气候变化领域集成服务门户(CCPortal): Forecast of summer precipitation in the Yangtze River Valley based on South China Sea springtime sea surface salinity

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DOI	10.1007/s00382-019-04878-y
	Forecast of summer precipitation in the Yangtze River Valley based on South China Sea springtime sea surface salinity
	Zeng L.; Schmitt R.W.; Li L.; Wang Q.; Wang D.
发表日期	2019
ISSN	0930-7575
起始页码	5495
结束页码	5509
卷号	53 期号:2020-09-10
英文摘要	As a major moisture source, the South China Sea (SCS) has a significant impact on the summer precipitation over China. The ocean-to-land moisture transport generates sea surface salinity (SSS) anomalies that can be used to predict summer precipitation on land. This study illustrates a high correlation between springtime SSS in the central SCS and summer precipitation over the middle and lower Yangtze River Valley (the YRV region). The linkage between spring SSS in the central SCS and summer YRV precipitation is established by ocean-to-land moisture transport by atmospheric processes and land–atmosphere soil moisture feedback. In spring, oceanic moisture evaporated from the sea surface generates high SSS in the central SCS and directly feeds the precipitation over southern China and the YRV region. The resulting soil moisture anomalies last for about 3 months triggering land–atmosphere soil moisture feedback and modulating the tropospheric moisture content and circulation in the subsequent summer. Evaluation of the atmospheric moisture balance suggests both a dynamic contribution (stronger northward meridional winds) and a local thermodynamic contribution (higher tropospheric moisture content) enhance the summer moisture supply over the YRV, generating excessive summer precipitation. Thus, spring SSS in the SCS can be utilized as an indicator of subsequent summer precipitation over the YRV region, providing value for operational climate prediction and disaster early warning systems in China. © 2019, The Author(s).
英文关键词	Moisture flux; Sea surface salinity; South China Sea; Summer precipitation; Yangtze River Valley
语种	英语
scopus关键词	air-sea interaction; atmospheric moisture; precipitation (climatology); sea surface salinity; soil moisture; summer; weather forecasting; China; Pacific Ocean; South China Sea; Yangtze River
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/145910
作者单位	State Key Laboratory of Tropical Oceanography (LTO), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States; Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, United States
推荐引用方式 GB/T 7714	Zeng L.,Schmitt R.W.,Li L.,et al. Forecast of summer precipitation in the Yangtze River Valley based on South China Sea springtime sea surface salinity[J],2019,53(2020-09-10).
APA	Zeng L.,Schmitt R.W.,Li L.,Wang Q.,&Wang D..(2019).Forecast of summer precipitation in the Yangtze River Valley based on South China Sea springtime sea surface salinity.Climate Dynamics,53(2020-09-10).
MLA	Zeng L.,et al."Forecast of summer precipitation in the Yangtze River Valley based on South China Sea springtime sea surface salinity".Climate Dynamics 53.2020-09-10(2019).