气候变化领域集成服务门户(CCPortal): Three dominant synoptic atmospheric circulation patterns influencing severe winter haze in eastern China

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DOI	10.5194/acp-22-16017-2022
	Three dominant synoptic atmospheric circulation patterns influencing severe winter haze in eastern China
	Zhang, Shiyue; Zeng, Gang; Wang, Tijian; Yang, Xiaoye; Iyakaremye, Vedaste
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	16017
结束页码	16030
卷号	22 期号:24 页码:14
英文摘要	Previous studies have indicated that, on a synoptic scale, severe haze in eastern China (EC) is affected by atmospheric circulation variations. However, it is still unclear what the dominant atmospheric circulation patterns influencing the severe winter haze conditions in EC and the differences between them are. To systematically determine the dominant synoptic atmospheric circulation patterns of severe haze in different regions of EC, we use the hierarchical clustering algorithm (HCA) to classify the local geopotential height anomalies at 500 hPa over stations with severe haze and obtained three dominant synoptic atmospheric circulation types based on observed particulate matter with an aerodynamic diameter less than 2.5 mu m (PM2.5) concentrations and NCEP/NCAR reanalysis. Circulation Type1 is accompanied by significant northerly wind component anomalies over northern China and causes severe haze pollution over the Yangtze River valley. Although the local meteorological conditions are not conducive to haze formation and accumulation, the severe haze in the Yangtze River valley is related to the pollution transportation caused by the northerly wind anomalies. During the haze days with circulation Type2, the joint affection of the East Atlantic/West Russia teleconnection pattern and winter East Asia subtropical jet stimulate and maintain the anticyclonic anomalies over northeast Asia, which provides meteorological conditions conducive to the occurrence of severe haze over the whole EC. Circulation Type3 mainly caused severe haze events in northeast China through the establishment of blocking high over the Sea of Okhotsk. The results provide a basis for establishing haze prediction and management policies applicable to different regions in EC.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000901766800001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273355
作者单位	Nanjing University of Information Science & Technology; Nanjing University
推荐引用方式 GB/T 7714	Zhang, Shiyue,Zeng, Gang,Wang, Tijian,et al. Three dominant synoptic atmospheric circulation patterns influencing severe winter haze in eastern China[J],2022,22(24):14.
APA	Zhang, Shiyue,Zeng, Gang,Wang, Tijian,Yang, Xiaoye,&Iyakaremye, Vedaste.(2022).Three dominant synoptic atmospheric circulation patterns influencing severe winter haze in eastern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(24),14.
MLA	Zhang, Shiyue,et al."Three dominant synoptic atmospheric circulation patterns influencing severe winter haze in eastern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.24(2022):14.