气候变化领域集成服务门户(CCPortal): What Leads to Persisting Surface Air Temperature Anomalies from Winter to following Spring over Mid-To High-Latitude Eurasia?

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DOI	10.1175/JCLI-D-19-0819.1
	What Leads to Persisting Surface Air Temperature Anomalies from Winter to following Spring over Mid-To High-Latitude Eurasia?
	Wu R.; Chen S.
发表日期	2020
ISSN	0894-8755
起始页码	5861
结束页码	5883
卷号	33 期号:14
英文摘要	Surface air temperature (SAT) anomalies tend to persist from winter to the following spring over the mid-To high latitudes of Eurasia. The present study compares two distinct cases of Eurasian SAT anomaly evolution and investigates the reasons for the persistence of continental-scale mid-To high-latitude Eurasian SAT anomalies from winter to following spring (termed persistent cases). The persisting SAT anomalies are closely associated with the sustenance of large-scale atmospheric circulation anomaly pattern over the North Atlantic and Eurasia, featuring a combination of the North Atlantic Oscillation/Arctic Oscillation (NAO/AO) and the Scandinavian pattern, fromwinter to spring. The combined circulation anomalies result inSATwarming overmost ofmid-To high-latitude Eurasia via anomalous wind-induced temperature advection. The sustenance of atmospheric circulation anomaly pattern is related to themaintenance of the NorthAtlantic triple sea surface temperature (SST) anomaly pattern due to air-sea interaction processes. The Barents Sea ice anomalies, which form in winter and increase in spring, also partly contribute to the sustenance of atmospheric circulation anomalies via modulating thermal state of the lower troposphere. In the cases that notable SAT warming (cooling) inwinter is replaced by pronounced SAT cooling (warming) in the subsequent spring-Termed reverse cases-The North Atlantic SST anomalies become small and the Greenland Sea ice change is a response to atmospheric change in spring. Without the support of lower boundary forcing, the atmospheric circulation anomaly pattern experiences a reverse in the spatial distribution from winter to spring likely due to internal atmospheric processes. © 2020 American Meteorological Society. All rights reserved.
英文关键词	Atmospheric pressure; Climatology; Oceanography; Sea ice; Surface waters; Air-sea interaction process; Atmospheric changes; Atmospheric circulation anomaly; Circulation anomalies; Induced temperature; North Atlantic oscillations; Sea surface temperature anomalies; Surface air temperatures; Atmospheric temperature; air temperature; atmospheric circulation; atmospheric forcing; North Atlantic Oscillation; seasonal variation; surface temperature; temperature anomaly; Eurasia
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171216
作者单位	School of Earth Sciences, Zhejiang University, Hangzhou, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Wu R.,Chen S.. What Leads to Persisting Surface Air Temperature Anomalies from Winter to following Spring over Mid-To High-Latitude Eurasia?[J],2020,33(14).
APA	Wu R.,&Chen S..(2020).What Leads to Persisting Surface Air Temperature Anomalies from Winter to following Spring over Mid-To High-Latitude Eurasia?.Journal of Climate,33(14).
MLA	Wu R.,et al."What Leads to Persisting Surface Air Temperature Anomalies from Winter to following Spring over Mid-To High-Latitude Eurasia?".Journal of Climate 33.14(2020).