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Yang Q, Zhao T, Bai Y, Wei J, Sun X, Tian Z, Hu J, Ma X, Luo Y, Fu W, Yang K. Interannual variations in ozone pollution with a dipole structure over Eastern China associated with springtime thermal forcing over the Tibetan Plateau. Sci Total Environ 2024; 923:171527. [PMID: 38453079 DOI: 10.1016/j.scitotenv.2024.171527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
The Tibetan Plateau (TP) is essential in modulating climate change in downstream Eastern China (EC). As a meteorology-sensitive pollutant, changes in ozone (O3) in connection with the TP have received limited attention. In this study, using climate analysis of the China High Air Pollutants O3 product and ERA5 reanalysis data of meteorology for 1980-2020, the effect of springtime TP thermal forcing on the warm season (April-September) O3 pollution over EC was investigated. The strong TP thermal effect significantly modulates the interannual variations in O3 pollution with a dipole pattern over EC, inducing more O3 pollution in northern EC regions and alleviating O3 pollution in the southern regions. In northern (southern) EC, strong TP thermal forcing triggers a significant anomalous high (low) pressure center accompanied by anticyclonic (cyclonic) anomalies, resulting in decreased (increased) total cloud cover, increased (reduced) surface downward solar radiation and air temperature, which are conducive to the anomalous increase (decrease) in surface O3 concentrations. Moreover, the key sources of springtime thermal forcing over the TP influence the major O3 pollution regions over southern and northern EC with an inverse pattern, depending on their locations and orientations to the large topography of the TP. This research reveals an important driving factor for the dipole interannual variation in O3 pollution over EC, providing a new prospect for the effect of the TP on atmospheric environmental change.
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Affiliation(s)
- Qingjian Yang
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China
| | - Tianliang Zhao
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China.
| | - Yongqing Bai
- Institute of Heavy Rain, China Meteorological Administration, Wuhan 430205, China
| | - Jing Wei
- Department of Atmospheric and Oceanic Science and ESSIC, University of Maryland, College Park, MD, USA
| | - Xiaoyun Sun
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China
| | - Zhijie Tian
- China Institute for Radiation Protection, Taiyuan 030006, China
| | - Jun Hu
- Fujian Academy of Environmental Sciences, Fuzhou 350011, China
| | - Xiaodan Ma
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China
| | - Yuehan Luo
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China
| | - Weikang Fu
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China
| | - Kai Yang
- Climate and Weather Disasters Collaborative Innovation Center, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, PREMIC, Nanjing University of Information Science &Technology, Nanjing 210044, China
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