气候变化领域集成服务门户(CCPortal): Interdecadal variation of the wintertime precipitation in Southeast Asia and its possible causes

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DOI	10.1175/JCLI-D-20-0480.1
	Interdecadal variation of the wintertime precipitation in Southeast Asia and its possible causes
	Dong Z.; Wang L.; Xu P.; Pimonsree S.; Limsakul A.; Singhruck P.
发表日期	2021
ISSN	08948755
起始页码	3503
结束页码	3521
卷号	34 期号:9
英文摘要	Based on several observational and reanalysis datasets for the winters 1901-2017, this study investigates the interdecadal (ID) variation of the Southeast Asian rainfall (SEAR) and its potential drivers. The dominant mode of the wintertime SEAR on the ID time scale features enhanced precipitation over the eastern Maritime Continent and the Philippines and a slight decrease of precipitation over the western Maritime Continent, or the opposite sign. The ID SEAR variability peaks at the 8-16-yr period and explains more than 20% of the total variance regardless of the datasets and period considered, highlighting the importance of the ID variability of the SEAR. The atmospheric circulation that facilitates abundant ID SEAR is characterized by enhanced lower-tropospheric wind convergence and cyclonic anomalies over the South China Sea and the Philippines. On the one hand, this wind convergence is attributed to the enhanced Walker circulation induced by the negative phase of the interdecadal Pacific oscillation (IPO). On the other hand, it is attributed to the enhanced northerly anomalies along the coast of East Asia induced by a strong East Asian winter monsoon (EAWM) and reduced autumn Arctic sea ice in the Barents-Kara Seas. These mechanisms are further confirmed by model experiments from phase 5 of the Coupled Model Intercomparison Project (CMIP5). The effects of the IPO, EAWM, and Arctic sea ice on the SEAR are mostly independent. They together explain approximately 70% of the SEAR variance on the ID time scale. © 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Climate variability; Interdecadal variability; Monsoons; Sea ice; Sea surface temperature
语种	英语
scopus关键词	Climate models; Climatology; Atmospheric circulation; Coupled Model Intercomparison Project; East Asian winter monsoon; Inter-decadal pacific oscillations; Inter-decadal variations; Time-scale features; Tropospheric winds; Walker circulation; Sea ice
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/178608
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; Atmospheric Pollution and Climate Change Research Unit, School of Energy and Environment, University of Phayao, Phayao, Thailand; Environmental Research and Training Center, Technopolis, Pathumthani, Thailand; Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
推荐引用方式 GB/T 7714	Dong Z.,Wang L.,Xu P.,et al. Interdecadal variation of the wintertime precipitation in Southeast Asia and its possible causes[J],2021,34(9).
APA	Dong Z.,Wang L.,Xu P.,Pimonsree S.,Limsakul A.,&Singhruck P..(2021).Interdecadal variation of the wintertime precipitation in Southeast Asia and its possible causes.Journal of Climate,34(9).
MLA	Dong Z.,et al."Interdecadal variation of the wintertime precipitation in Southeast Asia and its possible causes".Journal of Climate 34.9(2021).