Articles | Volume 21, issue 10
https://doi.org/10.5194/acp-21-7723-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-7723-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 May 2021
Research article |
| 20 May 2021
| 20 May 2021
Variability of NO2 concentrations over China and effect on air quality derived from satellite and ground-based observations
Cheng Fan
State Environment Protection Key Laboratory of Satellite Remote
Sensing, Aerospace Information Research Institute, Chinese Academy of
Sciences, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China
Zhengqiang Li
State Environment Protection Key Laboratory of Satellite Remote
Sensing, Aerospace Information Research Institute, Chinese Academy of
Sciences, Beijing 100101, China
Ying Li
CORRESPONDING AUTHOR
China Academy of Culture and Tourism, Beijing International Studies
University, Beijing 100024, China
Jiantao Dong
School of Surveying and Land Information Engineering, Henan
Polytechnic University, Jiao Zuo, China
Ronald van der A
Royal Netherlands Meteorological Institute (KNMI), R&D Satellite
Observations, 3731GA De Bilt, the Netherlands
Nanjing University of Information Science and Technology (NUIST),
School of Atmospheric Physics, No. 219, Ningliu Road, Nanjing, Jiangsu, China
Gerrit de Leeuw
State Environment Protection Key Laboratory of Satellite Remote
Sensing, Aerospace Information Research Institute, Chinese Academy of
Sciences, Beijing 100101, China
Royal Netherlands Meteorological Institute (KNMI), R&D Satellite
Observations, 3731GA De Bilt, the Netherlands
Nanjing University of Information Science and Technology (NUIST),
School of Atmospheric Physics, No. 219, Ningliu Road, Nanjing, Jiangsu, China
China University of Mining and Technology (CUMT), School of Environment
Science and Spatial Informatics, Xuzhou, Jiangsu 221116, China
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Latest update: 08 May 2025
Short summary
Emission control policy in China has resulted in the decrease of nitrogen dioxide concentrations, which however leveled off and stabilized in recent years, as shown from satellite data. The effects of the further emission reduction during the COVID-19 lockdown in 2020 resulted in an initial improvement of air quality, which, however, was offset by chemical and meteorological effects. The study shows the regional dependence over east China, and results have a wider application than China only.
Emission control policy in China has resulted in the decrease of nitrogen dioxide...
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