Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-3173-2018 |
Increasing persistent haze in Beijing: potential impacts of weakening East Asian winter monsoons associated with northwestern Pacific sea surface temperature trends | |
Pei, Lin1; Yan, Zhongwei2; Sun, Zhaobin1; Miao, Shiguang1; Yao, Yao2 | |
2018-03-06 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:5页码:3173-3183 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Over the past decades, Beijing, the capital city of China, has encountered increasingly frequent persistent haze events (PHE). While the increased pollutant emissions are considered as the most important reason, changes in regional atmospheric circulations associated with large-scale climate warming also play a role. In this study, we find a significant positive trend of PHE in Beijing for the winters from 1980 to 2016 based on updated daily observations. This trend is closely related to an increasing frequency of extreme anomalous southerly episodes in North China, a weakened East Asian trough in the mid-troposphere and a northward shift of the East Asian jet stream in the upper troposphere. These conditions together depict a weakened East Asian winter monsoon (EAWM) system, which is then found to be associated with an anomalous warm, high-pressure system in the middle-lower troposphere over the northwestern Pacific. A practical EAWM index is defined as the seasonal meridional wind anomaly at 850 hPa in winter over North China. Over the period 1900-2016, this EAWM index is positively correlated with the sea surface temperature anomalies over the northwestern Pacific, which indicates a wavy positive trend, with an enhanced positive phase since the mid-1980s. Our results suggest an observation-based mechanism linking the increase in PHE in Beijing with large-scale climatic warming through changes in the typical regional atmospheric circulation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426906400001 |
WOS关键词 | EMPIRICAL MODE DECOMPOSITION ; NONSTATIONARY TIME-SERIES ; ATMOSPHERIC CIRCULATIONS ; SOURCE APPORTIONMENT ; REANALYSIS PROJECT ; ECONOMIC-LOSSES ; AIR-POLLUTION ; JANUARY 2013 ; CHINA ; HEALTH |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20586 |
专题 | 地球科学 |
作者单位 | 1.China Meteorol Adm, Inst Urban Meteorol, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Inst Atmospher Phys, RCE TEA, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Pei, Lin,Yan, Zhongwei,Sun, Zhaobin,et al. Increasing persistent haze in Beijing: potential impacts of weakening East Asian winter monsoons associated with northwestern Pacific sea surface temperature trends[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(5):3173-3183. |
APA | Pei, Lin,Yan, Zhongwei,Sun, Zhaobin,Miao, Shiguang,&Yao, Yao.(2018).Increasing persistent haze in Beijing: potential impacts of weakening East Asian winter monsoons associated with northwestern Pacific sea surface temperature trends.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(5),3173-3183. |
MLA | Pei, Lin,et al."Increasing persistent haze in Beijing: potential impacts of weakening East Asian winter monsoons associated with northwestern Pacific sea surface temperature trends".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.5(2018):3173-3183. |
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