Articles | Volume 19, issue 7
https://doi.org/10.5194/acp-19-4153-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-19-4153-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Apr 2019
Research article |
| 03 Apr 2019
| 03 Apr 2019
Characteristics of ozone and particles in the near-surface atmosphere in the urban area of the Yangtze River Delta, China
Huimin Chen
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Jane Liu
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Department of Geography and Planning, University of Toronto, Toronto,
M5S 3G3, Canada
Tijian Wang
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Shu Li
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Mengmeng Li
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Pulong Chen
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Ming Zhao
School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate
Prediction Studies, Jiangsu Collaborative Innovation Center for Climate
Change, Nanjing University, Nanjing 210023, China
Related authors
Han Han, Yue Wu, Jane Liu, Tianliang Zhao, Bingliang Zhuang, Honglei Wang, Yichen Li, Huimin Chen, Ye Zhu, Hongnian Liu, Qin'geng Wang, Shu Li, Tijian Wang, Min Xie, and Mengmeng Li
Atmos. Chem. Phys., 20, 13591–13610, https://doi.org/10.5194/acp-20-13591-2020, https://doi.org/10.5194/acp-20-13591-2020, 2020
Short summary
Short summary
Combining simulations from a global chemical transport model and a trajectory model, we find that black carbon aerosols from South Asia and East Asia contribute 77 % of the surface black carbon in the Tibetan Plateau. The Asian monsoon largely modulates inter-annual transport of black carbon from non-local regions to the Tibetan Plateau surface in most seasons, while inter-annual fire activities in South Asia influence black carbon concentration over the Tibetan Plateau surface mainly in spring.
Bingliang Zhuang, Tijian Wang, Jane Liu, Huizheng Che, Yong Han, Yu Fu, Shu Li, Min Xie, Mengmeng Li, Pulong Chen, Huimin Chen, Xiu-qun Yang, and Jianning Sun
Atmos. Chem. Phys., 18, 1419–1436, https://doi.org/10.5194/acp-18-1419-2018, https://doi.org/10.5194/acp-18-1419-2018, 2018
Short summary
Short summary
Aerosols have a significant influence on climate changes. Their uncertainties could be substantially reduced if observation data were used. The properties and the DRF of fractionated aerosols in the western Yangtze River Delta are investigated based on measurements. Results reveal the characteristics of the optical properties and DRFs of different types of fractionated aerosols, which can be further used to improve aerosol modelling performance in the eastern regions of China.
Haoran Zhang, Chengchun Shi, Chuanyou Ying, Shengheng Weng, Erling Ni, Lanbu Zhao, Peiheng Yang, Keqin Tang, Xueyu Zhou, Chuanhua Ren, Tengyu Liu, Mengmeng Li, Nan Li, and Xin Huang
EGUsphere, https://doi.org/10.5194/egusphere-2025-2630, https://doi.org/10.5194/egusphere-2025-2630, 2025
This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
Short summary
Short summary
This study reports a unique diurnal pattern of nitrous acid (HONO), featuring higher concentrations around noon, based on one-month measurements in coastal Fujian, southeast China. Using an improved chemical transport model, we successfully reproduced the observed HONO levels and temporal variations. Further process analyses and sensitivity experiments quantified the formation mechanisms of HONO in coastal areas and shed light on its impact on the formation of OH radicals and ozone.
Mengzhu Xi, Min Xie, Yi Luo, Danyang Ma, Lingyun Feng, Shitong Chen, and Shuxian Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2025-2466, https://doi.org/10.5194/egusphere-2025-2466, 2025
Short summary
Short summary
Tropical cyclones have a significant impact on ozone in coastal areas by affecting atmospheric circulation and meteorological conditions. We have studied the impact and future trends of climate change in the Yangtze River Delta region and found that the intensification of climate change will exacerbate the impact of TC on O3 in the Yangtze River Delta, requiring strengthened monitoring and early warning.
Danyang Ma, Min Xie, Huan He, Tijian Wang, Mengzhu Xi, Lingyun Feng, Shuxian Zhang, and Shitong Chen
EGUsphere, https://doi.org/10.5194/egusphere-2025-10, https://doi.org/10.5194/egusphere-2025-10, 2025
Short summary
Short summary
The PM2.5 concentration in China underwent significant changes in 2013. We examined the underlying causes from three perspectives: anthropogenic pollutant emissions, meteorological conditions, and CO2 concentration variations. Our study highlighted the importance of considering the role of CO2 on vegetation when predicting PM2.5 concentrations and developing corresponding control strategies.
Hua Lu, Min Xie, Nan Wang, Bojun Liu, Jinyue Jiang, Bingliang Zhuang, Jianfeng Yang, Kunqin Lv, and Danyang Ma
EGUsphere, https://doi.org/10.5194/egusphere-2025-598, https://doi.org/10.5194/egusphere-2025-598, 2025
Short summary
Short summary
Fires are important sources of air pollution in many regions. This study isolates fire-specific PM2.5 from observations, showing its increasing proportion in recent years. Our findings indicate that fire-specific PM2.5 disproportionately affects impoverished populations in Asia Pacific. Furthermore, we suggest that, under future climate change, fire-specific PM2.5 will likely continue rising. This highlights the need for interventions to reduce fire-related air pollution and its health impacts.
Xin Zeng, Tijian Wang, Congwu Huang, Bingliang Zhuang, Shu Li, Mengmeng Li, Min Xie, Qian Zhang, and Nanhong Xie
EGUsphere, https://doi.org/10.5194/egusphere-2025-608, https://doi.org/10.5194/egusphere-2025-608, 2025
Short summary
Short summary
In this study, we enhanced the regional climate-chemistry-ecology model to reveal the seasonal and spatial variations of N2O levels. The lowest concentration was recorded in June (334.01 ppb), while the highest occurred in December (335.42 ppb). Certain regions, such as the North China Plain and the Ganges Basin, exhibited higher nitrous oxide levels. We also gained deeper insights into the complex interactions between N2O emissions and atmospheric processes.
Beiyao Xu, Steven Dobbie, Huiyi Yang, Lianxin Yang, Yu Jiang, Andrew Challinor, Karina Williams, Yunxia Wang, and Tijian Wang
EGUsphere, https://doi.org/10.5194/egusphere-2024-4077, https://doi.org/10.5194/egusphere-2024-4077, 2025
Short summary
Short summary
Ozone (O3) pollution harms rice production and threatens food security. To understand these impacts, we calibrated a crop model using unique data from experiments where rice was grown in open fields under controlled O3 exposure (free air). This is the first time such data has been used to improve a model’s ability to predict how rice responds to O3 pollution. Our work provides a more accurate tool to study O3’s effects and guide strategies to protect agriculture.
Hua Lu, Min Xie, Bingliang Zhuang, Danyang Ma, Bojun Liu, Yangzhihao Zhan, Tijian Wang, Shu Li, Mengmeng Li, and Kuanguang Zhu
Atmos. Chem. Phys., 24, 8963–8982, https://doi.org/10.5194/acp-24-8963-2024, https://doi.org/10.5194/acp-24-8963-2024, 2024
Short summary
Short summary
To identify cloud, aerosol, and planetary boundary layer (PBL) interactions from an air quality perspective, we summarized two pollution patterns characterized by denser liquid cloud and by obvious cloud radiation interaction (CRI). Numerical simulation experiments showed CRI could cause a 50 % reduction in aerosol radiation interaction (ARI) under a low-trough system. The results emphasized the nonnegligible role of CRI and its inhibition of ARI under wet and cloudy pollution synoptic patterns.
Nanhong Xie, Tijian Wang, Xiaodong Xie, Xu Yue, Filippo Giorgi, Qian Zhang, Danyang Ma, Rong Song, Beiyao Xu, Shu Li, Bingliang Zhuang, Mengmeng Li, Min Xie, Natalya Andreeva Kilifarska, Georgi Gadzhev, and Reneta Dimitrova
Geosci. Model Dev., 17, 3259–3277, https://doi.org/10.5194/gmd-17-3259-2024, https://doi.org/10.5194/gmd-17-3259-2024, 2024
Short summary
Short summary
For the first time, we coupled a regional climate chemistry model, RegCM-Chem, with a dynamic vegetation model, YIBs, to create a regional climate–chemistry–ecology model, RegCM-Chem–YIBs. We applied it to simulate climatic, chemical, and ecological parameters in East Asia and fully validated it on a variety of observational data. Results show that RegCM-Chem–YIBs model is a valuable tool for studying the terrestrial carbon cycle, atmospheric chemistry, and climate change on a regional scale.
Shiyi Lai, Ximeng Qi, Xin Huang, Sijia Lou, Xuguang Chi, Liangduo Chen, Chong Liu, Yuliang Liu, Chao Yan, Mengmeng Li, Tengyu Liu, Wei Nie, Veli-Matti Kerminen, Tuukka Petäjä, Markku Kulmala, and Aijun Ding
Atmos. Chem. Phys., 24, 2535–2553, https://doi.org/10.5194/acp-24-2535-2024, https://doi.org/10.5194/acp-24-2535-2024, 2024
Short summary
Short summary
By combining in situ measurements and chemical transport modeling, this study investigates new particle formation (NPF) on the southeastern Tibetan Plateau. We found that the NPF was driven by the presence of biogenic gases and the transport of anthropogenic precursors. The NPF was vertically heterogeneous and shaped by the vertical mixing. This study highlights the importance of anthropogenic–biogenic interactions and meteorological dynamics in NPF in this climate-sensitive region.
Hua Lu, Min Xie, Wei Zhao, Bojun Liu, Tijian Wang, and Bingliang Zhuang
Atmos. Meas. Tech., 17, 167–179, https://doi.org/10.5194/amt-17-167-2024, https://doi.org/10.5194/amt-17-167-2024, 2024
Short summary
Short summary
Observations of vertical wind in regions with complex terrain are essential, but they are always sparse and have poor representation. Data verification and quality control are conducted on the wind profile radar and Aeolus wind products in this study, trying to compensate for the limitations of wind field observations. The results shed light on the comprehensive applications of multi-source wind profile data in complicated terrain regions with sparse ground-based wind observations.
Siyu Zhu, Peipei Wu, Siyi Zhang, Oliver Jahn, Shu Li, and Yanxu Zhang
Geosci. Model Dev., 16, 5915–5929, https://doi.org/10.5194/gmd-16-5915-2023, https://doi.org/10.5194/gmd-16-5915-2023, 2023
Short summary
Short summary
In this study, we estimate the global biogeochemical cycling of Hg in a state-of-the-art physical-ecosystem ocean model (high-resolution-MITgcm/Hg), providing a more accurate portrayal of surface Hg concentrations in estuarine and coastal areas, strong western boundary flow and upwelling areas, and concentration diffusion as vortex shapes. The high-resolution model can help us better predict the transport and fate of Hg in the ocean and its impact on the global Hg cycle.
Yangzhihao Zhan, Min Xie, Wei Zhao, Tijian Wang, Da Gao, Pulong Chen, Jun Tian, Kuanguang Zhu, Shu Li, Bingliang Zhuang, Mengmeng Li, Yi Luo, and Runqi Zhao
Atmos. Chem. Phys., 23, 9837–9852, https://doi.org/10.5194/acp-23-9837-2023, https://doi.org/10.5194/acp-23-9837-2023, 2023
Short summary
Short summary
Although the main source contribution of pollution is secondary inorganic aerosols in Nanjing, health risks mainly come from industry sources and vehicle emissions. Therefore, the development of megacities should pay more attention to the health burden of vehicle emissions, coal combustion, and industrial processes. This study provides new insight into assessing the relationship between source apportionment and health risks and can provide valuable insight into air pollution strategies.
Danyang Ma, Tijian Wang, Hao Wu, Yawei Qu, Jian Liu, Jane Liu, Shu Li, Bingliang Zhuang, Mengmeng Li, and Min Xie
Atmos. Chem. Phys., 23, 6525–6544, https://doi.org/10.5194/acp-23-6525-2023, https://doi.org/10.5194/acp-23-6525-2023, 2023
Short summary
Short summary
Increasing surface ozone (O3) concentrations have long been a significant environmental issue in China, despite the Clean Air Action Plan launched in 2013. Most previous research ignores the contributions of CO2 variations. Our study comprehensively analyzed O3 variation across China from various perspectives and highlighted the importance of considering CO2 variations when designing long-term O3 control policies, especially in high-vegetation-coverage areas.
Chenchao Zhan, Min Xie, Hua Lu, Bojun Liu, Zheng Wu, Tijian Wang, Bingliang Zhuang, Mengmeng Li, and Shu Li
Atmos. Chem. Phys., 23, 771–788, https://doi.org/10.5194/acp-23-771-2023, https://doi.org/10.5194/acp-23-771-2023, 2023
Short summary
Short summary
With the development of urbanization, urban land use and anthropogenic
emissions increase, affecting urban air quality and, in turn, the health risks associated with air pollutants. In this study, we systematically evaluate the impacts of urbanization on air quality and the corresponding health risks in a highly urbanized city with severe air pollution and complex terrain. This work focuses on the health risks caused by urbanization and can provide valuable insight for air pollution strategies.
Shiyue Zhang, Gang Zeng, Tijian Wang, Xiaoye Yang, and Vedaste Iyakaremye
Atmos. Chem. Phys., 22, 16017–16030, https://doi.org/10.5194/acp-22-16017-2022, https://doi.org/10.5194/acp-22-16017-2022, 2022
Short summary
Short summary
Severe haze days in eastern China (HDEC) are affected by the atmospheric circulation variations on a synoptic scale, while the dominant atmospheric circulation patterns influencing HDEC and the differences between them are still unclear. This study obtains three dominant circulation types that could lead to severe HDEC and investigates the differences between them. The results provide a basis for establishing applicable haze prediction and management policies.
Chenchao Zhan and Min Xie
Atmos. Chem. Phys., 22, 1351–1371, https://doi.org/10.5194/acp-22-1351-2022, https://doi.org/10.5194/acp-22-1351-2022, 2022
Short summary
Short summary
The changes of land use and anthropogenic heat (AH) derived from urbanization can affect meteorology and in turn O3 evolution. In this study, we briefly describe the general features of O3 pollution in the Yangtze River Delta (YRD) based on in situ observational data. Then, the impacts of land use and anthropogenic heat on O3 via changing the meteorological factors and local circulations are investigated in this region using the WRF-Chem model.
Mengmeng Li, Zihan Zhang, Quan Yao, Tijian Wang, Min Xie, Shu Li, Bingliang Zhuang, and Yong Han
Atmos. Chem. Phys., 21, 15135–15152, https://doi.org/10.5194/acp-21-15135-2021, https://doi.org/10.5194/acp-21-15135-2021, 2021
Short summary
Short summary
We establish the nonlinear responses between nitrate and NOx in China. Reduction of NOx results in linearly lower nitrate in summer–autumn whereas an increase of winter nitrate until an inflexion point at 40–50 % reduction due to the excess oxidants. NH3 and VOCs are effective in controlling nitrate pollution, whereas decreasing the SO2 and NOx emissions may have counterintuitive effects on nitrate aerosols. This paper helps understand the nonlinear aerosol and photochemistry feedback.
Da Gao, Min Xie, Jane Liu, Tijian Wang, Chaoqun Ma, Haokun Bai, Xing Chen, Mengmeng Li, Bingliang Zhuang, and Shu Li
Atmos. Chem. Phys., 21, 5847–5864, https://doi.org/10.5194/acp-21-5847-2021, https://doi.org/10.5194/acp-21-5847-2021, 2021
Short summary
Short summary
O3 has been increasing in recent years over the Yangtze River Delta region of China and is closely associated with dominant weather systems. Still, the study on the impact of changes in synoptic weather patterns (SWPs) on O3 variation is quite limited. This work aims to reveal the unique features of changes in each SWP under O3 variation and quantifies the effects of meteorological conditions on O3 variation. Our findings could be helpful in strategy planning for O3 pollution control.
Yawei Qu, Apostolos Voulgarakis, Tijian Wang, Matthew Kasoar, Chris Wells, Cheng Yuan, Sunil Varma, and Laura Mansfield
Atmos. Chem. Phys., 21, 5705–5718, https://doi.org/10.5194/acp-21-5705-2021, https://doi.org/10.5194/acp-21-5705-2021, 2021
Short summary
Short summary
The meteorological effect of aerosols on tropospheric ozone is investigated using global atmospheric modelling. We found that aerosol-induced meteorological effects act to reduce modelled ozone concentrations over China, which brings the simulation closer to observed levels. Our work sheds light on understudied processes affecting the levels of tropospheric gaseous pollutants and provides a basis for evaluating such processes using a combination of observations and model sensitivity experiments.
Fei Jiang, Hengmao Wang, Jing M. Chen, Weimin Ju, Xiangjun Tian, Shuzhuang Feng, Guicai Li, Zhuoqi Chen, Shupeng Zhang, Xuehe Lu, Jane Liu, Haikun Wang, Jun Wang, Wei He, and Mousong Wu
Atmos. Chem. Phys., 21, 1963–1985, https://doi.org/10.5194/acp-21-1963-2021, https://doi.org/10.5194/acp-21-1963-2021, 2021
Short summary
Short summary
We present a 6-year inversion from 2010 to 2015 for the global and regional carbon fluxes using only the GOSAT XCO2 retrievals. We find that the XCO2 retrievals could significantly improve the modeling of atmospheric CO2 concentrations and that the inferred interannual variations in the terrestrial carbon fluxes in most land regions have a better relationship with the changes in severe drought area or leaf area index, or are more consistent with the previous estimates about drought impact.
Chenchao Zhan, Min Xie, Chongwu Huang, Jane Liu, Tijian Wang, Meng Xu, Chaoqun Ma, Jianwei Yu, Yumeng Jiao, Mengmeng Li, Shu Li, Bingliang Zhuang, Ming Zhao, and Dongyang Nie
Atmos. Chem. Phys., 20, 13781–13799, https://doi.org/10.5194/acp-20-13781-2020, https://doi.org/10.5194/acp-20-13781-2020, 2020
Short summary
Short summary
The Yangtze River Delta (YRD) region has been suffering from severe ozone (O3) pollution in recent years. Synoptic systems, like typhoons, can have a significant effect on O3 episodes. However, research on landfall typhoons affecting O3 in the YRD is limited. This work aims to reveal the main processes of landfall typhoons affecting surface O3 and estimate health impacts of O3 during the study period in the YRD, which can be useful for taking reasonable pollution control measures in this area.
Han Han, Yue Wu, Jane Liu, Tianliang Zhao, Bingliang Zhuang, Honglei Wang, Yichen Li, Huimin Chen, Ye Zhu, Hongnian Liu, Qin'geng Wang, Shu Li, Tijian Wang, Min Xie, and Mengmeng Li
Atmos. Chem. Phys., 20, 13591–13610, https://doi.org/10.5194/acp-20-13591-2020, https://doi.org/10.5194/acp-20-13591-2020, 2020
Short summary
Short summary
Combining simulations from a global chemical transport model and a trajectory model, we find that black carbon aerosols from South Asia and East Asia contribute 77 % of the surface black carbon in the Tibetan Plateau. The Asian monsoon largely modulates inter-annual transport of black carbon from non-local regions to the Tibetan Plateau surface in most seasons, while inter-annual fire activities in South Asia influence black carbon concentration over the Tibetan Plateau surface mainly in spring.
Meng Gao, Zhiwei Han, Zhining Tao, Jiawei Li, Jeong-Eon Kang, Kan Huang, Xinyi Dong, Bingliang Zhuang, Shu Li, Baozhu Ge, Qizhong Wu, Hyo-Jung Lee, Cheol-Hee Kim, Joshua S. Fu, Tijian Wang, Mian Chin, Meng Li, Jung-Hun Woo, Qiang Zhang, Yafang Cheng, Zifa Wang, and Gregory R. Carmichael
Atmos. Chem. Phys., 20, 1147–1161, https://doi.org/10.5194/acp-20-1147-2020, https://doi.org/10.5194/acp-20-1147-2020, 2020
Short summary
Short summary
Topic 3 of the Model Inter-Comparison Study for Asia (MICS-Asia) Phase III examines how online coupled air quality models perform in simulating high aerosol pollution in the North China Plain region during wintertime haze events and evaluates the importance of aerosol radiative feedbacks. This paper discusses the estimates of aerosol radiative forcing, aerosol feedbacks, and possible causes for the differences among the models.
Han Han, Jane Liu, Lei Shu, Tijian Wang, and Huiling Yuan
Atmos. Chem. Phys., 20, 203–222, https://doi.org/10.5194/acp-20-203-2020, https://doi.org/10.5194/acp-20-203-2020, 2020
Short summary
Short summary
We statistically assessed the impacts of local and synoptic meteorology on daily surface ozone in eastern China in summer during 2013–2018. The results show that the meteorology described by a multiple linear regression model explains 43 % of variations in surface ozone. The most important local meteorological factors vary with location in eastern China. The maximum impact of the predominant synoptic pattern on surface ozone can reach ± 8 µg m-3 or ± 16 % of the daily mean over some regions.
Lifei Yin, Zhenying Xu, Mingxu Liu, Tingting Xu, Tiantian Wang, Wenling Liao, Mengmeng Li, Xuhui Cai, Ling Kang, Hongsheng Zhang, and Yu Song
Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-458, https://doi.org/10.5194/bg-2019-458, 2020
Manuscript not accepted for further review
Short summary
Short summary
Biogenic Volatile Organic Compounds (BVOCs) emission of terrestrial vegetation is an important part of biogeochemical cycle. Compared with previous studies which calculate regional BVOC emissions independently, the coupled model WRF-CLM-MEGAN achieves an integrated parameterization of BVOC emissions and other land surface processes, and therefore provides a more reasonable estimate. The model could be further coupled with chemistry module to fully investigate the land-atmosphere interactions.
Han Han, Jane Liu, Huiling Yuan, Tijian Wang, Bingliang Zhuang, and Xun Zhang
Atmos. Chem. Phys., 19, 12495–12514, https://doi.org/10.5194/acp-19-12495-2019, https://doi.org/10.5194/acp-19-12495-2019, 2019
Short summary
Short summary
In the East Asian middle and upper troposphere, foreign ozone is 0.8–4.8 times more than its native counterpart in all the seasons. At the East Asian surface, the annual mean concentrations of foreign ozone and native ozone are comparable, being approximately 20 ppbv. The seasonal and interannual variations in foreign ozone over East Asia are closely related to the East Asian monsoon.
Junting Zhong, Xiaoye Zhang, Yaqiang Wang, Jizhi Wang, Xiaojing Shen, Hongsheng Zhang, Tijian Wang, Zhouqing Xie, Cheng Liu, Hengde Zhang, Tianliang Zhao, Junying Sun, Shaojia Fan, Zhiqiu Gao, Yubin Li, and Linlin Wang
Atmos. Chem. Phys., 19, 3287–3306, https://doi.org/10.5194/acp-19-3287-2019, https://doi.org/10.5194/acp-19-3287-2019, 2019
Short summary
Short summary
In various haze regions in China, including the Guanzhong Plain, the middle and lower reaches of the Yangtze River, the Pearl River Delta, the Sichuan Basin, and the Northeast China Plain, heavy aerosol pollution episodes include inter-/trans-regional transport stages and cumulative stages (CSs). During CSs a two-way feedback mechanism exists between unfavorable meteorological conditions and cumulative aerosol pollution. This two-way feedback is further quantified and its magnitude is compared.
Cheng Yuan, William K. M. Lau, Zhanqing Li, and Maureen Cribb
Atmos. Chem. Phys., 19, 1901–1913, https://doi.org/10.5194/acp-19-1901-2019, https://doi.org/10.5194/acp-19-1901-2019, 2019
Short summary
Short summary
Using MERRA-2 reanalysis daily data from 2001 to 2015, we found that during strong South Asian summer monsoon years, the Asian monsoon anticyclone is more expansive and shifted northward. All the CO, carbonaceous aerosols and dust are found to be more abundant in the Asian Tropopause Aerosol Layer (ATAL). ATAL trends are associated with increasing strength of the AMA, with earlier and enhanced vertical transport of ATAL constituents by enhanced overshooting convection over the transport regions.
Meng Gao, Zhiwei Han, Zirui Liu, Meng Li, Jinyuan Xin, Zhining Tao, Jiawei Li, Jeong-Eon Kang, Kan Huang, Xinyi Dong, Bingliang Zhuang, Shu Li, Baozhu Ge, Qizhong Wu, Yafang Cheng, Yuesi Wang, Hyo-Jung Lee, Cheol-Hee Kim, Joshua S. Fu, Tijian Wang, Mian Chin, Jung-Hun Woo, Qiang Zhang, Zifa Wang, and Gregory R. Carmichael
Atmos. Chem. Phys., 18, 4859–4884, https://doi.org/10.5194/acp-18-4859-2018, https://doi.org/10.5194/acp-18-4859-2018, 2018
Short summary
Short summary
Topic 3 of the Model Inter-Comparison Study for Asia (MICS-Asia) Phase III examines how online coupled air quality models perform in simulating high aerosol pollution in the North China Plain region during wintertime haze events and evaluates the importance of aerosol radiative and microphysical feedbacks. A comprehensive overview of the MICS-ASIA III Topic 3 study design is presented.
Han Han, Jane Liu, Huiling Yuan, Bingliang Zhuang, Ye Zhu, Yue Wu, Yuhan Yan, and Aijun Ding
Atmos. Chem. Phys., 18, 4251–4276, https://doi.org/10.5194/acp-18-4251-2018, https://doi.org/10.5194/acp-18-4251-2018, 2018
Short summary
Short summary
Imported African ozone peaks in the Asian middle and upper troposphere in March. The seasonality of African ozone influence on Asia is mainly driven by the seasonal swing of the ITCZ, the Hadley circulation, and the northern subtropical westerlies. The stronger the ITCZ over Africa in a boreal winter is, the more African ozone is transported to Asia that winter. The convective divergence over the ITCZ and the Somali jet are drivers of interhemispheric transport of African ozone.
Bingliang Zhuang, Tijian Wang, Jane Liu, Huizheng Che, Yong Han, Yu Fu, Shu Li, Min Xie, Mengmeng Li, Pulong Chen, Huimin Chen, Xiu-qun Yang, and Jianning Sun
Atmos. Chem. Phys., 18, 1419–1436, https://doi.org/10.5194/acp-18-1419-2018, https://doi.org/10.5194/acp-18-1419-2018, 2018
Short summary
Short summary
Aerosols have a significant influence on climate changes. Their uncertainties could be substantially reduced if observation data were used. The properties and the DRF of fractionated aerosols in the western Yangtze River Delta are investigated based on measurements. Results reveal the characteristics of the optical properties and DRFs of different types of fractionated aerosols, which can be further used to improve aerosol modelling performance in the eastern regions of China.
Qian Huang, Tijian Wang, Pulong Chen, Xiaoxian Huang, Jialei Zhu, and Bingliang Zhuang
Atmos. Chem. Phys., 17, 13457–13471, https://doi.org/10.5194/acp-17-13457-2017, https://doi.org/10.5194/acp-17-13457-2017, 2017
Short summary
Short summary
This paper investigate the important factor contributing to the improvement of air quality of Nanjing, China, during the 2nd Youth Olympic Games, held in August, 2014. The interesting finding is that meteorological factors are not beneficial to air quality during the YOG. However, emission reduction plays a more important role, which suggest that emission reduction is an effective way to cut air pollution levels for social events.
Lei Shu, Min Xie, Da Gao, Tijian Wang, Dexian Fang, Qian Liu, Anning Huang, and Liwen Peng
Atmos. Chem. Phys., 17, 12871–12891, https://doi.org/10.5194/acp-17-12871-2017, https://doi.org/10.5194/acp-17-12871-2017, 2017
Short summary
Short summary
Based on 1-year in situ monitoring data of 16 cities, this paper can enhance the understanding of the pollution characteristics of particles (PM2.5 and PM10) in the Yangtze River Delta region, China. Based on NCEP reanalysis data, the establishment of the potential links between different levels of particle pollution and predominant synoptic patterns can provide an insightful view on formulating pollution control and mitigation strategies.
Min Xie, Lei Shu, Tijian Wang, Da Gao, Shu Li, Bingliang Zhuang, Anning Huang, Dexian Fang, Yong Han, Mengmeng Li, Pulong Chen, Zhijun Liu, Zheng Wu, and Hua Lu
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-500, https://doi.org/10.5194/acp-2017-500, 2017
Preprint withdrawn
Short summary
Short summary
The spatial distribution of aerosol can be affected by monsoon circulation. With the aid of a EAWM index, the stong and the weak EAWM years are identified. The long-term trend of weakening EAWM may potentially increase the aerosol loading in YRD, BTH and SCB but decrease AOD in PRD. By using RegCCMS, we further prove that the intensity of EAWM has great impacts on the spatial distribution of aerosols. The change pattern is mainly decided by the change of aerosols in lower troposphere.
Bingliang Zhuang, Tijian Wang, Jane Liu, Shu Li, Min Xie, Yong Han, Pulong Chen, Qiduo Hu, Xiu-qun Yang, Congbin Fu, and Jialei Zhu
Atmos. Chem. Phys., 17, 1143–1160, https://doi.org/10.5194/acp-17-1143-2017, https://doi.org/10.5194/acp-17-1143-2017, 2017
Short summary
Short summary
The observed near-surface aerosol optical properties in urban Nanjing are analysed from March 2014 to February 2016. Substantial analysis in the key optical properties of the surface aerosol fill the gaps in the study on aerosols in Nanjing, even in the Yangtze River Delta (YRD). Relationships between the aerosol extinction coefficient (single scattering albedo) and atmospheric visibility are also carried out in different seasons to figure out the effect of aerosol on the visibility in Nanjing, YRD.
Lei Shu, Min Xie, Tijian Wang, Da Gao, Pulong Chen, Yong Han, Shu Li, Bingliang Zhuang, and Mengmeng Li
Atmos. Chem. Phys., 16, 15801–15819, https://doi.org/10.5194/acp-16-15801-2016, https://doi.org/10.5194/acp-16-15801-2016, 2016
Short summary
Short summary
Severe high ozone episodes usually have close relations to synoptic systems. A regional continuous ozone pollution episode is detected over the Yangtze River Delta region in August 2013. By means of observational analysis and model simulations, it is found that the western Pacific subtropical high and Typhoon Utor play an important role.
Min Xie, Kuanguang Zhu, Tijian Wang, Wen Feng, Da Gao, Mengmeng Li, Shu Li, Bingliang Zhuang, Yong Han, Pulong Chen, and Jingbiao Liao
Atmos. Chem. Phys., 16, 15011–15031, https://doi.org/10.5194/acp-16-15011-2016, https://doi.org/10.5194/acp-16-15011-2016, 2016
Short summary
Short summary
In this paper, we present our new findings on (1) the spatial and temporal characteristics of AH emissions in South China, (2) how to implement the inhomogeneous AH data into the air quality model WRF/Chem, (3) the impacts of AH fluxes on meteorological fields, and (4) the impacts of meteorology changes on the air quality in different cities in South China. Our results show that the meteorology and air pollution predictions in and around big cities are highly sensitive to AH.
Min Xie, Jingbiao Liao, Tijian Wang, Kuanguang Zhu, Bingliang Zhuang, Yong Han, Mengmeng Li, and Shu Li
Atmos. Chem. Phys., 16, 6071–6089, https://doi.org/10.5194/acp-16-6071-2016, https://doi.org/10.5194/acp-16-6071-2016, 2016
Short summary
Short summary
The spatial and temporal distribution of anthropogenic heat emissions over the YRD region was developed. These gridded AH emissions were incorporated into the modified WRF/Chem model with the seasonal and diurnal variation. The impacts of AH on meteorology and chemical variables were evaluated. The results show that the anthropogenic heat inputs improved the meteorology and air pollution predictions from WRF/Chem in and around large urban areas.
B. L. Zhuang, T. J. Wang, J. Liu, Y. Ma, C. Q. Yin, S. Li, M. Xie, Y. Han, J. L. Zhu, X. Q. Yang, and C. B. Fu
Atmos. Chem. Phys., 15, 13633–13646, https://doi.org/10.5194/acp-15-13633-2015, https://doi.org/10.5194/acp-15-13633-2015, 2015
Short summary
Short summary
The aerosol absorbing coefficient (AAC) assesses the direct radiative forcing of absorbing aerosols. The corrected AAC and absorption Ångström exponent (AAE) in Nanjing, YRD, are characterized using AE-31. Schmid-corrected AAC at 532nm and the AAE at 660/470nm are about 43.23±28.13 Mm-1 and 1.56, both with strong seasonal and diurnal variations. A high AAC is mostly resultant of local and subregional emissions in Nanjing. It peaks at RH values of 40, 65, and 80% at different AAE levels.
J. Zhu, T. Wang, J. Bieser, and V. Matthias
Atmos. Chem. Phys., 15, 8767–8779, https://doi.org/10.5194/acp-15-8767-2015, https://doi.org/10.5194/acp-15-8767-2015, 2015
Short summary
Short summary
This study estimated the contributions to mercury concentration and deposition in easter China from seven categories of emission sources by CMAQ-Hg. Also, this study focuses on diagnostic and process analyses for atmospheric mercury pollution formation and on identification of the dominant atmospheric processes for mercury.
H. Che, X.-Y. Zhang, X. Xia, P. Goloub, B. Holben, H. Zhao, Y. Wang, X.-C. Zhang, H. Wang, L. Blarel, B. Damiri, R. Zhang, X. Deng, Y. Ma, T. Wang, F. Geng, B. Qi, J. Zhu, J. Yu, Q. Chen, and G. Shi
Atmos. Chem. Phys., 15, 7619–7652, https://doi.org/10.5194/acp-15-7619-2015, https://doi.org/10.5194/acp-15-7619-2015, 2015
Short summary
Short summary
This work studied more than 10 years of measurements of aerosol optical depths (AODs) made for 50 sites of CARSNET compiled into a climatology of aerosol optical properties for China. It lets us see a detailed full-scale description of AOD observations over China. The results would benefit us a lot in comprehending the temporal and special distribution aerosol optical property over China. Also the data would be valuable to communities of aerosol satellite retrieval, modelling, etc.
J. Zhu, T. Wang, R. Talbot, H. Mao, X. Yang, C. Fu, J. Sun, B. Zhuang, S. Li, Y. Han, and M. Xie
Atmos. Chem. Phys., 14, 2233–2244, https://doi.org/10.5194/acp-14-2233-2014, https://doi.org/10.5194/acp-14-2233-2014, 2014
L. Xing, T.-M. Fu, J. J. Cao, S. C. Lee, G. H. Wang, K. F. Ho, M.-C. Cheng, C.-F. You, and T. J. Wang
Atmos. Chem. Phys., 13, 4307–4318, https://doi.org/10.5194/acp-13-4307-2013, https://doi.org/10.5194/acp-13-4307-2013, 2013
J. Zhu, T. Wang, R. Talbot, H. Mao, C. B. Hall, X. Yang, C. Fu, B. Zhuang, S. Li, Y. Han, and X. Huang
Atmos. Chem. Phys., 12, 12103–12118, https://doi.org/10.5194/acp-12-12103-2012, https://doi.org/10.5194/acp-12-12103-2012, 2012
Related subject area
Subject: Gases | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
Hemispheric differences in ozone across the stratosphere–troposphere exchange region
Observation and modeling of atmospheric OH and HO2∗ radicals at a subtropical rural site and implications for secondary pollutants
Tracing elevated abundance of CH2Cl2 in the subarctic upper troposphere to the Asian Summer Monsoon
Carbonyl compounds from typical combustion sources: emission characteristics, influencing factors, and their contribution to ozone formation
Formation drivers and photochemical effects of ClNO2 in a coastal city of Southeast China
Significant influence of oxygenated volatile organic compounds on atmospheric chemistry: a case study in a typical industrial city in China
Global ground-based tropospheric ozone measurements: reference data and individual site trends (2000–2022) from the TOAR-II/HEGIFTOM project
Understanding summertime H2O2 chemistry in the North China Plain through observations and modeling studies
Volatile organic compound sources and impacts in an urban Mediterranean area (Marseille, France)
Short-lived organic nitrates in a suburban temperate forest: an indication of efficient assimilation of reactive nitrogen by the biosphere?
Spatiotemporal variations in atmospheric CH4 concentrations and enhancements in northern China based on a comprehensive dataset: ground-based observations, TROPOMI data, inventory data, and inversions
Marine emissions and trade winds control the atmospheric nitrous oxide in the Galapagos Islands
Measurement report: A complex street-level air quality observation campaign in a heavy-traffic area utilizing the multivariate adaptive regression splines method for field calibration of low-cost sensors
The impact of organic nitrates on summer ozone formation in Shanghai, China
Differences in the key volatile organic compound species between their emitted and ambient concentrations in ozone formation
Tracing Ammonia Emission Sources in California's Salton Sea Region: Insights from Airborne Longwave-Infrared Hyperspectral Imaging and Ground Monitoring
Mechanistic insights into chloroacetic acid production from atmospheric multiphase volatile organic compound–chlorine chemistry
Accurate elucidation of oxidation under heavy ozone pollution: a full suite of radical measurements in the chemically complex atmosphere
Isotopic signatures of methane emission from oil and natural gas plants in southwestern China
Emissions of intermediate-volatility and semi-volatile organic compounds (I/SVOCs) from different cumulative-mileage diesel vehicles at various ambient temperatures
Characterization of nitrous acid and its potential effects on secondary pollution in the warm season in Beijing urban areas
Vertical changes in volatile organic compounds (VOCs) and impacts on photochemical ozone formation
Airborne quantification of Angolan offshore oil and gas methane emissions
Diurnal, seasonal, and interannual variations in δ(18O) of atmospheric O2 and its application to evaluate natural and anthropogenic changes in oxygen, carbon, and water cycles
Cloud processing of dimethyl sulfide (DMS) oxidation products limits sulfur dioxide (SO2) and carbonyl sulfide (OCS) production in the eastern North Atlantic marine boundary layer
Atmospheric carbonyl compounds are crucial in regional ozone heavy pollution: insights from the Chengdu Plain Urban Agglomeration, China
Evaluating urban methane emissions and their attributes in a megacity, Osaka, Japan, via mobile and eddy covariance measurements
Tropical Ozone Trends (1998 to 2023): A Synthesis from SHADOZ, IAGOS and OMI/MLS Observations
Ozone (O3) observations in Saxony, Germany for 1997–2020: Trends, modelling and implications for O3 control
Understanding summertime peroxyacetyl nitrate (PAN) formation and its relation to aerosol pollution: insights from high-resolution measurements and modeling
Measurement report: Exploring the variations in ambient BTEX in urban Europe and their environmental health implications
Seasonal air concentration variability, gas–particle partitioning, precipitation scavenging, and air–water equilibrium of organophosphate esters in southern Canada
Measurement report: Surface exchange fluxes of HONO during the growth process of paddy fields in the Huaihe River Basin, China
Molecular and seasonal characteristics of organic vapors in urban Beijing: insights from Vocus-PTR measurements
BVOC and speciated monoterpene concentrations and fluxes at a Scandinavian boreal forest
The variations in volatile organic compounds based on the policy change for Omicron in the traffic hub of Zhengzhou
On the dynamics of ozone depletion events at Villum Research Station in the High Arctic
Measurement report: Long-term measurements of surface ozone and trends in semi-natural sub-Saharan African ecosystems
Characterization of biogenic volatile organic compounds and their oxidation products in a stressed spruce-dominated forest close to a biogas power plant
Reactive chlorine-, sulfur-, and nitrogen-containing volatile organic compounds impact atmospheric chemistry in the megacity of Delhi during both clean and extremely polluted seasons
Analysis of the day-to-day variability of ozone vertical profiles in the lower troposphere during the 2022 Paris ACROSS campaign
Ozone deposition measurements over wheat fields in the North China Plain: variability and related factors of deposition flux and velocity
Consistency evaluation of tropospheric ozone from ozonesonde and IAGOS (In-service Aircraft for a Global Observing System) observations: vertical distribution, ozonesonde types, and station–airport distance
CO2 and CO temporal variability over Mexico City from ground-based total column and surface measurements
Investigating carbonyl compounds above the Amazon rainforest using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) with NO+ chemical ionization
Measurement report: In-flight and ground-based measurements of nitrogen oxide emissions from latest-generation jet engines and 100 % sustainable aviation fuel
Measurement report: Sources, sinks, and lifetime of NOx in a suburban temperate forest at night
Measurement report: Urban ammonia and amines in Houston, Texas
Biomass-burning sources control ambient particulate matter, but traffic and industrial sources control volatile organic compound (VOC) emissions and secondary-pollutant formation during extreme pollution events in Delhi
Multi-year observations of variable incomplete combustion in the New York megacity
Rodrigo J. Seguel, Charlie Opazo, Yann Cohen, Owen R. Cooper, Laura Gallardo, Björn-Martin Sinnhuber, Florian Obersteiner, Andreas Zahn, Peter Hoor, Susanne Rohs, and Andreas Marsing
Atmos. Chem. Phys., 25, 8553–8573, https://doi.org/10.5194/acp-25-8553-2025, https://doi.org/10.5194/acp-25-8553-2025, 2025
Short summary
Short summary
We explored ozone differences between the Northern Hemisphere and Southern Hemispheres in the upper troposphere–lower stratosphere. We found lower ozone (with stratospheric origin) in the Southern Hemisphere, especially during years of severe ozone depletion. Sudden stratospheric warming events increased the ozone in each hemisphere, highlighting the relationship between stratospheric processes and ozone in the upper troposphere, where ozone is an important greenhouse gas.
Zhouxing Zou, Tianshu Chen, Qianjie Chen, Weihang Sun, Shichun Han, Zhuoyue Ren, Xinyi Li, Wei Song, Aoqi Ge, Qi Wang, Xiao Tian, Chenglei Pei, Xinming Wang, Yanli Zhang, and Tao Wang
Atmos. Chem. Phys., 25, 8147–8161, https://doi.org/10.5194/acp-25-8147-2025, https://doi.org/10.5194/acp-25-8147-2025, 2025
Short summary
Short summary
We measured ambient OH and HO2* (HO2 and contribution from RO2, organic peroxyl radicals) concentrations at a subtropical rural site and compared our observations with model results. During warm periods, the model overestimated concentrations of OH and HO2, leading to overestimation of ozone and nitric acid production. Our findings highlight the need to better understand how OH and HO2 are formed and removed, which is important for accurate air quality and climate predictions.
Markus Jesswein, Valentin Lauther, Nicolas Emig, Peter Hoor, Timo Keber, Hans-Christoph Lachnitt, Linda Ort, Tanja Schuck, Johannes Strobel, Ronja Van Luijt, C. Michael Volk, Franziska Weyland, and Andreas Engel
Atmos. Chem. Phys., 25, 8107–8126, https://doi.org/10.5194/acp-25-8107-2025, https://doi.org/10.5194/acp-25-8107-2025, 2025
Short summary
Short summary
The study investigates transport within the Asian Summer Monsoon, focusing on how CH2Cl2 reaches the subarctic tropopause region. Using data from the PHILEAS campaign in 2023, events with increased mixing ratios were detected. Their origin, the transport paths to the tropopause region, and the potential entry into the stratosphere were analyzed. The East Asian Summer Monsoon was identified as the main transport pathway, with only a small contribution to the stratosphere in the following days.
Yanjie Lu, Xinxin Feng, Yanli Feng, Minjun Jiang, Yu Peng, Tian Chen, and Yingjun Chen
Atmos. Chem. Phys., 25, 8043–8059, https://doi.org/10.5194/acp-25-8043-2025, https://doi.org/10.5194/acp-25-8043-2025, 2025
Short summary
Short summary
Through lab tests and field measurements from typical sources, we found that carbonyl compounds from biomass burning are an order of magnitude higher than those from vehicles. The formation of carbonyl compounds in solid and liquid fuel is governed by combustion temperature and emission standards, respectively. Fuel type determines the chemical composition. Biomass burning and farm machinery are key drivers of atmospheric oxidation capacity. This study provides actionable solutions to safeguard public health.
Gaojie Chen, Xiaolong Fan, Haichao Wang, Yee Jun Tham, Ziyi Lin, Xiaoting Ji, Lingling Xu, Baoye Hu, and Jinsheng Chen
Atmos. Chem. Phys., 25, 7815–7828, https://doi.org/10.5194/acp-25-7815-2025, https://doi.org/10.5194/acp-25-7815-2025, 2025
Short summary
Short summary
Our study revealed that the nighttime heterogeneous dinitrogen pentoxide (N2O5) uptake process was the major contributor of nitryl chloride (ClNO2) sources, while nitrate photolysis may promote the elevation of daytime ClNO2 concentrations. The rates of alkane oxidation by chlorine (Cl) radical in the early morning exceeded those by OH radical, significantly promoted the formation of ROx and ozone (O3), and further enhanced the atmospheric oxidation capacity levels.
Jingwen Dai, Kun Zhang, Yanli Feng, Xin Yi, Rui Li, Jin Xue, Qing Li, Lishu Shi, Jiaqiang Liao, Yanan Yi, Fangting Wang, Liumei Yang, Hui Chen, Ling Huang, Jiani Tan, Yangjun Wang, and Li Li
Atmos. Chem. Phys., 25, 7467–7484, https://doi.org/10.5194/acp-25-7467-2025, https://doi.org/10.5194/acp-25-7467-2025, 2025
Short summary
Short summary
Oxygenated volatile organic compounds (OVOCs) are important ozone (O3) precursors. However, most O3 formation analysis based on the box model (OBM) does not include any OVOC constraint. To access the interference of OVOCs with O3 simulation, this study presents results from a field campaign and OBM analysis. Our results indicate that no OVOC constraint in the OBM can lead to overestimation of OVOCs, free radicals, and O3.
Roeland Van Malderen, Anne M. Thompson, Debra E. Kollonige, Ryan M. Stauffer, Herman G. J. Smit, Eliane Maillard Barras, Corinne Vigouroux, Irina Petropavlovskikh, Thierry Leblanc, Valérie Thouret, Pawel Wolff, Peter Effertz, David W. Tarasick, Deniz Poyraz, Gérard Ancellet, Marie-Renée De Backer, Stéphanie Evan, Victoria Flood, Matthias M. Frey, James W. Hannigan, José L. Hernandez, Marco Iarlori, Bryan J. Johnson, Nicholas Jones, Rigel Kivi, Emmanuel Mahieu, Glen McConville, Katrin Müller, Tomoo Nagahama, Justus Notholt, Ankie Piters, Natalia Prats, Richard Querel, Dan Smale, Wolfgang Steinbrecht, Kimberly Strong, and Ralf Sussmann
Atmos. Chem. Phys., 25, 7187–7225, https://doi.org/10.5194/acp-25-7187-2025, https://doi.org/10.5194/acp-25-7187-2025, 2025
Short summary
Short summary
Tropospheric ozone is an important greenhouse gas and is an air pollutant. The time variability of tropospheric ozone is mainly driven by anthropogenic emissions. In this paper, we study the distribution and time variability of ozone from harmonized ground-based observations from five different measurement techniques. Our findings provide clear standard references for atmospheric models and evolving tropospheric ozone satellite data for the 2000–2022 period.
Can Ye, Pengfei Liu, Chaoyang Xue, Chenglong Zhang, Zhuobiao Ma, Chengtang Liu, Junfeng Liu, Keding Lu, Yujing Mu, and Yuanhang Zhang
Atmos. Chem. Phys., 25, 6991–7005, https://doi.org/10.5194/acp-25-6991-2025, https://doi.org/10.5194/acp-25-6991-2025, 2025
Short summary
Short summary
This study investigates H2O2 chemistry in rural North China. The observed H2O2 showed distinct diurnal variations influenced by photochemical reactions. A box model revealed that H2O2 is primarily produced by HO2 recombination and removed mainly via particle uptake. Reductions in NOx, PM2.5, and alkanes raised H2O2 levels, while cutting alkenes, aromatics, CO, and HONO lowered them. A dual strategy focusing on VOC and NOx control is essential to reduce both H2O2 and ozone pollution.
Marvin Dufresne, Thérèse Salameh, Thierry Leonardis, Grégory Gille, Alexandre Armengaud, and Stéphane Sauvage
Atmos. Chem. Phys., 25, 5977–5999, https://doi.org/10.5194/acp-25-5977-2025, https://doi.org/10.5194/acp-25-5977-2025, 2025
Short summary
Short summary
This paper discusses the 18-month-long measurement of non-methane hydrocarbons (NMHCs) in Marseille, where there was no measurement since early 2000, despite the impact of NMHCs on air quality and climate. Traffic-related sources are the largest contributor to NMHC concentrations in Marseille, and shipping strongly contributes to the formation of aerosols. Finally, the Covid-19 lockdown had an impact on NMHC concentrations, reaching a 50 % decrease for traffic-related sources.
Simone T. Andersen, Rolf Sander, Patrick Dewald, Laura Wüst, Tobias Seubert, Gunther N. T. E. Türk, Jan Schuladen, Max R. McGillen, Chaoyang Xue, Abdelwahid Mellouki, Alexandre Kukui, Vincent Michoud, Manuela Cirtog, Mathieu Cazaunau, Astrid Bauville, Hichem Bouzidi, Paola Formenti, Cyrielle Denjean, Jean-Claude Etienne, Olivier Garrouste, Christopher Cantrell, Jos Lelieveld, and John N. Crowley
Atmos. Chem. Phys., 25, 5893–5909, https://doi.org/10.5194/acp-25-5893-2025, https://doi.org/10.5194/acp-25-5893-2025, 2025
Short summary
Short summary
Measurements and modelling of reactive nitrogen gases observed in a suburban temperate forest in Rambouillet, France, circa 50 km southwest of Paris in 2022 indicate that the biosphere rapidly scavenges organic nitrates of mixed biogenic and anthropogenic origin, resulting in short lifetimes for, for example, alkyl nitrates and peroxy nitrates.
Pengfei Han, Ning Zeng, Bo Yao, Wen Zhang, Weijun Quan, Pucai Wang, Ting Wang, Minqiang Zhou, Qixiang Cai, Yuzhong Zhang, Ruosi Liang, Wanqi Sun, and Shengxiang Liu
Atmos. Chem. Phys., 25, 4965–4988, https://doi.org/10.5194/acp-25-4965-2025, https://doi.org/10.5194/acp-25-4965-2025, 2025
Short summary
Short summary
Methane (CH4) is a potent greenhouse gas. Northern China contributes a large proportion of CH4 emissions, yet large observation gaps exist. Here we compiled a comprehensive dataset, which is publicly available, that includes ground-based, satellite-based, inventory, and modeling results to show the CH4 concentrations, enhancements, and spatial–temporal variations. The data can benefit the research community and policy-makers for future observations, atmospheric inversions, and policy-making.
Timur Cinay, Dickon Young, Nazaret Narváez Jimenez, Cristina Vintimilla-Palacios, Ariel Pila Alonso, Paul B. Krummel, William Vizuete, and Andrew R. Babbin
Atmos. Chem. Phys., 25, 4703–4718, https://doi.org/10.5194/acp-25-4703-2025, https://doi.org/10.5194/acp-25-4703-2025, 2025
Short summary
Short summary
We present the initial 15 months of nitrous oxide measurements from the Galapagos Emissions Monitoring Station. The observed variability in atmospheric mole fractions during this period can be linked to several factors: seasonal variations in trade wind speed and direction across the eastern Pacific, differences in the transport history of air masses sampled, and spatiotemporal heterogeneity in regional marine nitrous oxide emissions from the coastal upwelling systems of Peru and Chile.
Petra Bauerová, Josef Keder, Adriana Šindelářová, Ondřej Vlček, William Patiño, Pavel Krč, Jan Geletič, Hynek Řezníček, Martin Bureš, Kryštof Eben, Michal Belda, Jelena Radović, Vladimír Fuka, Radek Jareš, Igor Esau, and Jaroslav Resler
Atmos. Chem. Phys., 25, 4477–4504, https://doi.org/10.5194/acp-25-4477-2025, https://doi.org/10.5194/acp-25-4477-2025, 2025
Short summary
Short summary
The study explored urban air quality in Prague using low-cost sensors and highlighted the multivariate adaptive regression splines (MARS) correction method's effectiveness in enhancing accuracy. Results showed traffic's impact on nitrogen dioxide levels and atmospheric dynamics on particulate matter. The research confirmed MARS-corrected sensors as cost-effective for monitoring, despite challenges like sensor ageing and data quality control.
Chunmeng Li, Xiaorui Chen, Haichao Wang, Tianyu Zhai, Xuefei Ma, Xinping Yang, Shiyi Chen, Min Zhou, Shengrong Lou, Xin Li, Limin Zeng, and Keding Lu
Atmos. Chem. Phys., 25, 3905–3918, https://doi.org/10.5194/acp-25-3905-2025, https://doi.org/10.5194/acp-25-3905-2025, 2025
Short summary
Short summary
This study reports an observation of organic nitrate (including total peroxy nitrates and total alkyl nitrates) in Shanghai, China, during the summer of 2021, by homemade thermal dissociation cavity-enhanced absorption spectroscopy (TD-CEAS; Atmos. Meas. Tech., 14, 4033–4051, 2021). The distribution of organic nitrates and their effects on local ozone production are analyzed based on field observations in conjunction with model simulations.
Xudong Zheng and Shaodong Xie
Atmos. Chem. Phys., 25, 3807–3820, https://doi.org/10.5194/acp-25-3807-2025, https://doi.org/10.5194/acp-25-3807-2025, 2025
Short summary
Short summary
To reduce uncertainties in identifying the key volatile organic compounds (VOCs) in ozone (O3) formation from ambient concentrations, this study comprehensively calculates the emitted VOC concentrations during both nighttime and daytime using the nitrate radical, O3, and hydroxyl radical reaction rates and ambient VOC concentrations. Based on the emitted concentrations, isoprene is one of the top three species contributing to O3 formation, which may be overlooked in observed concentrations.
Sina Hasheminassab, David M. Tratt, Olga V. Kalashnikova, Clement S. Chang, Morad Alvarez, Kerry N. Buckland, Michael J. Garay, Francesca M. Hopkins, Eric R. Keim, Le Kuai, Yaning Miao, Payam Pakbin, William C. Porter, and Mohammad H. Sowlat
EGUsphere, https://doi.org/10.5194/egusphere-2025-1378, https://doi.org/10.5194/egusphere-2025-1378, 2025
Short summary
Short summary
Ammonia (NH3) is a key air pollutant linked to fine particle pollution, yet its sources remain poorly understood. Using airborne infrared imaging and ground sensors, we mapped NH3 emissions in California’s Salton Sea region with unprecedented detail. We found high emissions from farms, geothermal plants, and waste sites, including sources missing from inventories. These findings highlight the need for better NH3 monitoring to improve air quality models and guide pollution reduction strategies.
Mingxue Li, Men Xia, Chunshui Lin, Yifan Jiang, Weihang Sun, Yurun Wang, Yingnan Zhang, Maoxia He, and Tao Wang
Atmos. Chem. Phys., 25, 3753–3764, https://doi.org/10.5194/acp-25-3753-2025, https://doi.org/10.5194/acp-25-3753-2025, 2025
Short summary
Short summary
Our field campaigns observed a strong diel pattern of chloroacetic acid as well as a strong correlation between its level and that of reactive chlorine species at a coastal site. Using quantum chemical calculations and box model simulation with an updated Master Chemical Mechanism, we found that the formation pathway of chloroacetic acid involved multiphase processes. Our study enhances understanding of atmospheric organic chlorine chemistry and emphasizes the importance of multiphase reactions.
Renzhi Hu, Guoxian Zhang, Haotian Cai, Jingyi Guo, Keding Lu, Xin Li, Shengrong Lou, Zhaofeng Tan, Changjin Hu, Pinhua Xie, and Wenqing Liu
Atmos. Chem. Phys., 25, 3011–3028, https://doi.org/10.5194/acp-25-3011-2025, https://doi.org/10.5194/acp-25-3011-2025, 2025
Short summary
Short summary
A full suite of radical measurements (OH, HO2, RO2, and kOH) was established to accurately elucidate the limitations of oxidation in a chemically complex atmosphere. Sensitivity tests revealed that the incorporation of complex processes enabled a balance in both radical concentrations and coordinate ratios, effectively addressing the deficiency in the ozone generation mechanism. The full-chain radical detection bridged the gap between the photochemistry and the intensive oxidation level.
Dingxi Chen, Yi Liu, Zetong Niu, Ao Wang, Pius Otwil, Yuanyuan Huang, Zhongcong Sun, Xiaobing Pang, Liyang Zhan, and Longfei Yu
EGUsphere, https://doi.org/10.5194/egusphere-2025-377, https://doi.org/10.5194/egusphere-2025-377, 2025
Short summary
Short summary
We carried out studies at 11 oil and gas sites in Southwest China (an important natural gas production area), investigating the methane concentration distribution pattern and emission inventory of oil and gas industrial sites through a combination of ground monitoring and drone airborne monitoring techniques, and at the same time, utilizing stable isotope techniques to trace back the methane from the oil and gas sites.
Shuwen Guo, Xuan Zheng, Xiao He, Lewei Zeng, Liqiang He, Xian Wu, Yifei Dai, Zihao Huang, Ting Chen, Shupei Xiao, Yan You, Sheng Xiang, Shaojun Zhang, Jingkun Jiang, and Ye Wu
Atmos. Chem. Phys., 25, 2695–2705, https://doi.org/10.5194/acp-25-2695-2025, https://doi.org/10.5194/acp-25-2695-2025, 2025
Short summary
Short summary
We considered two potential influencing factors of heavy-duty diesel vehicle emissions that are rarely mentioned in the literature: cumulative mileage and ambient temperatures. The results suggest that prolonged use of heavy-duty diesel vehicles and low ambient temperatures leads to reduced engine combustion efficiency, which in turn increases tailpipe emissions significantly.
Junling Li, Chaofan Lian, Mingyuan Liu, Hao Zhang, Yongxin Yan, Yufei Song, Chun Chen, Jiaqi Wang, Haijie Zhang, Yanqin Ren, Yucong Guo, Weigang Wang, Yisheng Xu, Hong Li, Jian Gao, and Maofa Ge
Atmos. Chem. Phys., 25, 2551–2568, https://doi.org/10.5194/acp-25-2551-2025, https://doi.org/10.5194/acp-25-2551-2025, 2025
Short summary
Short summary
As a key source of hydroxyl (OH) radical, nitrous acid (HONO) has attracted much attention for its important role in the atmospheric oxidant capacity (AOC) increase. In this study, we made a comparison of the ambient levels, variation patterns, sources, and formation pathway in the warm season on the basis of continuous intensive observations at an urban site of Beijing. This work highlights the importance of HONO for the AOC in the warm season.
Xiao-Bing Li, Bin Yuan, Yibo Huangfu, Suxia Yang, Xin Song, Jipeng Qi, Xianjun He, Sihang Wang, Yubin Chen, Qing Yang, Yongxin Song, Yuwen Peng, Guiqian Tang, Jian Gao, Dasa Gu, and Min Shao
Atmos. Chem. Phys., 25, 2459–2472, https://doi.org/10.5194/acp-25-2459-2025, https://doi.org/10.5194/acp-25-2459-2025, 2025
Short summary
Short summary
Online vertical gradient measurements of volatile organic compounds (VOCs), ozone, and NOx were conducted based on a 325 m tall tower in urban Beijing. Vertical changes in the concentrations, compositions, key drivers, and environmental impacts of VOCs were analyzed in this study. We find that VOC species display differentiated vertical variation patterns and distinct roles in contributing to photochemical ozone formation with increasing height in the urban planetary boundary layer.
Alina Fiehn, Maximilian Eckl, Magdalena Pühl, Tiziana Bräuer, Klaus-Dirk Gottschaldt, Heinfried Aufmhoff, Lisa Eirenschmalz, Gregor Neumann, Felicitas Sakellariou, Daniel Sauer, Robert Baumann, Guilherme De Aguiar Ventura, Winne Nayole Cadete, Dário Luciano Zua, Manuel Xavier, Paulo Correia, and Anke Roiger
EGUsphere, https://doi.org/10.5194/egusphere-2025-635, https://doi.org/10.5194/egusphere-2025-635, 2025
Short summary
Short summary
In September 2022, the METHANE-To-Go Africa (MTGA) campaign, part of UNEP’s IMEO Methane Science Studies, conducted the first CH₄ emissions measurements from West Africa’s offshore oil and gas sector. Using an aircraft-based mass balance method, emissions from Angolan offshore facilities were quantified. Older, low-producing facilities showed higher emissions than newer ones. High-emission events were observed, highlighting the need for targeted monitoring and mitigation efforts.
Shigeyuki Ishidoya, Satoshi Sugawara, and Atsushi Okazaki
Atmos. Chem. Phys., 25, 1965–1987, https://doi.org/10.5194/acp-25-1965-2025, https://doi.org/10.5194/acp-25-1965-2025, 2025
Short summary
Short summary
The 18O/16O ratio of atmospheric oxygen, δatm(18O), is higher than that of ocean water due to isotopic effects during biospheric activities. This is known as the Dole–Morita effect, and its millennial-scale variations are recorded in ice cores. However, small variations of δatm(18O) in the present day have never been detected so far. This paper presents the first observations of diurnal, seasonal, and secular variations in δatm(18O) and applies them to evaluate oxygen, carbon, and water cycles.
Delaney B. Kilgour, Christopher M. Jernigan, Olga Garmash, Sneha Aggarwal, Shengqian Zhou, Claudia Mohr, Matt E. Salter, Joel A. Thornton, Jian Wang, Paul Zieger, and Timothy H. Bertram
Atmos. Chem. Phys., 25, 1931–1947, https://doi.org/10.5194/acp-25-1931-2025, https://doi.org/10.5194/acp-25-1931-2025, 2025
Short summary
Short summary
We report simultaneous measurements of dimethyl sulfide (DMS) and hydroperoxymethyl thioformate (HPMTF) in the eastern North Atlantic. We use an observationally constrained box model to show that cloud loss is the dominant sink of HPMTF in this region over 6 weeks, resulting in large reductions in DMS-derived products that contribute to aerosol formation and growth. Our findings indicate that fast cloud processing of HPMTF must be included in global models to accurately capture the sulfur cycle.
Jiemeng Bao, Xin Zhang, Zhenhai Wu, Li Zhou, Jun Qian, Qinwen Tan, Fumo Yang, Junhui Chen, Yunfeng Li, Hefan Liu, Liqun Deng, and Hong Li
Atmos. Chem. Phys., 25, 1899–1916, https://doi.org/10.5194/acp-25-1899-2025, https://doi.org/10.5194/acp-25-1899-2025, 2025
Short summary
Short summary
We studied carbonyl compounds' role in ozone pollution in the Chengdu Plain Urban Agglomeration, China. During heavy pollution in August 2019, we measured carbonyls at nine sites and analyzed their impact. Areas with higher carbonyl levels, like Chengdu, had worse ozone pollution. While their abundance matters, chemical reactions with other pollutants are the main drivers. Our findings show regional cooperation is vital to reducing ozone pollution effectively.
Masahito Ueyama, Taku Umezawa, Yukio Terao, Mark Lunt, and James Lawrence France
EGUsphere, https://doi.org/10.5194/egusphere-2024-3926, https://doi.org/10.5194/egusphere-2024-3926, 2025
Short summary
Short summary
Methane (CH4) emissions were measured in Megacity Osaka, Japan, using mobile and eddy covariance methods. The CH4 emissions were much higher than those reported in local inventories, with natural gas contributing up to 74 % of the emissions. Several CH4 sources not accounted for in current inventories were identified. These results emphasize the need for more comprehensive emissions tracking in urban areas to enhance climate change mitigation efforts.
Anne M. Thompson, Ryan M. Stauffer, Debra E. Kollonige, Jerald R. Ziemke, Maria Cazorla, Pawel Wolff, and Bastien Sauvage
EGUsphere, https://doi.org/10.5194/egusphere-2024-3761, https://doi.org/10.5194/egusphere-2024-3761, 2025
Short summary
Short summary
This paper uses tropical ozone profiles from balloon borne instruments and aircraft to show that ozone in the free troposphere is not growing fast except over equatorial SE Asia.
Yaru Wang, Dominik van Pinxteren, Andreas Tilgner, Erik Hans Hoffmann, Max Hell, Susanne Bastian, and Hartmut Herrmann
EGUsphere, https://doi.org/10.5194/egusphere-2024-4202, https://doi.org/10.5194/egusphere-2024-4202, 2025
Short summary
Short summary
Tropospheric ground-level ozone (O3) is a global air-quality pollutant and greenhouse gas. Long-term O3 trends from 16 stations in Saxony, Germany, were compared over three periods, revealing worsened O3 pollution over the last decade. O3 formation has been volatile organic compound (VOC)-limited at traffic and urban sites for the past 20 years. To mitigate O3 pollution, moderate nitrogen oxides and additional VOC controls, particularly in solvent use, should be prioritized in the coming years.
Baoye Hu, Naihua Chen, Rui Li, Mingqiang Huang, Jinsheng Chen, Youwei Hong, Lingling Xu, Xiaolong Fan, Mengren Li, Lei Tong, Qiuping Zheng, and Yuxiang Yang
Atmos. Chem. Phys., 25, 905–921, https://doi.org/10.5194/acp-25-905-2025, https://doi.org/10.5194/acp-25-905-2025, 2025
Short summary
Short summary
Box modeling with the Master Chemical Mechanism (MCM) was used to explore summertime peroxyacetyl nitrate (PAN) formation and its link to aerosol pollution under high-ozone conditions. The MCM model is effective in the study of PAN photochemical formation and performed better during the clean period than the haze period. Machine learning analysis identified ammonia, nitrate, and fine particulate matter as the top three factors contributing to simulation bias.
Xiansheng Liu, Xun Zhang, Marvin Dufresne, Tao Wang, Lijie Wu, Rosa Lara, Roger Seco, Marta Monge, Ana Maria Yáñez-Serrano, Marie Gohy, Paul Petit, Audrey Chevalier, Marie-Pierre Vagnot, Yann Fortier, Alexia Baudic, Véronique Ghersi, Grégory Gille, Ludovic Lanzi, Valérie Gros, Leïla Simon, Heidi Héllen, Stefan Reimann, Zoé Le Bras, Michelle Jessy Müller, David Beddows, Siqi Hou, Zongbo Shi, Roy M. Harrison, William Bloss, James Dernie, Stéphane Sauvage, Philip K. Hopke, Xiaoli Duan, Taicheng An, Alastair C. Lewis, James R. Hopkins, Eleni Liakakou, Nikolaos Mihalopoulos, Xiaohu Zhang, Andrés Alastuey, Xavier Querol, and Thérèse Salameh
Atmos. Chem. Phys., 25, 625–638, https://doi.org/10.5194/acp-25-625-2025, https://doi.org/10.5194/acp-25-625-2025, 2025
Short summary
Short summary
This study examines BTEX (benzene, toluene, ethylbenzene, xylenes) pollution in urban areas across seven European countries. Analyzing data from 22 monitoring sites, we found traffic and industrial activities significantly impact BTEX levels, with peaks during rush hours. The risk from BTEX exposure remains moderate, especially in high-traffic and industrial zones, highlighting the need for targeted air quality management to protect public health and improve urban air quality.
Yuening Li, Faqiang Zhan, Chubashini Shunthirasingham, Ying Duan Lei, Jenny Oh, Amina Ben Chaaben, Zhe Lu, Kelsey Lee, Frank A. P. C. Gobas, Hayley Hung, and Frank Wania
Atmos. Chem. Phys., 25, 459–472, https://doi.org/10.5194/acp-25-459-2025, https://doi.org/10.5194/acp-25-459-2025, 2025
Short summary
Short summary
Organophosphate esters are important humanmade trace contaminants. Measuring them in the atmospheric gas phase, particles, precipitation, and surface water in Canada, we explore seasonal concentration variability, gas–particle partitioning, precipitation scavenging, and the air–water equilibrium. Whereas higher summer concentrations and efficient precipitation scavenging conform with expectations, the lack of a relationship between compound volatility and gas–particle partitioning is puzzling.
Fanhao Meng, Baobin Han, Min Qin, Wu Fang, Ke Tang, Dou Shao, Zhitang Liao, Jun Duan, Yan Feng, Yong Huang, Ting Ni, and Pinhua Xie
Atmos. Chem. Phys., 24, 14191–14208, https://doi.org/10.5194/acp-24-14191-2024, https://doi.org/10.5194/acp-24-14191-2024, 2024
Short summary
Short summary
Comprehensive observations of HONO and NOx fluxes were conducted over paddy fields in the Huaihe River Basin. Consecutive peaks in HONO and NO fluxes suggest a potentially enhanced release of HONO and NO due to soil tillage, whereas waterlogged soil may inhibit microbial nitrification processes following irrigation. Notably, biological processes and light-driven NO2 reactions at the surface may serve as sources of HONO and influence the local HONO budget during rotary tillage.
Zhaojin An, Rujing Yin, Xinyan Zhao, Xiaoxiao Li, Yuyang Li, Yi Yuan, Junchen Guo, Yiqi Zhao, Xue Li, Dandan Li, Yaowei Li, Dongbin Wang, Chao Yan, Kebin He, Douglas R. Worsnop, Frank N. Keutsch, and Jingkun Jiang
Atmos. Chem. Phys., 24, 13793–13810, https://doi.org/10.5194/acp-24-13793-2024, https://doi.org/10.5194/acp-24-13793-2024, 2024
Short summary
Short summary
Online Vocus-PTR measurements show the compositions and seasonal variations in organic vapors in urban Beijing. With enhanced sensitivity and mass resolution, various species at a level of sub-parts per trillion (ppt) and organics with multiple oxygens (≥ 3) were observed. The fast photooxidation process in summer leads to an increase in both concentration and proportion of organics with multiple oxygens, while, in other seasons, the variations in them could be influenced by mixed sources.
Ross Charles Petersen, Thomas Holst, Cheng Wu, Radovan Krejci, Jeremy Chan, Claudia Mohr, and Janne Rinne
EGUsphere, https://doi.org/10.5194/egusphere-2024-3410, https://doi.org/10.5194/egusphere-2024-3410, 2024
Short summary
Short summary
Ecosystem-scale emissions of biogenic volatile organic compounds (BVOCs) are important for atmospheric chemistry. Here we investigate boreal BVOC fluxes from a forest in central Sweden. BVOC fluxes were measured above-canopy using proton-transfer-reaction mass spectrometry, while compound-specific monoterpene (MT) fluxes were assessed using a concentration gradient method. We also evaluate the impact of chemical degradation on observed sesquiterpene (SQT) and nighttime MT fluxes.
Bowen Zhang, Dong Zhang, Zhe Dong, Xinshuai Song, Ruiqin Zhang, and Xiao Li
Atmos. Chem. Phys., 24, 13587–13601, https://doi.org/10.5194/acp-24-13587-2024, https://doi.org/10.5194/acp-24-13587-2024, 2024
Short summary
Short summary
To gain insight into the impact of changes due to epidemic control policies, we undertook continuous online monitoring of volatile organic compounds (VOCs) at an urban site in Zhengzhou over a 2-month period. This study examines the characteristics of VOCs, their sources, and their temporal evolution. It also assesses the impact of the policy change on VOC pollution during the monitoring period, thus providing a basis for further research on VOC pollution and source control.
Jakob Boyd Pernov, Jens Liengaard Hjorth, Lise Lotte Sørensen, and Henrik Skov
Atmos. Chem. Phys., 24, 13603–13631, https://doi.org/10.5194/acp-24-13603-2024, https://doi.org/10.5194/acp-24-13603-2024, 2024
Short summary
Short summary
Arctic ozone depletion events (ODEs) occur every spring and have vast implications for the oxidizing capacity, radiative balance, and mercury oxidation. In this study, we analyze ozone, ODEs, and their connection to meteorological and air mass history variables through statistical analyses, back trajectories, and machine learning (ML) at Villum Research Station. ODEs are favorable under sunny, calm conditions with air masses arriving from northerly wind directions with sea ice contact.
Hagninou Elagnon Venance Donnou, Aristide Barthélémy Akpo, Money Ossohou, Claire Delon, Véronique Yoboué, Dungall Laouali, Marie Ouafo-Leumbe, Pieter Gideon Van Zyl, Ousmane Ndiaye, Eric Gardrat, Maria Dias-Alves, and Corinne Galy-Lacaux
Atmos. Chem. Phys., 24, 13151–13182, https://doi.org/10.5194/acp-24-13151-2024, https://doi.org/10.5194/acp-24-13151-2024, 2024
Short summary
Short summary
Ozone is a secondary air pollutant that is detrimental to human and plant health. A better understanding of its chemical evolution is a challenge for Africa, where it is still undersampled. Out of 14 sites examined (1995–2020), high levels of O3 are reported in southern Africa. The dominant chemical processes leading to O3 formation are identified. A decrease in O3 is observed at Katibougou (Mali) and Banizoumbou (Niger), and an increase is found at Zoétélé (Cameroon) and Skukuza (South Africa).
Junwei Song, Georgios I. Gkatzelis, Ralf Tillmann, Nicolas Brüggemann, Thomas Leisner, and Harald Saathoff
Atmos. Chem. Phys., 24, 13199–13217, https://doi.org/10.5194/acp-24-13199-2024, https://doi.org/10.5194/acp-24-13199-2024, 2024
Short summary
Short summary
Biogenic volatile organic compounds (BVOCs) and organic aerosol (OA) particles were measured online in a stressed spruce-dominated forest. OA was mainly attributed to the monoterpene oxidation products. The mixing ratios of BVOCs were higher than the values previously measured in other temperate forests. The results demonstrate that BVOCs are influenced not only by meteorology and biogenic emissions but also by local anthropogenic emissions and subsequent chemical transformation processes.
Sachin Mishra, Vinayak Sinha, Haseeb Hakkim, Arpit Awasthi, Sachin D. Ghude, Vijay Kumar Soni, Narendra Nigam, Baerbel Sinha, and Madhavan N. Rajeevan
Atmos. Chem. Phys., 24, 13129–13150, https://doi.org/10.5194/acp-24-13129-2024, https://doi.org/10.5194/acp-24-13129-2024, 2024
Short summary
Short summary
We quantified 111 gases using mass spectrometry to understand how seasonal and emission changes lead from clean air in the monsoon season to extremely polluted air in the post-monsoon season in Delhi. Averaged total mass concentrations (260 µg m-3) were > 4 times in polluted periods, driven by biomass burning emissions and reduced atmospheric ventilation. Reactive gaseous nitrogen, chlorine, and sulfur compounds hitherto unreported from such a polluted environment were discovered.
Gérard Ancellet, Camille Viatte, Anne Boynard, François Ravetta, Jacques Pelon, Cristelle Cailteau-Fischbach, Pascal Genau, Julie Capo, Axel Roy, and Philippe Nédélec
Atmos. Chem. Phys., 24, 12963–12983, https://doi.org/10.5194/acp-24-12963-2024, https://doi.org/10.5194/acp-24-12963-2024, 2024
Short summary
Short summary
Characterization of ozone pollution in urban areas benefited from a measurement campaign in summer 2022 in the Paris region. The analysis is based on 21 d of lidar and aircraft observations. The main objective is an analysis of the sensitivity of ozone pollution to the micrometeorological processes in the urban atmospheric boundary layer and the transport of regional pollution. The paper also discusses to what extent satellite observations can track observed ozone plumes.
Xiaoyi Zhang, Wanyun Xu, Weili Lin, Gen Zhang, Jinjian Geng, Li Zhou, Huarong Zhao, Sanxue Ren, Guangsheng Zhou, Jianmin Chen, and Xiaobin Xu
Atmos. Chem. Phys., 24, 12323–12340, https://doi.org/10.5194/acp-24-12323-2024, https://doi.org/10.5194/acp-24-12323-2024, 2024
Short summary
Short summary
Ozone (O3) deposition is a key process that removes surface O3, affecting air quality, ecosystems and climate change. We conducted O3 deposition measurement over a wheat canopy using a newly relaxed eddy accumulation flux system. Large variabilities in O3 deposition were detected, mainly determined by crop growth and modulated by various environmental factors. More O3 deposition observations over different surfaces are needed for exploring deposition mechanisms and model optimization.
Honglei Wang, David W. Tarasick, Jane Liu, Herman G. J. Smit, Roeland Van Malderen, Lijuan Shen, Romain Blot, and Tianliang Zhao
Atmos. Chem. Phys., 24, 11927–11942, https://doi.org/10.5194/acp-24-11927-2024, https://doi.org/10.5194/acp-24-11927-2024, 2024
Short summary
Short summary
In this study, we identify 23 suitable pairs of sites from World Ozone and Ultraviolet Radiation Data Centre (WOUDC) and In-service Aircraft for a Global Observing System (IAGOS) datasets (1995 to 2021), compare the average vertical distributions of tropospheric O3 from ozonesonde and aircraft measurements, and analyze the differences based on ozonesonde type and station–airport distance.
Noémie Taquet, Wolfgang Stremme, María Eugenia González del Castillo, Victor Almanza, Alejandro Bezanilla, Olivier Laurent, Carlos Alberti, Frank Hase, Michel Ramonet, Thomas Lauvaux, Ke Che, and Michel Grutter
Atmos. Chem. Phys., 24, 11823–11848, https://doi.org/10.5194/acp-24-11823-2024, https://doi.org/10.5194/acp-24-11823-2024, 2024
Short summary
Short summary
We characterize the variability in CO and CO2 emissions over Mexico City from long-term time-resolved Fourier transform infrared spectroscopy solar absorption and surface measurements from 2013 to 2021. Using the average intraday CO growth rate from total columns, the average CO / CO2 ratio and TROPOMI data, we estimate the interannual variability in the CO and CO2 anthropogenic emissions of Mexico City, highlighting the effect of an unprecedented drop in activity due to the COVID-19 lockdown.
Akima Ringsdorf, Achim Edtbauer, Bruna Holanda, Christopher Poehlker, Marta O. Sá, Alessandro Araújo, Jürgen Kesselmeier, Jos Lelieveld, and Jonathan Williams
Atmos. Chem. Phys., 24, 11883–11910, https://doi.org/10.5194/acp-24-11883-2024, https://doi.org/10.5194/acp-24-11883-2024, 2024
Short summary
Short summary
We show the average height distribution of separately observed aldehydes and ketones over a day and discuss their rainforest-specific sources and sinks as well as their seasonal changes above the Amazon. Ketones have much longer atmospheric lifetimes than aldehydes and thus different implications for atmospheric chemistry. However, they are commonly observed together, which we overcome by measuring with a NO+ chemical ionization mass spectrometer for the first time in the Amazon rainforest.
Theresa Harlass, Rebecca Dischl, Stefan Kaufmann, Raphael Märkl, Daniel Sauer, Monika Scheibe, Paul Stock, Tiziana Bräuer, Andreas Dörnbrack, Anke Roiger, Hans Schlager, Ulrich Schumann, Magdalena Pühl, Tobias Schripp, Tobias Grein, Linda Bondorf, Charles Renard, Maxime Gauthier, Mark Johnson, Darren Luff, Paul Madden, Peter Swann, Denise Ahrens, Reetu Sallinen, and Christiane Voigt
Atmos. Chem. Phys., 24, 11807–11822, https://doi.org/10.5194/acp-24-11807-2024, https://doi.org/10.5194/acp-24-11807-2024, 2024
Short summary
Short summary
Emissions from aircraft have a direct impact on our climate. Here, we present airborne and ground-based measurement data of nitrogen oxides that were collected in the exhaust of an Airbus aircraft. We study the impact of burning fossil and sustainable aviation fuel on nitrogen oxide emissions at different engine settings related to combustor temperature, pressure and fuel flow. Further, we compare observations with engine emission models.
Simone T. Andersen, Max R. McGillen, Chaoyang Xue, Tobias Seubert, Patrick Dewald, Gunther N. T. E. Türk, Jan Schuladen, Cyrielle Denjean, Jean-Claude Etienne, Olivier Garrouste, Marina Jamar, Sergio Harb, Manuela Cirtog, Vincent Michoud, Mathieu Cazaunau, Antonin Bergé, Christopher Cantrell, Sebastien Dusanter, Bénédicte Picquet-Varrault, Alexandre Kukui, Abdelwahid Mellouki, Lucy J. Carpenter, Jos Lelieveld, and John N. Crowley
Atmos. Chem. Phys., 24, 11603–11618, https://doi.org/10.5194/acp-24-11603-2024, https://doi.org/10.5194/acp-24-11603-2024, 2024
Short summary
Short summary
Using measurements of various trace gases in a suburban forest near Paris in the summer of 2022, we were able to gain insight into the sources and sinks of NOx (NO+NO2) with a special focus on their nighttime chemical and physical loss processes. NO was observed as a result of nighttime soil emissions when O3 levels were strongly depleted by deposition. NO oxidation products were not observed at night, indicating that soil and/or foliar surfaces are an efficient sink of reactive N.
Lee Tiszenkel, James H. Flynn, and Shan-Hu Lee
Atmos. Chem. Phys., 24, 11351–11363, https://doi.org/10.5194/acp-24-11351-2024, https://doi.org/10.5194/acp-24-11351-2024, 2024
Short summary
Short summary
Ammonia and amines are important ingredients for aerosol formation in urban environments, but the measurements of these compounds are extremely challenging. Our observations show that urban ammonia and amines in Houston are emitted from urban sources, and diurnal variations in their concentrations are likely governed by gas-to-particle conversion and emissions.
Arpit Awasthi, Baerbel Sinha, Haseeb Hakkim, Sachin Mishra, Varkrishna Mummidivarapu, Gurmanjot Singh, Sachin D. Ghude, Vijay Kumar Soni, Narendra Nigam, Vinayak Sinha, and Madhavan N. Rajeevan
Atmos. Chem. Phys., 24, 10279–10304, https://doi.org/10.5194/acp-24-10279-2024, https://doi.org/10.5194/acp-24-10279-2024, 2024
Short summary
Short summary
We use 111 volatile organic compounds (VOCs), PM10, and PM2.5 in a positive matrix factorization (PMF) model to resolve 11 pollution sources validated with chemical fingerprints. Crop residue burning and heating account for ~ 50 % of the PM, while traffic and industrial emissions dominate the gas-phase VOC burden and formation potential of secondary organic aerosols (> 60 %). Non-tailpipe emissions from compressed-natural-gas-fuelled commercial vehicles dominate the transport sector's PM burden.
Luke D. Schiferl, Cong Cao, Bronte Dalton, Andrew Hallward-Driemeier, Ricardo Toledo-Crow, and Róisín Commane
Atmos. Chem. Phys., 24, 10129–10142, https://doi.org/10.5194/acp-24-10129-2024, https://doi.org/10.5194/acp-24-10129-2024, 2024
Short summary
Short summary
Carbon monoxide (CO) is an air pollutant and an important indicator of the incomplete combustion of fossil fuels in cities. Using 4 years of winter and spring observations in New York City, we found that both the magnitude and variability of CO from the metropolitan area are greater than expected. Transportation emissions cannot explain the missing and variable CO, which points to energy from buildings as a likely underappreciated source of urban air pollution and greenhouse gas emissions.
Cited articles
Allen, R. J., Sherwood, S. C., Norris, J. R., and Zender, C. S.: Recent
Northern Hemisphere tropical expansion primarily driven by black carbon and
tropospheric ozone, Nature, 485, 350–353, https://doi.org/10.1038/nature11097, 2012.
An, J., Zou, J., Wang, J., Lin, X., Zhu, B.: Differences in ozone
photochemical characteristics between the megacity Nanjing and its suburban
surroundings, Yangtze River Delta, China, Environ. Sci. Pollut. R., 22,
19607–19617, 2015.
Arnott, W. P., Hamasha, K., Moosmuller, H., Sheridan, P. J., and Ogren, J.
A.: Towards aerosol light-absorption measurements with a 7-wavelength
aethalometer: evaluation with a photoacoustic instrument and 3-wavelength
nephelometer, Aerosol Sci. Tech., 39, 17–29,
https://doi.org/10.1080/027868290901972, 2005.
Atkinson, R.: Atmospheric chemistry of VOCs and NOx, Atmos. Environ., 34,
2063–2101, https://doi.org/10.1016/S1352-2310(99)00460-4, 2000.
Badarinath, K. V. S., Kharol, S. K., Chand, T. R. K., Parvathi, Y. G.,
Anasuya, T., and Jyothsna, A. N.: Variations in black carbon aerosol, carbon
monoxide and ozone over an urban area of Hyderabad, India, during the forest
fire season, Atmos. Res., 85, 18–26, 2007.
Baker, A. K., Beyersdorf, A. J., Doezema, L. A., Katzenstein, A., Meinardi,
S., Simpson, I. J., Blake, D. R., and Rowland, F. S.: Measurements of nonmethane
hydrocarbons in 28 United States cities, Atmos. Environ., 42,
170–182, 2008.
Chameides, W. L., Yu, H., Liu, S. C., Bergin, M., Zhou, X., Mearns, L.,
Wang., G., Kiang, C. S., Saylor, R. D., Luo, C., Huang, Y., Steiner, A., and
Giorgi, F.: Case study of the effects of atmospheric aerosols and regional
haze on agriculture: An opportunity to enhance crop yields in China through
emission controls?, P. Natl. Acad. Sci. USA, 96, 13626–13633, 1999a.
Chameides, W. L., Li, X., Tang, X., Zhou, X., Luo, C., Kiang, C. S., John,
J. St., Saylor, R. D., Liu, S. C., Lam, K. S., Wang, T., and Giorgi, F.: Is
ozone pollution affecting crop yields in China, Geophys. Res. Lett., 26,
867–870, 1999b.
Chen, T., He, J., Lu, X. W., She, J. F., and Guan, Z. Q.: Spatial and Temporal
Variations of PM2.5 and Its Relation to Meteorological Factors in the Urban
Area of Nanjing, China, Int. J. Environ. Res. Pu., 13, 921, https://doi.org/10.3390/ijerph13090921, 2016.
Cheung, V. T. F. and Wang, T.: Observational study of ozone pollution at a
rural site in the Yangtze Delta of China, Atmos. Environ., 35, 4947–4958, 2001.
Chow, J. C., Watson, J. G., Lowenthal, D. H., Chen, L.-W. A., and Motallebi, N.:
PM2.5 source profiles for black and organic carbon emission inventories,
Atmos. Environ., 45, 5407–5414, 2011.
Collaud Coen, M., Weingartner, E., Apituley, A., Ceburnis, D.,
Fierz-Schmidhauser, R., Flentje, H., Henzing, J. S., Jennings, S. G.,
Moerman, M., Petzold, A., Schmid, O., and Baltensperger, U.: Minimizing light
absorption measurement artifacts of the Aethalometer: evaluation of five
correction algorithms, Atmos. Meas. Tech., 3, 457–474,
https://doi.org/10.5194/amt-3-457-2010, 2010.
Deng, J., Wang, T., Jiang, Z., Xie, M., Zhang, R., Huang, X., and Zhu, J.:
Characterization of visibility and its affecting factors over Nanjing, China,
Atmos. Res., 101, 681–691, 2011.
Deng, J. J., Wang, T. J., Liu, L., and Jiang, F.: Modeling heterogeneous chemical
processes on aerosol surface, Particuology, 8, 308–318, 2010.
Derwent, R. G., Ryall, D. B., Jennings, S. G., Spain, T. G., and Simmonds,
P. G.: Black carbon aerosol and carbon monoxide in European regionally
polluted air masses at Mace Head, Ireland during 1995–1998, Atmos. Environ.,
35, 6371–6378, 2001.
Ding, A. J., Fu, C. B., Yang, X. Q., Sun, J. N., Zheng, L. F., Xie, Y. N.,
Herrmann, E., Nie, W., Petäjä, T., Kerminen, V.-M., and Kulmala, M.:
Ozone and fine particle in the western Yangtze River Delta: an overview of
1 yr data at the SORPES station, Atmos. Chem. Phys., 13, 5813–5830,
https://doi.org/10.5194/acp-13-5813-2013, 2013.
Draxler, R. R. and Hess, G. D.: An overview of the HYSPLIT 4 modeling system
for trajectories dispersion and deposition, Aust. Meteorol. Mag., 47,
295–308, 1998.
Draxler, R. R. and Rolph, G. D.: HYSPLIT (HYbrid Single-Particle
Lagrangian Integrated Trajectory) Model Access Via NOAA ARL READY Website,
NOAA Air Resources Laboratory, Silver Spring, MD, 2013.
Eichler, H., Cheng, Y. F., Birmili, W., Nowak, A., Wiedensohler, A.,
Brüggemann, E., Gnauk, T., Herrmann, H., Althausen, D., Ansmann, A.,
Engelmann, R., Tesche, M., Wendisch, M., Zhang, Y. H., Hu, M., Liu, S., and
Zeng, L. M.: Hygroscopic properties and extinction of aerosol particles at
ambient relative humidity in South-Eastern China, Atmos. Environ., 42,
6321–6334, https://doi.org/10.1016/j.atmosenv.2008.05.007, 2008.
Gao, J., Wang, T., Ding, A., and Liu, C.: Observational study of ozone and
carbon monoxide at the summit of mount Tai (1534 m a.s.l.) in
central-eastern China, Atmos. Environ., 39, 4779–4791, 2005.
Geng, F. H., Tie, X. X., Xu, J. M., Zhou, G. Q., Peng, L., Gao, W., Tang,
X., and Zhao, C. S.: Characterizations of ozone, NOx, and
VOCs measured in Shanghai, China, Atmos. Environ., 42, 6873–6883, 2008.
Gong, W., Zhang, T. H., Zhu, Z. M., Ma, Y. Y., Ma, X., and Wang, W.: Characteristics
of PM1.0, PM2.5 and PM10 and their relation to black carbon in
Wuhan, central China, Atmosphere, 6, 1377–1387, 2015.
Guo, H., Wang, T., Simpson, I., Blake, D., Yu, X., Kwok, Y.,
and Li, Y. S.: Source contributions to ambient VOCs
and CO at a rural site in eastern China, Atmos. Environ., 38, 4551–4560,
2004.
Han, S. Q., Bian, H., Feng, Y. C., Liu, A. X., Li, X. J., Zeng, F., and Zhang,
X.: Analysis of the relationship between O3, NO and NO2 in Tianjin,
China, Aerosol Air Qual. Res., 11, 128–139, https://doi.org/10.4209/aaqr.2010.07.0055,
2011.
Huang, F., Li, X., Wang, C., Xu, Q., Wang, W., Luo, Y., Tao, L., Gao, Q.,
Guo, J., and Chen, S.: PM2.5 spatiotemporal variations and the relationship
with meteorological factors during 2013–2014 in Beijing, China, PLoS ONE,
10, e0141642, https://doi.org/10.1371/journal.pone.0141642, 2015.
Huang, X., Li, M., Li, J., and Song, Y.: A high-resolution emission inventory of
crop burning in fields in China based on MODIS Thermal Anomalies/Fire
products, Atmos. Environ., 50, 9–15, 2012.
Huang, X. X., Wang, T. J., Jiang, F., Liao, J. B., Cai, Y. F., Yin, C. Q.,
Zhu, J. L., and Han, Y.: Studies on a severe dust storm in East Asia and its
impact on the air quality of Nanjing, China, Aerosol Air Qual. Res., 13,
179–193, https://doi.org/10.4209/aaqr.2012.05.0108, 2013.
Jennings, S. G., Spain, T. G., Doddridge, B. G., Maring, H., Kelly, B. P.,
and Hansen, A. D. A.: Concurrent measurements of black carbon aerosol and
carbon monoxide at Mace Head, J. Geophys. Res.-Atmos., 101, 19447–19454,
1996.
Jerrett, M., Finkelstein, M. M., Brook, J. R., Arain, M. A., Kanaroglou, P.,
Stieb, D. M., Gilbert, N. L., Verma, D., Finkelstein, N., Chapman, K. R., and
Sears, M. R.: A Cohort Study of Traffic-Related Air Pollution and Mortality
in Toronto, Ontario, Canada, Environ. Health Persp., 117, 772–777, 2009.
Jiang, J., Zheng, Y. F., Liu, J. J., and Fan, J. J.: Observational research
on planetary boundary layer by lidar over Nanjing city, Environ. Sci.
Technol., 37, 22–27, 2014 (in Chinese).
Jiang, L., Zhang, Z. F., Zhu, B., Shen, Y., Wang, H. L., Shi, S. S., and Sha, D.
D.: Comparison of parameterizations for the atmospheric extinction
coefficient in Lin'an, China, Sci. Total Environ., 621, 507–515,
https://doi.org/10.1016/j.scitotenv.2017.11.182, 2018.
Khoder, M. I.: Atmospheric conversion of sulfur dioxide to particulate
sulfate and nitrogen dioxide to particulate nitrate and gaseous nitric acid
in an urban area, Chemosphere, 49, 675–684, 2002.
Kristjánsson, J. E.: Studies of the aerosol indirect effect from
sulfate and black carbon aerosols, J. Geophys. Res., 107, 4246, https://doi.org/10.1029/2001JD000887,
2002.
Kumar, R., Barth, M. C., Madronich, S., Naja, M., Carmichael, G. R., Pfister,
G. G., Knote, C., Brasseur, G. P., Ojha, N., and Sarangi, T.: Effects of dust
aerosols on tropospheric chemistry during a typical pre-monsoon season dust
storm in northern India, Atmos. Chem. Phys., 14, 6813–6834,
https://doi.org/10.5194/acp-14-6813-2014, 2014.
Larson, S. M. and Cass, G. R.: Characteristics of summer midday
low-visibility events in the Los Angeles area, Environ. Sci. Technol.,
23, 281–289, https://doi.org/10.1021/es00180a003, 1989.
Li, G. H., Zhang, R. Y., and Fan, J. W.: Impacts of black carbon aerosol on
photolysis and ozone, J. Geophys. Res., 110, D23206, https://doi.org/10.1029/2005JD005898,
2005.
Li, J., Bo, Y., and Xie, S.: Estimating emissions from crop residue open burning
in China based on statistics and MODIS fire products, J. Environ. Sci., 44,
158–167, 2016.
Li, J., Wang, Z., Wang, X., Yamaji, K., Takigawa, M., Kanaya, Y., Pochanart,
P., Liu, Y., Irie, H., Hu, B., Tanimoto, H., and Akimoto, H.: Impacts of
aerosols on summertime tropospheric photolysis frequencies and
photochemistry over Central Eastern China, Atmos. Environ., 45, 1817–1829,
https://doi.org/10.1016/j.atmosenv.2011.01.016, 2011.
Li, M., Wang, T., Xie, M., Li, S., Zhuang, B., and Chen, P.: Impacts of
aerosol-radiation feedback on local air quality during a severe haze episode
in Nanjing megacity, eastern China, Tellus B, 69, 1339548,
https://doi.org/10.1080/16000889.2017.1339548,
2017a.
Li, M., Zhang, Q., Kurokawa, J.-I., Woo, J.-H., He, K., Lu, Z., Ohara, T.,
Song, Y., Streets, D. G., Carmichael, G. R., Cheng, Y., Hong, C., Huo, H.,
Jiang, X., Kang, S., Liu, F., Su, H., and Zheng, B.: MIX: a mosaic Asian
anthropogenic emission inventory under the international collaboration
framework of the MICS-Asia and HTAP, Atmos. Chem. Phys., 17, 935–963,
https://doi.org/10.5194/acp-17-935-2017, 2017b.
Li, M., Wang, T., Xie, M., Li, S., Zhuang, B., and Chen, P.: Agricultural fire
impacts on ozone photochemistry over the Yangtze River Delta region, East
China, J. Geophys. Res.-Atmos., 123, 6605–6623, https://doi.org/10.1029/2018JD028582,
2018.
Liao, H. and Seinfeld, J. H.: Global impacts of gas-phase chemistry
aerosol interactions on direct radiative forcing by anthropogenic aerosols
and ozone, J. Geophys. Res., 110, D18208, https://doi.org/10.1029/2005jd005907, 2005.
Lin, W., Xu, X., Zhang, X., and Tang, J.: Contributions of pollutants from
North China Plain to surface ozone at the Shangdianzi GAW Station, Atmos.
Chem. Phys., 8, 5889–5898, https://doi.org/10.5194/acp-8-5889-2008, 2008.
Liu, P. F., Zhao, C. S., Göbel, T., Hallbauer, E., Nowak, A., Ran, L., Xu,
W. Y., Deng, Z. Z., Ma, N., Mildenberger, K., Henning, S., Stratmann, F., and
Wiedensohler, A.: Hygroscopic properties of aerosol particles at high
relative humidity and their diurnal variations in the North China Plain,
Atmos. Chem. Phys., 11, 3479–3494, https://doi.org/10.5194/acp-11-3479-2011,
2011.
Luo, C., St. John, J. C., Zhou, X. J., Lam, K. S., Wang, T., and Chameides,
W. L.: A nonurban ozone air pollution episode over eastern China:
Observation and model simulation, J. Geophys. Res., 105, 1889–1908, 2000.
Mcgowan, H. and Clark, A.: Identification of dust transport pathways from
Lake Eyre, Australia using Hysplit, Atmos. Environ., 42, 6915–6925, 2008.
Meng, Z. Y., Xu, X. B., Yan, P., Ding, G. A., Tang, J., Lin, W. L., Xu, X.
D., and Wang, S. F.: Characteristics of trace gaseous pollutants at a
regional background station in Northern China, Atmos. Chem. Phys., 9,
927–936, https://doi.org/10.5194/acp-9-927-2009, 2009.
Ministry of Environmental Protection of China (MEP): Ambient air quality
standards (GB 3095–2012), China Environmental Science Press, Beijing, 12
pp., 2012.
Müller, T., Laborde, M., Kassell, G., and Wiedensohler, A.: Design and
performance of a three-wavelength LED-based total scatter and backscatter
integrating nephelometer, Atmos. Meas. Tech., 4, 1291–1303,
https://doi.org/10.5194/amt-4-1291-2011, 2011.
Novelli, P. C., Masarilea, K. A., and Lang, P. M.: Distributions and recent
changes of carbon monoxide in the lower troposphere, J. Geophys. Res.-Atmos.,
103, 19015–19033, https://doi.org/10.1029/98JD01366, 1998.
Pan, X. L., Kanaya, Y., Wang, Z. F., Liu, Y., Pochanart, P., Akimoto, H.,
Sun, Y. L., Dong, H. B., Li, J., Irie, H., and Takigawa, M.: Correlation of
black carbon aerosol and carbon monoxide in the high-altitude environment of
Mt. Huang in Eastern China, Atmos. Chem. Phys., 11, 9735–9747,
https://doi.org/10.5194/acp-11-9735-2011, 2011.
Petzold, A., Kopp, C., and Niessner, R.: The dependence of the specific
attenuation cross-section on black carbon mass fraction and particle size,
Atmos. Environ., 31, 661–672, 1997.
Qian, L., Yan, Y., and Qian, J. M.: An Observational Study on Physical and
Optical Properties of Atmospheric Aerosol in Autumn in Nanjing,
Meteorological and Environmental Research, 5, 24–30, 2014.
Roberts, P. T. and Friedlander, S. K.: Analysis of sulfur in deposited aerosol
particles by vaporization and flame photometric detection, Atmos. Environ.,
10, 403–408, 1976.
Sassen, K.: Indirect climate forcing over the western US from Asian
dust storms, Geophys. Res. Lett., 29, 1465, https://doi.org/10.1029/2001GL014051, 2002.
Schleicher, N., Cen, K., and Norra, S.: Daily variations of black carbon and
element concentrations of atmospheric particles in the Beijing megacity –
Part 1: General temporal course and source identification, Chem.
Erde-Geochem., 73, 51–60, 2013.
Schmid, O., Artaxo, P., Arnott, W. P., Chand, D., Gatti, L. V., Frank, G. P.,
Hoffer, A., Schnaiter, M., and Andreae, M. O.: Spectral light absorption by
ambient aerosols influenced by biomass burning in the Amazon Basin. I:
Comparison and field calibration of absorption measurement techniques, Atmos.
Chem. Phys., 6, 3443–3462, https://doi.org/10.5194/acp-6-3443-2006, 2006.
Shao, M., Tang, X., Zhang, Y., and Li, W.: City clusters in China: air and
surface water pollution, Front. Ecol. Environ., 4, 353–361, 2006.
Shen, G. F., Yuan, S. Y., Xie, Y. N., Xia, S. J., Li, L., Yao, Y. K., Qiao,
Y. Z., Zhang, J., Zhao, Q. Y., and Ding, A. J.: Ambient levels and temporal
variations of PM2.5 and PM10 at a residential site in the
mega-city, Nanjing, in the western Yangtze River Delta, China, J. Environ.
Sci. Heal. A, 49, 171–178, 2014.
Shi, C., Wang, S., Liu, R., Zhou, R., Li, D., Wang, W.,
Li, Z., Cheng, T., and Zhou, B.: A
study of aerosol optical properties during ozone pollution episodes in 2013
over Shanghai, China, Atmos. Res., 153, 235–249, 2015.
Song, W., Jia, H., Huang, J., and Zhang, Y.: A satellite-based geographically
weighted regression model for regional PM2.5 estimation over the Pearl
River Delta region in China, Remote Sens. Environ., 154, 1–7, 2014.
Spackman, J. R., Schwarz, J. P., Gao, R. S., Watts, L. A., Thomson, D. S.,
Fahey, D. W., Holloway, J. S., de Gouw, J. A., Trainer, M., and Ryerson, T.
B.: Empirical correlations between black carbon aerosol and carbon monoxide
in the lower and middle troposphere, Geophys. Res. Lett., 35, L19816,
https://doi.org/10.1029/2008GL035237, 2008.
Stein, A. F., Draxler, R. R., Rolph, G. D., Stunder, B. J. B., Cohen, M. D.,
and Ngan, F.: NOAA'S Hysplit Atmospheric Transport and Dispersion Modeling
System, B. Am. Meteorol. Soc., 96, 2059–2077, https://doi.org/10.1175/BAMS-D-14-00110.1,
2016.
Streets, D. G., Gupta, S., Waldhoff, S. T., Wang, M. Q., Bond, T. C., and Bo, Y.
Y.: Black carbon emissions in China, Atmos. Environ., 35, 4281–4296, 2001.
Tegen, I. and Schepanski, K.: The global distribution of mineral dust, IOP
C. Ser. Earth Env., 7, 012001, https://doi.org/10.1088/1755-1307/7/1/012001, 2009.
Tu, J., Xia, Z. G., Wang, H. S., and Li, W. Q.: Temporal variations in
surface ozone and its precursors and meteorological effects at an urban site
in China, Atmos. Res., 85, 310–337, 2007.
van Donkelaar, A., Martin, R. V., Brauer, M., Kahn, R., Levy, R., Verduzco,
C., and Villeneuve, P. J.: Global estimates of ambient fine particulate
matter concentrations from satellite-based aerosol optical depth: development
and application, Environ. Health Persp., 118, 847–855, 2010.
Verma, R. L., Sahu, L. K., Kondo, Y., Takegawa, N., Han, S., Jung, J. S.,
Kim, Y. J., Fan, S., Sugimoto, N., Shammaa, M. H., Zhang, Y. H., and Zhao,
Y.: Temporal variations of black carbon in Guangzhou, China, in summer 2006,
Atmos. Chem. Phys., 10, 6471–6485, https://doi.org/10.5194/acp-10-6471-2010,
2010.
von Schneidemesser, E., Monks, P. S., and Plass-Duelmer, C.: Global
comparison of VOC and CO observations in urban areas, Atmos. Environ., 44,
5053–5064, 2010.
Wang, G. H., Huang, L. M., Gao, S. X., Gao, S. T., and Wang, L. S.:
Characterization of watersoluble species of PM10 and PM2.5aerosols
in urban area in Nanjing, China, Atmos. Environ., 36, 1299–1307, 2002.
Wang, H. L., Zhuang, Y. H., Wang, Y., Sun, Y. L., Yuan, H., Zhuang, G.
S., and Hao, Z. P.: Long-term monitoring and source apportionment of
PM2.5/PM10 in Beijing, China, J. Environ. Sci., 20, 1323–1327,
2008.
Wang, M., Shao, M., Chen, W., Yuan, B., Lu, S., Zhang, Q., Zeng, L., and
Wang, Q.: A temporally and spatially resolved validation of emission
inventories by measurements of ambient volatile organic compounds in Beijing,
China, Atmos. Chem. Phys., 14, 5871–5891,
https://doi.org/10.5194/acp-14-5871-2014, 2014.
Wang, M. Y., Cao, C. X., Li, G. S., and Singh, R. P.: Analysis of a severe
prolonged regional haze episode in the Yangtze River Delta, China, Atmos.
Environ., 102, 112–121, 2015.
Wang, P. and Zhao, W.: Assessment of ambient volatile organic compounds (VOCs)
near major roads in urban Nanjing, China, Atmos. Res., 89, 289–297,
https://doi.org/10.1016/j.atmosres.2008.03.013,
2008.
Wang, T., Cheung, V. T. F., Anson, M., and Li, Y. S.: Ozone and related
gaseous pollutants in the boundary layer of eastern China: overview of the
recent measurements at a rural site, Geophys. Res. Lett., 28, 2373–2376,
2001.
Wang, T., Cheung, T., Li, Y., Yu, X., and Blake, D.: Emission
characteristics of CO, NOx, SO2 and indications of
biomass burning observed at a rural site in eastern China, J. Geophys.
Res.-Atmos., 107, D12, https://doi.org/10.1029/2001JD000724, 2002.
Wang, T., Poon, C. N., Kwok, Y. H., and Li, Y. S.: Characterizing the
temporal variability and emission patterns of pollution plumes in the Pearl
River Delta of China, Atmos. Environ., 37, 3539–3550, 2003.
Wang, T., Wong, C., Cheung, T., Blake, D., Arimoto, R., Baumann, K., Tang, J.,
Ding, G., Yu, X., Li, Y., Streets, D., and Simpson, I.: Relationships of trace
gases and aerosols and the emission characteristics at Lin'an, a rural site
in eastern China, during spring 2001, J. Geophys. Res.-Atmos., 109, D19S05,
https://doi.org/10.1029/2003JD004119, 2004.
Wang, T., Xue, L. K., Brimblecombe, P., Lam, Y. F., Li, L., and Zhang, L.:
Ozone pollution in China: A review of concentrations, meteorological
influences, chemical precursors, and effects, Sci. Total Environ., 575,
1582–1596, 2017.
Wang, T. J., Zhuang, B. L., Li, S., Liu, J., Xie, M., Yin, C. Q., Zhang, Y.,
Yuan, C., Zhu, J. L., Ji, L. Q., and Han, Y.: The interactions between
anthropogenic aerosols and the East Asian summer monsoon using RegCCMS, J.
Geophys. Res.-Atmos., 120, 5602–5621, https://doi.org/10.1002/2014JD022877, 2015.
Wang, X., Li, J., Zhang, Y., Xie, S., and Tang, X.: Ozone source
attribution during a severe photochemical smog episode in Beijing, China,
Sci. China Ser. B, 52, 1270–1280, 2009.
Wang, Y., Ying, Q., Hu, J., and Zhang, H.: Spatial and temporal variations of
six criteria air pollutants in 31 provincial capital cities in China during
2013–2014, Environ. Int., 73, 413–422, 2014.
Wang, Y., Wang, X., Kondo, Y., Kajino, M., Munger, J. W., and Hao, J.:
Black carbon and its correlation with trace gases at a rural site in Beijing:
top-down constraints from ambient measurements on bottom-up emissions, J.
Geophys. Res., 116, D24304, https://doi.org/10.1029/2011jd016575, 2011.
Wang, Y., Zhuang, G. S., Zhang, X. Y., Huang, K., Xu, C., Tang, A. H.,
Chen, J. M., and An, Z. S.: The ion chemistry, seasonal cycle, and sources of
PM2.5 and TSP aerosol in Shanghai, Atmos. Environ., 40, 2935–2952,
2006.
Wang, Y. Q., Stein, A. F., Draxler, R. R., de la Rosa, J. D., and Zhang, X. Y.:
Global sand and dust storms in 2008: Observation and HYSPLIT model
verification, Atmos. Environ., 45, 6368–6381, 2011.
Wang, Z., Li, J., Wang, X., Pochanart, P., and Akimoto, H.: Modeling of Regional
High Ozone Episode Observed at Two Mountain Sites (Mt. Tai and Huang) in East
China, J. Atmos. Chem., 55, 253–272, 2006.
Wang, Z., Li, Y., Chen, T., Zhang, D., Sun, F., and Pan, L.: Spatial-temporal
characteristics of PM2.5 in Beijing in 2013, Acta Geogr. Sin., 70,
110–120, 2015.
Weingartner, E., Saathoff, H., Schnaiter, M., Streit, N., Bitnar, B., and
Baltensperger, U.: Absorption of light by soot particles: determination of
the absorption coefficient by means of aethalometers, J. Aerosol Sci., 34,
1445–1463, https://doi.org/10.1016/S0021-8502(03)00359-8, 2003.
Wu, D., Liu, Q., Lian, Y., Bi, X., Li, F., Tan, H., Liao, B., and Chen, H.: Hazy
weather formation and visibility deterioration resulted from fine particulate
(PM2.5) pollutions in Guangdong and Hong Kong, J. Environ. Sci.
Circumst., 32, 2660–2669, 2012.
Wu, Y., Guo, J., Zhang, X., Tian, X., Zhang, J., Wang, Y., Duan, J., and Li,
X.: Synergy of satellite and ground based observations in estimation of
particulate matter in eastern China, Sci. Total Environ., 433, 20–30, 2012.
Xiao, Z., Bi, X., Feng, Y., Wang, Y., Zhou, J., Fu, X., and Weng,
Y.: Source apportionment of ambient PM10 and PM2.5 in urban area of
Ningbo City, Res. Environ. Sci., 5, 549–555, 2012.
Xiao, Z. M., Zhang, Y. F., Hong, S. M., Bi, X. H., Jiao, L., Feng, Y.
C., and Wang, Y. Q.: Estimation of the Main Factors Influencing Haze, Based
on a Long-term Monitoring Campaign in Hangzhou, China, Aerosol Air Qual.
Res., 11, 873–882, 2011.
Xie, M., Zhu, K. G., Wang, T. J., Chen, P. L., Han, Y., Li, S., Zhuang, B. L.,
and Shu, L.: Temporal characterization and regional contribution to
O3 and NOx at an urban and a suburban site in
Nanjing, China, Sci. Total Environ., 551–552, 533–545, 2016.
Xue, L., Wang, T., Louie, P. K. K., Luk, C. W. Y., Blake, D. R., and Xu, Z.:
Increasing external effects negate local efforts to control ozone air
pollution: a case study of Hong Kong and implications for other Chinese
cities, Environ. Sci. Technol., 48, 10769–10775, 2014.
Yan, S., Cao, H., Chen, Y., Wu, C., Hong, T., and Fan, H.: Spatial and temporal
characteristics of air quality and air pollutants in 2013 in Beijing,
Environ. Sci. Pollut. R., 23, 1–12, 2016.
Yang, S. J., He, H. P., Lu, S. L., Chen, D., and Zhu, J. X.: Quantification of
crop residue burning in the field and its influence on ambient air quality in
Suqian, China, Atmos. Environ., 42, 1961–1969, 2008.
Yi, R., Wang, Y. L., Zhang, Y. J., Shi, Y., and Li, M. S.: Pollution
characteristics and influence factors of ozone in Yangtze River Delta, Acta
Sci. Circumst., 35, 2370–2377, 2015 (in Chinese).
Yin, S., Wang, X. F., Xiao, Y., Tani, H., Zhong, G. S., and Sun, Z. Y.: Study on
spatial distribution of crop residue burning and PM2.5 change in China,
Environ. Pollut., 220, 204–221, 2016.
Yu, J., Wang, W., Zhou, J., Xu, D., Zhao, Q., and He, L.: Analysis of
pollution characteristics and sources of PM2.5 in winter of Ningbo City,
Environ. Sci. Technol., 8, 150–155, 2015.
Zhang, Q., Streets, D. G., Carmichael, G. R., He, K. B., Huo, H., Kannari,
A., Klimont, Z., Park, I. S., Reddy, S., Fu, J. S., Chen, D., Duan, L., Lei,
Y., Wang, L. T., and Yao, Z. L.: Asian emissions in 2006 for the NASA INTEX-B
mission, Atmos. Chem. Phys., 9, 5131–5153,
https://doi.org/10.5194/acp-9-5131-2009, 2009.
Zhang, Y. H., Hu, M., Zhong, L. J., Wiedensohler, A., Liu, S. C., Andreae,
M. O., Wang, W., and Fan, S. J.: Regional integrated experiments on air quality
over Pearl River Delta 2004 (PRIDE-PRD2004): overview, Atmos. Environ., 42,
6157–6173, 2008.
Zhang, X. Y., Wang, Y. Q., Zhang, X. C., Guo, W., and Gong, S. L.:
Carbonaceous aerosol composition over various regions of China during 2006,
J. Geophys. Res., 113, D14111, https://doi.org/10.1029/2007JD009525, 2008.
Zhang, X. Y., Wang, Y. Q., Niu, T., Zhang, X. C., Gong, S. L., Zhang, Y. M.,
and Sun, J. Y.: Atmospheric aerosol compositions in China: spatial/temporal
variability, chemical signature, regional haze distribution and comparisons
with global aerosols, Atmos. Chem. Phys., 12, 779–799,
https://doi.org/10.5194/acp-12-779-2012, 2012.
Zhang, Y., Shao, K., and Tang, X.: The study of urban photochemical smog
pollution in China, Acta Scientiarum Naturalium-Universitatis Pekinensis, 34,
392–400, 1998.
Zhang, Y. L. and Cao, F.: Fine particulate matter (PM2.5)
in China at a city
level, Sci. Rep.-UK, 5, 14884, 2015.
Zheng, J., Zhong, L., Wang, T., Louie, P. K. K., and Li, Z.: Ground-level
ozone in the Pearl River Delta region: analysis of data from a recently
established regional air quality monitoring network, Atmos. Environ., 44,
814–823, 2010.
Zhu, J., Wang, T., Talbot, R., Mao, H., Hall, C. B., Yang, X., Fu, C.,
Zhuang, B., Li, S., Han, Y., and Huang, X.: Characteristics of atmospheric
Total Gaseous Mercury (TGM) observed in urban Nanjing, China, Atmos. Chem.
Phys., 12, 12103–12118, https://doi.org/10.5194/acp-12-12103-2012, 2012.
Zhuang, B., Wang, T., Liu, J., Li, S., Xie, M., Han, Y., Chen, P., Hu, Q.,
Yang, X.-Q., Fu, C., and Zhu, J.: The surface aerosol optical properties in
the urban area of Nanjing, west Yangtze River Delta, China, Atmos. Chem.
Phys., 17, 1143–1160, https://doi.org/10.5194/acp-17-1143-2017, 2017.
Zhuang, B. L., Liu, L., Shen, F. H., Wang, T. J., and Han, Y.: Semidirect
radiative forcing of internal mixed black carbon cloud droplet and its
regional climatic effect over China, J. Geophys. Res., 115, D00K19,
https://doi.org/10.1029/2009JD013165, 2010.
Zhuang, B. L., Liu, Q., Wang, T. J., Yin, C. Q., Li, S., Xie, M., Jiang,
F., and Mao, H. T.: Investigation on semi-direct and indirect climate effects
of fossil fuel black carbon aerosol over China, Theor. Appl. Climatol., 114,
651–672, 2013a.
Zhuang, B. L., Li, S., Wang, T. J., Deng, J. J., Xie, M., Yin, C. Q., and
Zhu, J. L.: Direct radiative forcing and climate effects of anthropogenic
aerosols with different mixing states over China, Atmos. Environ., 79,
349–361, https://doi.org/10.1016/j.atmosenv.2013.07.004, 2013b.
Zhuang, B. L., Wang, T. J., Li, S., Liu, J., Talbot, R., Mao, H. T., Yang,
X. Q., Fu, C. B., Yin, C. Q., Zhu, J. L., Che, H. Z., and Zhang, X. Y.:
Optical properties and radiative forcing of urban aerosols in Nanjing,
China, Atmos. Environ., 83, 43–52, 2014a.
Zhuang, B. L., Wang, T. J., Liu, J., Li, S., Xie, M., Yang, X. Q., Fu, C.
B., Sun, J. N., Yin, C. Q., Liao, J. B., Zhu, J. L., and Zhang, Y.:
Continuous measurement of black carbon aerosol in urban Nanjing of Yangtze
River Delta, China, Atmos. Environ., 89, 415–424, 2014b.
Zhuang, B. L., Wang, T. J., Liu, J., Ma, Y., Yin, C. Q., Li, S., Xie, M.,
Han, Y., Zhu, J. L., Yang, X. Q., and Fu, C. B.: Absorption coefficient of
urban aerosol in Nanjing, west Yangtze River Delta, China, Atmos. Chem.
Phys., 15, 13633–13646, https://doi.org/10.5194/acp-15-13633-2015, 2015.
Zhuang, B. L., Li, S., Wang, T. J., Liu, J., Chen, H. M., Chen, P. L., Li, M.
M., and Xie, M.: Interaction between the Black Carbon Aerosol Warming Effect
and East Asian Monsoon Using RegCM4, J. Climate, 31, 9367–9388, 2018.
Short summary
To better understand the characteristics of air pollutants and their interactions in the highly polluted region of eastern China, continuous measurements of particles and trace gases were made during cold seasons in 2016. We found 48 days with excess of PM2.5, 14 with excess of PM10, and 40 with excess of O3. Results further reveal the formation of secondary aerosols under high-O3 and temperature conditions and suggest a VOC-sensitive regime for photochemical production of O3 in urban Nanjing.
To better understand the characteristics of air pollutants and their interactions in the highly...
Altmetrics
Final-revised paper
Preprint