Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation
<p>Regional PM<span class="inline-formula"><sub>2.5</sub></span> transport is an important cause of atmospheric environment change. However, the variations in regional PM<span class="inline-formula"><sub>2.5</sub></span> trans...
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Copernicus Publications
2025-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/25/1273/2025/acp-25-1273-2025.pdf |
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| author | Y. Bai T. Zhao K. Meng Y. Zhou J. Xiong X. Sun L. Shen Y. Yue Y. Zhu W. Hu J. Yao |
| author_facet | Y. Bai T. Zhao K. Meng Y. Zhou J. Xiong X. Sun L. Shen Y. Yue Y. Zhu W. Hu J. Yao |
| author_sort | Y. Bai |
| collection | DOAJ |
| description | <p>Regional PM<span class="inline-formula"><sub>2.5</sub></span> transport is an important cause of atmospheric environment change. However, the variations in regional PM<span class="inline-formula"><sub>2.5</sub></span> transport on a synoptic scale with meteorological drivers have been incomprehensively understood. Therefore, this study is targeted at the quasi-weekly oscillation (QWO) of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport over central and eastern China (CEC) with the influence of synoptic-scale disturbance of the East Asian winter monsoon (EAWM) circulation. By constructing the data of daily PM<span class="inline-formula"><sub>2.5</sub></span> transport flux in CEC in the winters of 2015–2019, we utilize the extended empirical orthogonal function (EEOF) decomposition and other statistical methods to extract the moving spatial distribution of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport over CEC, recognizing the QWO in regional PM<span class="inline-formula"><sub>2.5</sub></span> transport with the spatial–temporal variations over CEC. The source–receptor relationship in regional transport of PM<span class="inline-formula"><sub>2.5</sub></span> is identified with the 2 d lag effect of the North China Plain, as the upwind source region, on the PM<span class="inline-formula"><sub>2.5</sub></span> pollution change in the Twain-Hu Basin, as the downwind receptor region in central China. The QWO of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport over CEC is regulated by the synoptic-scale disturbance of the EAWM circulation with the periodic activities of the Siberian high. These findings provide new insights into the understanding of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport with the source–receptor relationship and the meteorological mechanism in atmospheric environment change.</p> |
| format | Article |
| id | doaj-art-7b5ee3ea0d6549b581c289798d552e84 |
| institution | Kabale University |
| issn | 1680-7316 1680-7324 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Copernicus Publications |
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| series | Atmospheric Chemistry and Physics |
| spelling | doaj-art-7b5ee3ea0d6549b581c289798d552e842025-01-29T11:42:15ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242025-01-01251273128710.5194/acp-25-1273-2025Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulationY. Bai0T. Zhao1K. Meng2Y. Zhou3J. Xiong4X. Sun5L. Shen6Y. Yue7Y. Zhu8W. Hu9J. Yao10China Meteorological Administration Basin Heavy Rainfall Key Laboratory, Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, ChinaClimate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaKey Laboratory of Meteorology and Ecological Environment of Hebei Province, Hebei Provincial Institute of Meteorological Sciences, Shijiazhuang 050021, ChinaChina Meteorological Administration Basin Heavy Rainfall Key Laboratory, Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, ChinaChina Meteorological Administration Basin Heavy Rainfall Key Laboratory, Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, ChinaAnhui Province Key Laboratory of Atmospheric Science and Satellite Remote Sensing, Anhui Institute of Meteorological Sciences, Hefei 230031, ChinaSchool of Atmosphere and Remote Sensing, Wuxi University, Wuxi 214105, ChinaChina Meteorological Administration Basin Heavy Rainfall Key Laboratory, Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, ChinaChina Meteorological Administration Basin Heavy Rainfall Key Laboratory, Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, ChinaState Key Laboratory of Pollution Control and Resource Reuse and School of the Environment, Nanjing University, Nanjing 210023, ChinaClimate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044, China<p>Regional PM<span class="inline-formula"><sub>2.5</sub></span> transport is an important cause of atmospheric environment change. However, the variations in regional PM<span class="inline-formula"><sub>2.5</sub></span> transport on a synoptic scale with meteorological drivers have been incomprehensively understood. Therefore, this study is targeted at the quasi-weekly oscillation (QWO) of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport over central and eastern China (CEC) with the influence of synoptic-scale disturbance of the East Asian winter monsoon (EAWM) circulation. By constructing the data of daily PM<span class="inline-formula"><sub>2.5</sub></span> transport flux in CEC in the winters of 2015–2019, we utilize the extended empirical orthogonal function (EEOF) decomposition and other statistical methods to extract the moving spatial distribution of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport over CEC, recognizing the QWO in regional PM<span class="inline-formula"><sub>2.5</sub></span> transport with the spatial–temporal variations over CEC. The source–receptor relationship in regional transport of PM<span class="inline-formula"><sub>2.5</sub></span> is identified with the 2 d lag effect of the North China Plain, as the upwind source region, on the PM<span class="inline-formula"><sub>2.5</sub></span> pollution change in the Twain-Hu Basin, as the downwind receptor region in central China. The QWO of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport over CEC is regulated by the synoptic-scale disturbance of the EAWM circulation with the periodic activities of the Siberian high. These findings provide new insights into the understanding of regional PM<span class="inline-formula"><sub>2.5</sub></span> transport with the source–receptor relationship and the meteorological mechanism in atmospheric environment change.</p>https://acp.copernicus.org/articles/25/1273/2025/acp-25-1273-2025.pdf |
| spellingShingle | Y. Bai T. Zhao K. Meng Y. Zhou J. Xiong X. Sun L. Shen Y. Yue Y. Zhu W. Hu J. Yao Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation Atmospheric Chemistry and Physics |
| title | Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation |
| title_full | Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation |
| title_fullStr | Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation |
| title_full_unstemmed | Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation |
| title_short | Quasi-weekly oscillation of regional PM<sub>2.5</sub> transport over China driven by the synoptic-scale disturbance of the East Asian winter monsoon circulation |
| title_sort | quasi weekly oscillation of regional pm sub 2 5 sub transport over china driven by the synoptic scale disturbance of the east asian winter monsoon circulation |
| url | https://acp.copernicus.org/articles/25/1273/2025/acp-25-1273-2025.pdf |
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