气候变化领域集成服务门户(CCPortal): Roles of tropical remote forcings on the South China sea winter atmospheric and cold tongue variabilities

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DOI	10.1175/JCLI-D-20-0657.1
	Roles of tropical remote forcings on the South China sea winter atmospheric and cold tongue variabilities
	Ce Seow M.X.; Morioka Y.; Tozuka T.
发表日期	2021
ISSN	08948755
起始页码	4103
结束页码	4118
卷号	34 期号:10
英文摘要	Influences from the tropical Pacific and Indian Oceans and atmospheric internal variability on the South China Sea (SCS) atmospheric circulation and cold tongue (CT) variabilities in boreal winter and the relative roles of remote forcings at interannual time scales are studied using observational data, reanalysis products, and coupled model experiments. In the observation, strong CT years are accompanied by local cyclonic wind anomalies, which are an equatorial Rossby wave response to enhanced convection over the warmer-than-normal western equatorial Pacific associated with La Niña. Also, the cyclonic wind anomalies are an atmospheric Kelvin wave response to diabatic cooling anomalies linked to both the decaying late fall negative Indian Ocean dipole (IOD) and winter atmospheric internal variability. Partially coupled experiments reveal that both the tropical Pacific air–sea coupling and atmospheric internal variability positively contribute to the coupled variability of the SCS CT, while the air–sea coupling over the tropical Indian Ocean weakens such variabilities. The northwest Pacific anticyclonic wind anomalies that usually precede El Niño–Southern Oscillation–independent negative IOD generated under the tropical Indian Ocean air–sea coupling undermine such variabilities. © 2021 American Meteorological Society.
英文关键词	Air-sea interaction; Coupled models; Kelvin waves; Maritime Continent; Tropical variability; Tropics
语种	英语
scopus关键词	Atmospheric pressure; Mechanical waves; Oceanography; Atmospheric circulation; Enhanced convection; Equatorial Rossby waves; Indian ocean dipoles; Interannual time scale; Internal variability; Southern oscillation; Tropical Indian ocean; Tropics
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/178572
作者单位	Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, Japan; Application Laboratory, Research Institute for Value-Added-Information Generation, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan
推荐引用方式 GB/T 7714	Ce Seow M.X.,Morioka Y.,Tozuka T.. Roles of tropical remote forcings on the South China sea winter atmospheric and cold tongue variabilities[J],2021,34(10).
APA	Ce Seow M.X.,Morioka Y.,&Tozuka T..(2021).Roles of tropical remote forcings on the South China sea winter atmospheric and cold tongue variabilities.Journal of Climate,34(10).
MLA	Ce Seow M.X.,et al."Roles of tropical remote forcings on the South China sea winter atmospheric and cold tongue variabilities".Journal of Climate 34.10(2021).