气候变化领域集成服务门户(CCPortal): Potential impacts of Arctic warming on Northern Hemisphere mid-latitude aerosol optical depth

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DOI	10.1007/s00382-019-04706-3
	Potential impacts of Arctic warming on Northern Hemisphere mid-latitude aerosol optical depth
	Chen Y.; Zhao C.; Ming Y.
发表日期	2019
ISSN	0930-7575
起始页码	1637
结束页码	1651
卷号	53 期号:2020-03-04
英文摘要	The weather and climate conditions can provide favorable or unfavorable atmospheric background for the maintenance and development of haze events. This study investigates the potential impacts of Arctic warming on the variation of Northern Hemisphere mid-latitude aerosol optical depth (AOD) in winter when haze often occurs. We first analyze the spatio-temporal variability of wintertime AOD in mid-latitudes of Northern Hemisphere from NASA MERRA-2 for the period of 1980–2016 using the empirical orthogonal function analysis and morlet wavelet analysis. It showes increasing trend for AOD in East China and North India and decreasing trend for AOD in Europe and North America during last 37 years while inter-decadal fluctuations exist. In addition to the temporal trends of AOD, two long-term periodic variations with periods of about 7 and 11 years exist, which implies the potential impacts from natural variabilities. Further analysis shows high correlations between the mid-latitude winter AOD (WA) and Arctic summer (May and June) surface temperature (T56). Moreover, the Arctic summer surface temperature demonstrates similar periodic variations with periods of about 7–9 and 11–13 years. Both of these indicate the potential impacts of Arctic summer warming on mid-latitude winter pollution. We then analyze the temporal correlations between Arctic summer temperature and mid-latitude winter AOD in different regions. Arctic T56 correlates negatively with WA in Europe and North America, and positively with that in East Asia, North India and Middle East. Particularly, T56 in western sea of Novaya Zemlya has the most prominent correlation with the WA in mid-latitudes of East Asia, especially in East China. This implies that Arctic T56 in the Arctic circle of Europe could be used for rough estimates of winter AOD in East Asia. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Aerosol optical depth; Arctic; Mid-latitude; Near surface air temperature; Spatio-temporal variability; Teleconnection
语种	英语
scopus关键词	aerosol; arctic environment; global warming; haze; optical depth; spatial variation; surface temperature; teleconnection; temporal variation; winter; Arkhangelsk [Russian Federation]; China; India; Novaya Zemlya; Russian Federation
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146138
作者单位	State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; Atmospheric Physics and Climate Group, Princeton University, Princeton, NJ 08542, United States
推荐引用方式 GB/T 7714	Chen Y.,Zhao C.,Ming Y.. Potential impacts of Arctic warming on Northern Hemisphere mid-latitude aerosol optical depth[J],2019,53(2020-03-04).
APA	Chen Y.,Zhao C.,&Ming Y..(2019).Potential impacts of Arctic warming on Northern Hemisphere mid-latitude aerosol optical depth.Climate Dynamics,53(2020-03-04).
MLA	Chen Y.,et al."Potential impacts of Arctic warming on Northern Hemisphere mid-latitude aerosol optical depth".Climate Dynamics 53.2020-03-04(2019).