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DOI: 10.1002/joc.5842
Scopus ID: 2-s2.0-85053448099
Title:
Inter-annual variation of the spring haze pollution over the North China Plain: Roles of atmospheric circulation and sea surface temperature
Author: Chen S.; Guo J.; Song L.; Li J.; Liu L.; Cohen J.B.
Source Publication: International Journal of Climatology
ISSN: 8998418
Indexed By: SCI ; SCI-E ; EI
Publishing Year: 2019
Volume: 39, Issue:2
pages begin: 783
pages end: 798
Language: 英语
Keyword: haze pollution ; North Atlantic Oscillation ; North China Plain ; sea surface temperature ; spring
Scopus Keyword: Air quality ; Atmospheric humidity ; Atmospheric pressure ; Atmospheric temperature ; Springs (components) ; Submarine geophysics ; Surface properties ; Surface waters ; Tropics ; Wind ; Atmospheric circulation ; Extinction coefficients ; Haze pollutions ; Meteorological condition ; North Atlantic oscillations ; North China Plain ; Sea surface temperature (SST) ; Sea surface temperature anomalies ; Oceanography ; air quality ; annual variation ; anticyclone ; atmospheric dynamics ; atmospheric pollution ; atmospheric transport ; haze ; North Atlantic Oscillation ; pollutant transport ; sea surface temperature ; spring (season) ; Atlantic Ocean ; Atlantic Ocean (North) ; Atlantic Ocean (Northeast) ; China ; North China Plain
English Abstract: Haze pollution is a serious air quality issue in China. Previous studies over the North China Plain (NCP) mainly focused on analysing the haze during boreal winter. However, the variation in haze during spring and the related factors remain unclear. This study investigates inter-annual variation of the spring haze, which is represented by the humidity-corrected dry extinction coefficient (DEC) over the NCP. During high DEC years, pronounced positive DEC anomalies appear over the NCP and its surrounding regions. Correspondingly, a notable anticyclonic anomaly is observed over Northeast Asia, inducing significant southeasterly wind anomalies over the NCP. The anomalous southeasterly winds reduce wind speed and increase relative humidity, which provides favourable meteorological conditions for accumulation and growth of aerosol pollutants. Further analysis shows that the North Atlantic Oscillation (NAO) contributes to the formation of anticyclonic anomalies over Northeast Asia via downstream propagating atmospheric wave trains. Additionally, positive sea surface temperature (SST) anomalies over the subtropical northeastern Atlantic Ocean may also impact the DEC variation. The linear barotropic model experiment further confirms the important role of subtropical northeastern Atlantic SST anomalies in contributing to the anomalous anticyclone over Northeast Asia and southerly wind anomalies over the NCP region, which are triggered via eastwards propagating atmospheric wave trains. This study gives support to the idea that the NAO and the North Atlantic SST may be potential predictors for the frequently observed springtime NCP haze variation. © 2018 Royal Meteorological Society
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Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/116579
Appears in Collections:全球变化的国际研究计划

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Affiliation: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China

Recommended Citation:
Chen S.,Guo J.,Song L.,et al. Inter-annual variation of the spring haze pollution over the North China Plain: Roles of atmospheric circulation and sea surface temperature[J]. International Journal of Climatology,2019-01-01,39(2)
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