Characteristics and meteorological mechanisms of transboundary air pollution in a persistent heavy PM2.5 pollution episode in Central-East China
文献类型：期刊论文
| 作者 | Shi, Chune3,4; Nduka, Ifeanyichukwu C.5; Yang, Yuanjian5,6,7; Huang, Yong3,4; Yao, Risheng1; Zhang, Hao3,4; He, Bingfang3,4; Xie, Chengbo2; Wang, Zhenzhu2 ; Yim, Steve Hung Lam5,6,8
|
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2020-02-15 |
| 卷号 | 223 |
| ISSN号 | 1352-2310 |
| 关键词 | Heavy PM2.5 pollution Large-scale subsidence Transboundary air pollution Central-east China |
| DOI | 10.1016/j.atmosenv.2019.117239 |
| 通讯作者 | Shi, Chune(shichune@sina.com) ; Yim, Steve Hung Lam(steveyim@cuhk.edu.hk) |
| 英文摘要 | Previous research has shown the significant transboundary air pollution (TAP) in China. Despite its adverse environmental and human health impacts, the characteristics and mechanisms of TAP have yet to be fully understood. This study comprehensively analyzed intensive ground and upper levels measurements along with the atmospheric modeling approach to determine the driving meteorological conditions responsible for the formation and evolution of a persistent severe PM2.5 pollution episode in Central-East China (CEC, 112 degrees E 118 degrees E, 30 degrees N -34 degrees N) starting from 18:00 on Dec. 3 to 18:00 on Dec. 5, 2017, which had obvious characteristics of TAP and explosive increases in PM2.5 concentration. We assessed and quantified contributions of local and nonlocal emissions to PM2.5 in the region and different cities during the episode and determined the altitude level at which TAP occurred. Results show that PM2.5 concentration in most cities in CEC region experienced two major increases: the first increase was due to the change in wind direction from south to north, transporting pollutants from north China to CEC; the second increase was driven by several important meteorological factors, including warm/cold advection at different altitudes, large-scale subsidence, and radiative cooling, jointly resulting in a deep (reaching around 800 m) and strong elevated temperature inversion with a significant reduction in mixing layer thickness and thus causing a rapid increase in PM2.5 concentration in CEC region. On average, TAP accounted for 42% of total PM2.5 concentration in the region during the event, in which the TAP impact varied by cities, ranging from similar to 26% to similar to 70%. Our findings demonstrate the synergetic effect of TAP and large-scale subsidence, providing a critical reference for air pollution forecast and assessment in the eastern China. |
| WOS关键词 | YANGTZE-RIVER DELTA ; NINO-SOUTHERN OSCILLATION ; ATMOSPHERIC CONDITIONS ; CONDITIONS CONDUCIVE ; POTENTIAL IMPACTS ; LOCAL EMISSIONS ; BOUNDARY-LAYER ; HONG-KONG ; QUALITY ; HAZE |
| 资助项目 | National Natural Science Foundation of China[41590871] ; National Natural Science Foundation of China[41875171] ; Key research and development projects in Anhui,China[1804a0802215] ; Natural Science Foundation of Anhui Province, China[1608085MD84] ; Natural Science Foundation of Zhejiang Province, China[LY16D050001] ; Chinese University of Hong Kong[4930744] ; Dr. Stanley Ho Medicine Development Foundation[8305509] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQG 1842] ; CUHK Central High Performance Computing Cluster |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000517660200009 |
| 资助机构 | National Natural Science Foundation of China ; Key research and development projects in Anhui,China ; Natural Science Foundation of Anhui Province, China ; Natural Science Foundation of Zhejiang Province, China ; Chinese University of Hong Kong ; Dr. Stanley Ho Medicine Development Foundation ; State Key Laboratory of Loess and Quaternary Geology ; CUHK Central High Performance Computing Cluster |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103765]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Shi, Chune; Yim, Steve Hung Lam |
| 作者单位 | 1.Zhejiang Inst Meteorol Sci, Hangzhou 310008, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Composit & Opt Radiat, POB 1125, Hefei 230031, Anhui, Peoples R China 3.Anhui Inst Meteorol Sci, Anhui Prov Key Lab Atmospher Sci & Satellite Remo, Hefei 230031, Peoples R China 4.CMA, Shouxian Natl Climatol Observ & Huai River Basin, Shouxian, Peoples R China 5.Chinese Univ Hong Kong, Dept Geog & Resource Management, Shatin, Hong Kong, Peoples R China 6.Chinese Univ Hong Kong, Inst Environm Energy & Susminabil, Shatin, Hong Kong, Peoples R China 7.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 8.Chinese Univ Hong Kong, Stanley Ho Big Data Decis Analyt Res Ctr, Shatin, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Chune,Nduka, Ifeanyichukwu C.,Yang, Yuanjian,et al. Characteristics and meteorological mechanisms of transboundary air pollution in a persistent heavy PM2.5 pollution episode in Central-East China[J]. ATMOSPHERIC ENVIRONMENT,2020,223. |
| APA | Shi, Chune.,Nduka, Ifeanyichukwu C..,Yang, Yuanjian.,Huang, Yong.,Yao, Risheng.,...&Yim, Steve Hung Lam.(2020).Characteristics and meteorological mechanisms of transboundary air pollution in a persistent heavy PM2.5 pollution episode in Central-East China.ATMOSPHERIC ENVIRONMENT,223. |
| MLA | Shi, Chune,et al."Characteristics and meteorological mechanisms of transboundary air pollution in a persistent heavy PM2.5 pollution episode in Central-East China".ATMOSPHERIC ENVIRONMENT 223(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。