气候变化领域集成服务门户(CCPortal): Role of the South China Sea in Southern China rainfall: meridional moisture flux transport

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DOI	10.1007/s00382-020-05603-w
	Role of the South China Sea in Southern China rainfall: meridional moisture flux transport
	Li X.; Wang C.; Lan J.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-07-08
英文摘要	The South China Sea (SCS) serves as the main source of moisture for rainfall in Southern China (SC) and the meridional moisture transport to SC is dominated by wind changes during the first rainy season (April–June). El Niño-Southern Oscillation (ENSO) and Tropical Northwestern Pacific (TNWP) variability modulate the SC rainfall through anomalous anticyclonic circulation over the western North Pacific by strengthening the SCS meridional moisture transport to SC. However, our study indicates that the SCS is not only the intermediary in which ENSO or the TNWP affects the SC rainfall but also plays an independent role in the modulation of the SC rainfall. Notably, the SCS meridional moisture transport has a lower impact on the SC rainfall during the second rainy season (July–September), especially in July. At that time, the main cause of the SC rainfall is the southward moisture flux anomaly across its northern boundary with the anomalous cyclone over SC. This cyclone suppresses the moisture flux out of SC and leads to moisture convergence in SC. Moreover, we present a new concept by analyzing internal differences of moisture circulation during the second rainy season. Either strengthening the meridional moisture flux into SC across its southern boundary or suppressing the moisture flux out of SC across its northern boundary is important depending on whether or not the moisture from the SCS can converge in SC, which is mainly determined by the amplitude of moisture transport fluxes in SC. © 2021, The Author(s).
英文关键词	Meridional moisture flux; Rainy season; South China Sea; Southern china rainfall
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/183323
作者单位	College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, China; Physical Oceanography Laboratory/Institute for Advanced Ocean Study, Ocean University of China, Qingdao, China; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, China; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
推荐引用方式 GB/T 7714	Li X.,Wang C.,Lan J.. Role of the South China Sea in Southern China rainfall: meridional moisture flux transport[J],2021,56(2021-07-08).
APA	Li X.,Wang C.,&Lan J..(2021).Role of the South China Sea in Southern China rainfall: meridional moisture flux transport.Climate Dynamics,56(2021-07-08).
MLA	Li X.,et al."Role of the South China Sea in Southern China rainfall: meridional moisture flux transport".Climate Dynamics 56.2021-07-08(2021).