气候变化领域集成服务门户(CCPortal): Suppression of winter heavy precipitation in Southeastern China by the Kuroshio warm current

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DOI	10.1007/s00382-019-04873-3
	Suppression of winter heavy precipitation in Southeastern China by the Kuroshio warm current
	Xu G.; Chang P.; Ma X.; Li M.
发表日期	2019
ISSN	0930-7575
起始页码	2437
结束页码	2450
卷号	53 期号:2020-03-04
英文摘要	The possible effects of the Kuroshio current and associated sea surface temperature (SST) fronts on Southeastern China winter precipitation are examined using twin simulations of a regional atmospheric model. When the SST frontal features in the forcing data are artificially weakened, the simulated rainfall over Southeastern China, particularly heavy rainfall, is found to increase by a statistically significant amount, compared to the simulations with the observed SST fronts. This difference is attributed to an anomalous regional overturning circulation that interferes with the onshore moisture transport. With the presence of stronger frontal SSTs, an anomalous ascending motion is anchored along the warm current, with a descending branch to its western side, forming a circulation cell that strides across the coasts of Southern China. In days of heavy rainfall over the Southeastern China, the regional atmospheric circulation tunnels oceanic moisture onto land across the coasts, serving as the primary water vapor source for the precipitation. This process is weakened by the anomalous regional overturning circulation in that the imbalance between low-level offshore and upper-level onshore flux drains the land of moisture, and the up-lifted moisture import aloft creates unfavorable condition for land precipitation. © 2019, The Author(s).
英文关键词	Kuroshio current; Precipitation; SST front
语种	英语
scopus关键词	atmospheric moisture; front; moisture transfer; precipitation assessment; rainfall; sea surface temperature; winter; China; Kuroshio Current; Pacific Ocean
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/146090
作者单位	Key Laboratory of Physical Oceanography, Institute for Advanced Ocean Studies, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
推荐引用方式 GB/T 7714	Xu G.,Chang P.,Ma X.,et al. Suppression of winter heavy precipitation in Southeastern China by the Kuroshio warm current[J],2019,53(2020-03-04).
APA	Xu G.,Chang P.,Ma X.,&Li M..(2019).Suppression of winter heavy precipitation in Southeastern China by the Kuroshio warm current.Climate Dynamics,53(2020-03-04).
MLA	Xu G.,et al."Suppression of winter heavy precipitation in Southeastern China by the Kuroshio warm current".Climate Dynamics 53.2020-03-04(2019).