气候变化领域集成服务门户(CCPortal): Remote Sensing of Sea Surface Salinity Variability in the South China Sea

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DOI	10.1029/2020JC016827
	Remote Sensing of Sea Surface Salinity Variability in the South China Sea
	Yi D.L.; Melnichenko O.; Hacker P.; Potemra J.
发表日期	2020
ISSN	21699275
卷号	125 期号:12
英文摘要	Using newly available satellite observations of sea surface salinity (SSS), we provide, for the first time, a detailed and synoptic view of the spatiotemporal variability of SSS in the South China Sea (SCS). The results depict the SCS as a very dynamic region exhibiting variability over a broad range of time scales, from intraseasonal to interannual, with the seasonal cycle dominating (∼47% of the total SSS variance). The seasonal distribution of SSS has considerable latitudinal variations: the strongest variance across the southern SCS (∼5–12°N), weaker in the northern part of the sea (north of ∼18°N), with the weakest seasonal SSS variability in between. The factors controlling patterns of seasonal SSS distribution are closely related to both the external freshwater forcing and ocean processes over the entire SCS monsoon system. The most active interannual SSS variability is found in the northeastern and eastern parts of the SCS, as well as the adjacent western Pacific. A significant basin-wide salinification began in summer of 2015, peaked in spring of 2016 with the averaged amplitude of up to 0.5 PSU, and maintained until the fall of 2016. Such persistent salinification during 2015–2016 following a strong El Nino event can be largely modulated by El Nino-related atmospheric and oceanic dynamics. The intraseasonal variability was found to be surprisingly weak throughout the SCS (the standard deviation <0.2 PSU), except for a few regions near the coast where it is likely related to the intraseasonal variability in the monsoon rainfall and subsequent variations in river runoff. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	El Nino event; hydrological cycle; multi-time scales; satellite sea surface salinity; South China Sea; spatiotemporal variability
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186568
作者单位	International Pacific Research Center, School of Ocean and Earth Science and Technology, University of Hawai'i, Honolulu, HI, United States; Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawai'i, Honolulu, HI, United States
推荐引用方式 GB/T 7714	Yi D.L.,Melnichenko O.,Hacker P.,et al. Remote Sensing of Sea Surface Salinity Variability in the South China Sea[J],2020,125(12).
APA	Yi D.L.,Melnichenko O.,Hacker P.,&Potemra J..(2020).Remote Sensing of Sea Surface Salinity Variability in the South China Sea.Journal of Geophysical Research: Oceans,125(12).
MLA	Yi D.L.,et al."Remote Sensing of Sea Surface Salinity Variability in the South China Sea".Journal of Geophysical Research: Oceans 125.12(2020).