Articles | Volume 22, issue 9
https://doi.org/10.5194/acp-22-6327-2022
© Author(s) 2022. 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-22-6327-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 May 2022
Research article |
| 17 May 2022
| 17 May 2022
An investigation into the chemistry of HONO in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda
Wadsworth Center, New York State Department of Health, Albany, NY, USA
Youfeng Wang
Wadsworth Center, New York State Department of Health, Albany, NY, USA
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
Xianliang Zhou
CORRESPONDING AUTHOR
Wadsworth Center, New York State Department of Health, Albany, NY, USA
Department of Environmental Health Sciences, University at Albany, State University of New York, Albany, NY, USA
Yasin F. Elshorbany
Atmospheric Chemistry and Climate Laboratory, College of Arts & Sciences, University of South Florida, St. Petersburg, FL, USA
Chunxiang Ye
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
Matthew Hayden
Bermuda Institute of Ocean Sciences, St George's, Bermuda
Andrew J. Peters
Bermuda Institute of Ocean Sciences, St George's, Bermuda
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Qiqi Mo, Longjie Wen, Gang Zhao, Chunxiang Ye, Jie Sun, Weili Lin, Fengjun Shen, Tong Liu, Yicheng Gao, Yi Chen, Tiantian Zhang, and Tong Zhu
EGUsphere, https://doi.org/10.5194/egusphere-2026-1628, https://doi.org/10.5194/egusphere-2026-1628, 2026
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Using field observations in Lhasa, a high-altitude city on the Tibetan Plateau, we show that new particle formation occurs frequently and contributes substantially to cloud-forming particles. Event frequency was higher during the monsoon season than during the pre-monsoon period, indicating clear seasonal differences in the processes controlling particle formation and growth. These findings improve understanding of climate effects in urban plateau environments.
Lingling Deng, Yuhan Chen, Chunxiang Ye, Rui Wang, Ruhai Wang, Zehua Fu, Hongfang Zhao, and Dianming Wu
EGUsphere, https://doi.org/10.5194/egusphere-2026-1913, https://doi.org/10.5194/egusphere-2026-1913, 2026
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Soil reactive nitrogen (Nr) gas emissions from the Tibetan Plateau remain poorly quantified, especially nitrous acid (HONO) and nitrogen oxides (NOx). We find soil HONO and NOx emissions are substantial across different land use types, with annual emissions of 7.0 ± 3.4 and 20.3 ± 7.0 Gg N yr−1, respectively. Soil HONO emissions contribute approximately 10.5 % of the external daytime atmospheric HONO sources and modulate the regional atmospheric chemical balance by elevating the HONO/NOx ratio.
Lewis Marden, Marvin D. Shaw, Stephen J. Andrews, Maya Zmajkovic, Phil Rund, Becky Alexander, Joel Thornton, Andrew Peters, Peter Karadakov, and Lucy J. Carpenter
Atmos. Meas. Tech., 19, 2715–2735, https://doi.org/10.5194/amt-19-2715-2026, https://doi.org/10.5194/amt-19-2715-2026, 2026
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Hypoiodous acid (HOI) and molecular iodine (I2) are the dominant precursors of reactive gaseous iodine, which plays an important role in the atmospheric oxidative capacity and in aerosol formation. However, difficulties in the quantification of HOI and I2 mean that very few measurements are available. This work describes a novel calibration method for HOI and reports the detection of HOI and I2 in the marine boundary layer using Br- chemical ionisation mass spectrometry.
Tiantian Zhang, Peng Zuo, Yi Chen, Tong Liu, Linghan Zeng, Weili Lin, and Chunxiang Ye
Atmos. Chem. Phys., 25, 16331–16346, https://doi.org/10.5194/acp-25-16331-2025, https://doi.org/10.5194/acp-25-16331-2025, 2025
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During the 2022 Beijing Winter Olympics, we conducted field observations of N2O5. By comparing pre- and post-Olympic pollutant levels, we evaluated the impact of emission reductions on nocturnal chemistry. The results showed that the reactivity of nitric oxide (NO) and volatile organic compounds (VOCs) with NO3 decreased, and that the heterogeneous uptake of N2O5 played a critical role in nocturnal nitrate formation.
Zhongyi Zhang, Chunxiang Ye, Yichao Wu, Tao Zhou, Pengfei Chen, Shichang Kang, Chong Zhang, Zhuang Jiang, and Lei Geng
Atmos. Chem. Phys., 25, 10625–10641, https://doi.org/10.5194/acp-25-10625-2025, https://doi.org/10.5194/acp-25-10625-2025, 2025
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This study reveals unexpectedly high levels of particulate nitrite at the Base Camp of Mt. Qomolangma, which overwhelmingly exists in coarse mode, and demonstrates that lofted surface soil and long-range transported pollutants contribute to the high levels of nitrite. The high particulate nitrite is likely to participate in atmospheric reactive nitrogen cycling through gas-particle partitioning or photolysis, leading to production of HONO, OH and NO and thereby influencing oxidation chemistry.
Gang Zhao, Ping Tian, Chunxiang Ye, Weili Lin, Yicheng Gao, Jie Sun, Yi Chen, Fengjun Shen, and Tong Zhu
EGUsphere, https://doi.org/10.5194/egusphere-2025-3012, https://doi.org/10.5194/egusphere-2025-3012, 2025
Preprint archived
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Understanding aerosol size distribution helps us predict how aerosols move, grow, and interact with the environment and climate. We used "maximum entropy" to demonstrate that the aerosol particle number size distribution would follow the Weibull distribution in the clean atmosphere during the new particle formation and growth process. The observations showed good consistency with the theoretical analysis.
Chengzhi Xing, Cheng Liu, Chunxiang Ye, Jingkai Xue, Hongyu Wu, Xiangguang Ji, Jinping Ou, and Qihou Hu
Atmos. Chem. Phys., 24, 10093–10112, https://doi.org/10.5194/acp-24-10093-2024, https://doi.org/10.5194/acp-24-10093-2024, 2024
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We identified the contributions of ozone (O3) and nitrous acid (HONO) to the production rates of hydroxide (OH) in vertical space on the Tibetan Plateau (TP). A new insight was offered: the contributions of HONO and O3 to the production rates of OH on the TP are even greater than in lower-altitudes areas. This study enriches the understanding of vertical distribution of atmospheric components and explains the strong atmospheric oxidation capacity (AOC) on the TP.
Xi Cheng, Yong Jie Li, Yan Zheng, Keren Liao, Theodore K. Koenig, Yanli Ge, Tong Zhu, Chunxiang Ye, Xinghua Qiu, and Qi Chen
Atmos. Chem. Phys., 24, 2099–2112, https://doi.org/10.5194/acp-24-2099-2024, https://doi.org/10.5194/acp-24-2099-2024, 2024
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In this study we conducted laboratory measurements to investigate the formation of gas-phase oxygenated organic molecules (OOMs) from six aromatic volatile organic compounds (VOCs). We provide a thorough analysis on the effects of precursor structure (substituents and ring numbers) on product distribution and highlight from a laboratory perspective that heavy (e.g., double-ring) aromatic VOCs are important in initial particle growth during secondary organic aerosol formation.
Shuzheng Guo, Chunxiang Ye, Weili Lin, Yi Chen, Limin Zeng, Xuena Yu, Jinhui Cui, Chong Zhang, Jing Duan, Haobin Zhong, Rujin Huang, Xuguang Chi, Wei Nie, and Aijun Ding
EGUsphere, https://doi.org/10.5194/egusphere-2024-262, https://doi.org/10.5194/egusphere-2024-262, 2024
Preprint archived
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@Tibet field campaigns 2021 discovered surprisingly high levels and activity contributions of oxygenated volatile organic compounds on the southeast of the Tibetan Plateau, which suggests that OVOCs may play a larger role in the chemical reactions that occur in high-altitude regions than previously thought.
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
Atmos. Chem. Phys., 23, 10383–10397, https://doi.org/10.5194/acp-23-10383-2023, https://doi.org/10.5194/acp-23-10383-2023, 2023
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Online volatile organic compound (VOC) measurements by gas chromatography–mass spectrometry, with other O3 precursors, were used to identify key VOC and other key sources in Lhasa. Total VOCs (TVOCs), alkanes, and aromatics are half as abundant as in Beijing. Oxygenated VOCs (OVOCs) consist of 52 % of the TVOCs. Alkenes and OVOCs account for 80 % of the ozone formation potential. Aromatics dominate secondary organic aerosol potential. Positive matrix factorization decomposed residential sources.
Yaru Wang, Yi Chen, Suzhen Chi, Jianshu Wang, Chong Zhang, Weixiong Zhao, Weili Lin, and Chunxiang Ye
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2023-192, https://doi.org/10.5194/amt-2023-192, 2023
Revised manuscript not accepted
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We reported an optimized system (Mea-OPR) for direct measurement of ozone production rate, which showed a precise, sensitive and reliable measurement of OPR for at least urban and suburban atmosphere, and active O3 photochemical production in winter Beijing. Herein, the Mea-OPR system also shows its potential in exploring the fundamental O3 photochemistry, i.e., surprisingly high ozone production even under high-NOx conditions.
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.
Joanna E. Dyson, Lisa K. Whalley, Eloise J. Slater, Robert Woodward-Massey, Chunxiang Ye, James D. Lee, Freya Squires, James R. Hopkins, Rachel E. Dunmore, Marvin Shaw, Jacqueline F. Hamilton, Alastair C. Lewis, Stephen D. Worrall, Asan Bacak, Archit Mehra, Thomas J. Bannan, Hugh Coe, Carl J. Percival, Bin Ouyang, C. Nicholas Hewitt, Roderic L. Jones, Leigh R. Crilley, Louisa J. Kramer, W. Joe F. Acton, William J. Bloss, Supattarachai Saksakulkrai, Jingsha Xu, Zongbo Shi, Roy M. Harrison, Simone Kotthaus, Sue Grimmond, Yele Sun, Weiqi Xu, Siyao Yue, Lianfang Wei, Pingqing Fu, Xinming Wang, Stephen R. Arnold, and Dwayne E. Heard
Atmos. Chem. Phys., 23, 5679–5697, https://doi.org/10.5194/acp-23-5679-2023, https://doi.org/10.5194/acp-23-5679-2023, 2023
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The hydroxyl (OH) and closely coupled hydroperoxyl (HO2) radicals are vital for their role in the removal of atmospheric pollutants. In less polluted regions, atmospheric models over-predict HO2 concentrations. In this modelling study, the impact of heterogeneous uptake of HO2 onto aerosol surfaces on radical concentrations and the ozone production regime in Beijing in the summertime is investigated, and the implications for emissions policies across China are considered.
Lizi Tang, Min Hu, Dongjie Shang, Xin Fang, Jianjiong Mao, Wanyun Xu, Jiacheng Zhou, Weixiong Zhao, Yaru Wang, Chong Zhang, Yingjie Zhang, Jianlin Hu, Limin Zeng, Chunxiang Ye, Song Guo, and Zhijun Wu
Atmos. Chem. Phys., 23, 4343–4359, https://doi.org/10.5194/acp-23-4343-2023, https://doi.org/10.5194/acp-23-4343-2023, 2023
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There was an evident distinction in the frequency of new particle formation (NPF) events at Nam Co station on the Tibetan Plateau: 15 % in pre-monsoon season and 80 % in monsoon season. The frequent NPF events in monsoon season resulted from the higher frequency of southerly air masses, which brought the organic precursors to participate in the NPF process. It increased the amount of aerosol and CCN compared with those in pre-monsoon season, which may markedly affect earth's radiation balance.
Hao Yin, Youwen Sun, Justus Notholt, Mathias Palm, Chunxiang Ye, and Cheng Liu
Atmos. Chem. Phys., 22, 14401–14419, https://doi.org/10.5194/acp-22-14401-2022, https://doi.org/10.5194/acp-22-14401-2022, 2022
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Improved knowledge of the chemistry and drivers of surface ozone over the Qinghai-Tibet Plateau (QTP) is significant for regulatory and control purposes in this high-altitude region in the Himalayas. Our study investigates the processes and drivers of surface ozone anomalies by using machine-learning model-based meteorological normalization methods between 2015 and 2020 in urban areas over the QTP. This study can provide valuable implication for ozone mitigation over the QTP.
Yuhan Liu, Xuejiao Wang, Jing Shang, Weiwei Xu, Mengshuang Sheng, and Chunxiang Ye
Atmos. Chem. Phys., 22, 11347–11358, https://doi.org/10.5194/acp-22-11347-2022, https://doi.org/10.5194/acp-22-11347-2022, 2022
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In this study, the influence of HCHO on renoxification on nitrate-doped TiO2 particles is investigated by using an experimental chamber. Mass NOx release is suggested to follow the NO−3-NO3·-HNO3-NOx pathway, with HCHO involved in the transformation of NO3· to HNO3 through hydrogen abstraction. Our proposed reaction mechanism by which HCHO promotes photocatalytic renoxification is helpful for deeply understanding the atmospheric photochemical processes and nitrogen cycling.
Marios Panagi, Roberto Sommariva, Zoë L. Fleming, Paul S. Monks, Gongda Lu, Eloise A. Marais, James R. Hopkins, Alastair C. Lewis, Qiang Zhang, James D. Lee, Freya A. Squires, Lisa K. Whalley, Eloise J. Slater, Dwayne E. Heard, Robert Woodward-Massey, Chunxiang Ye, and Joshua D. Vande Hey
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2022-379, https://doi.org/10.5194/acp-2022-379, 2022
Revised manuscript not accepted
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A dispersion model and a box model were combined to investigate the evolution of VOCs in Beijing once they are emitted from anthropogenic sources. It was determined that during the winter time the VOC concentrations in Beijing are driven predominantly by sources within Beijing and by a combination of transport and chemistry during the summer. Furthermore, the results in the paper highlight the need for a season specific policy.
Hossein Dadashazar, Majid Alipanah, Miguel Ricardo A. Hilario, Ewan Crosbie, Simon Kirschler, Hongyu Liu, Richard H. Moore, Andrew J. Peters, Amy Jo Scarino, Michael Shook, K. Lee Thornhill, Christiane Voigt, Hailong Wang, Edward Winstead, Bo Zhang, Luke Ziemba, and Armin Sorooshian
Atmos. Chem. Phys., 21, 16121–16141, https://doi.org/10.5194/acp-21-16121-2021, https://doi.org/10.5194/acp-21-16121-2021, 2021
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This study investigates precipitation impacts on long-range transport of North American outflow over the western North Atlantic Ocean (WNAO). Results demonstrate that precipitation scavenging plays a significant role in modifying surface aerosol concentrations over the WNAO, especially in winter and spring due to large-scale scavenging processes. This study highlights how precipitation impacts surface aerosol properties with relevance for other marine regions vulnerable to continental outflow.
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Short summary
The daytime chemistry of nitrous acid (HONO), which plays an important role in the oxidation capacity of the troposphere, is not well understood. In this work, we report new field measurement results of HONO and the relevant parameters in the marine boundary layer at Tudor Hill Marine Atmospheric Observatory in Bermuda. We evaluate the daytime HONO budgets in air masses under different types of interaction with the island and examine the strengths of different HONO formation and loss mechanisms.
The daytime chemistry of nitrous acid (HONO), which plays an important role in the oxidation...
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