., Song, S., Sprovieri, F., Wip, D.,
Wängberg, I., and Yang, X.: Multi-model study of mercury dispersion in the
atmosphere: atmospheric processes and model evaluation, Atmos. Chem. Phys.,
17, 5271–5295, https://doi.org/10.5194/acp-17-5271-2017, 2017.
Venter, A. D., Beukes, J. P., van Zyl, P. G., Brunke, E.-G., Labuschagne, C.,
Slemr, F., Ebinghaus, R., and Kock, H.: Statistical exploration of gaseous
elemental mercury (GEM) measured at Cape Point from 2007 to 2011, Atmos.
Chem. Phys., 15, 10271–10280, https://doi.org/10.5194/acp-15-10271-2015,
2015.
Wang, B., Wu, R., and Lau, K.: Interannual variability of the Asian summer
monsoon: Contrasts between the Indian and the western North Pacific–East
Asian monsoons, J. Climate, 14, 4073–4090, 2001.
Wang, C., Wang, X., Gong, P., and Yao, T.: Long-term trends of atmospheric
organochlorine pollutants and polycyclic aromatic hydrocarbons over the
southeastern Tibetan Plateau, Sci. Total Environ., 624, 241–249, 2018.
Wang, X., Gong, P., Sheng, J., Joswiak, D. R., and Yao, T.: Long-range
atmospheric transport of particulate Polycyclic Aromatic Hydrocarbons and the
incursion of aerosols to the southeast Tibetan Plateau, Atmos. Environ., 115,
124–131, 2015.
Ward Jr., J. H.: Hierarchical grouping to optimize an objective function, J.
Am. Stat. Assoc., 58, 236–244, 1963.
Weiss-Penzias, P., Gustin, M. S., and Lyman, S. N.: Observations of speciated
atmospheric mercury at three sites in Nevada: Evidence for a free
tropospheric source of reactive gaseous mercury, J. Geophys. Res.-Atmos.,
114, D14302, https://doi.org/10.1029/2008JD011607, 2009.
World Bank: China – Capacity Strengthening for Implementation of Minamata
Convention on Mercury Project, Washington, DC, World Bank Group, 2016.
Wu, Q., Wang, S., Li, G., Liang, S., Lin, C.-J., Wang, Y., Cai, S., Liu, K.,
and Hao, J.: Temporal trend and spatial distribution of speciated atmospheric
mercury emissions in China during 1978–2014, Environ. Sci. Technol., 50,
13428–13435, 2016.
Wu, Q., Li, G., Wang, S., Liu, K., and Hao, J.: Mitigation options of
atmospheric Hg emissions in China, Environ. Sci. Technol., 52, 12368–12375,
2018.
Xiao, Q., Saikawa, E., Yokelson, R. J., Chen, P., Li, C., and Kang, S.:
Indoor air pollution from burning yak dung as a household fuel in Tibet,
Atmos. Environ., 102, 406–412, https://doi.org/10.1016/j.atmosenv.2014.11.060, 2015.
Xu, B., Cao, J., Hansen, J., Yao, T., Joswia, D. R., Wang, N., Wu, G., Wang,
M., Zhao, H., and Yang, W.: Black soot and the survival of Tibetan glaciers,
P. Natl. Acad. Sci., 106, 22114–22118, 2009.
Yang, J., Kang, S., Ji, Z., and Chen, D.: Modeling the origin of
anthropogenic black carbon and its climatic effect over the Tibetan Plateau
and surrounding regions, J. Geophys. Res.-Atmos., 123, 671–692, 2018.
Yao, T., Thompson, L. G., Mosbrugger, V., Zhang, F., Ma, Y., Luo, T., Xu, B.,
Yang, X., Joswiak, D. R., and Wang, W.: Third pole environment (TPE),
Environmental Development, 3, 52–64, 2012.
Yin, X., Kang, S., de Foy, B., Ma, Y., Tong, Y., Zhang, W., Wang, X., Zhang,
G., and Zhang, Q.: Multi-year monitoring of atmospheric total gaseous mercury
at a remote high-altitude site (Nam Co, 4730 m a.s.l.) in the inland
Tibetan Plateau region, Atmos. Chem. Phys., 18, 10557–10574,
https://doi.org/10.5194/acp-18-10557-2018, 2018.
Zhang, H., Fu, X. W., Lin, C.-J., Wang, X., and Feng, X. B.: Observation and
analysis of speciated atmospheric mercury in Shangri-La, Tibetan Plateau,
China, Atmos. Chem. Phys., 15, 653–665,
https://doi.org/10.5194/acp-15-653-2015, 2015.
Zhang, H., Fu, X., Lin, C.-J., Shang, L., Zhang, Y., Feng, X., and Lin, C.:
Monsoon-facilitated characteristics and transport of atmospheric mercury at a
high-altitude background site in southwestern China, Atmos. Chem. Phys., 16,
13131–13148, https://doi.org/10.5194/acp-16-13131-2016, 2016.
Zhang, L., Wang, S. X., Wang, L., and Hao, J. M.: Atmospheric mercury
concentration and chemical speciation at a rural site in Beijing, China:
implications of mercury emission sources, Atmos. Chem. Phys., 13,
10505–10516, https://doi.org/10.5194/acp-13-10505-2013, 2013.
Zhang, R., Wang, H., Qian, Y., Rasch, P. J., Easter, R. C., Ma, P.-L., Singh,
B., Huang, J., and Fu, Q.: Quantifying sources, transport, deposition, and
radiative forcing of black carbon over the Himalayas and Tibetan Plateau,
Atmos. Chem. Phys., 15, 6205–6223, https://doi.org/10.5194/acp-15-6205-2015,
2015.
Zhang, Y., Jacob, D. J., Horowitz, H. M., Chen, L., Amos, H. M., Krabbenhoft,
D. P., Slemr, F., Louis, V. L. S., and Sunderland, E. M.: Observed decrease
in atmospheric mercury explained by global decline in anthropogenic
emissions, P. Natl. Acad. Sci., 113, 526–531, 2016.
Zhu, T., Lin, W., Song, Y., Cai, X., Zou, H., Kang, L., Zhou, L., and
Akimoto, H.: Downward transport of ozone-rich air near Mt. Everest, Geophys.
Res. Lett., 33, L23809, https://doi.org/10.1029/2006GL027726, 2006.
Short summary
Located in the world's
third Poleand a remote region connecting the Indian and Eurasian plates, Qomolangma National Nature Preserve is an ideal region to study the long-range transport of atmospheric pollutants. Covering both the pre-Indian summer monsoon and Indian summer monsoon periods, our measurement and modeling results have addressed the need for more specific identification of Hg sources in this area and the importance of international cooperation regarding global mercury controls.
Located in the world's
third Poleand a remote region connecting the Indian and Eurasian plates,...
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