Long-term changes of South China Sea surface temperatures in winter and summer SCIE SCOPUS

Cited 4 time in WEB OF SCIENCE Cited 5 time in Scopus
Title
Long-term changes of South China Sea surface temperatures in winter and summer
Author(s)
Park, Young-Gyu; Choi, Ara
KIOST Author(s)
Park, Young Gyu(박영규)
Publication Year
2017-07-01
Abstract
Utilizing available atmospheric and oceanographic reanalysis data sets, the long-term trend in South China Sea (SCS) sea surface temperature (SST) between 1950 and 2008 and the governing processes are investigated. Both winter and summer SST increased by comparable amounts, but the warming patterns and the governing processes were different. Strong warming in winter occurred in a deep central area, and during summer in the southern region. In winter the net heat flux into the sea increased, contributing to the warming. The spatial pattern of the heat flux, however, was different from that of the warming. Heat flux increased over the coastal area where warming was weaker, but decreased over the deeper area where warming was stronger. The northeasterly monsoon wind weakened lowering the shoreward Ekman transport and the sea surface height gradient. The cyclonic gyre which transports cold northern water to the south weakened, thereby warming the ocean. The effect was manifested more strongly along the southward western boundary current inducing warming in the deep central part. In summer however, the net surface heat flux decreased and could not contribute to the warming. Over the southern part of the SCS, the weakening of the southwesterly summer monsoon reduced southeastward Ekman transport, which is parallel to the mean SST gradient. Southeastward cold advection due to Ekman transport was reduced, thereby warming the surface near the southeastern boundary of the SCS. Upwelling southeast of Vietnam was also weakened, raising the SST east of Vietnam contributing to the southern summer warming secondarily. The weakening of the winds in each season was the ultimate cause of the warming, but the responses of the ocean that lead to the warming were different in winter and summer.
ISSN
0278-4343
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1188
DOI
10.1016/j.csr.2016.07.019
Bibliographic Citation
CONTINENTAL SHELF RESEARCH, v.143, pp.185 - 193, 2017
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
SEASONAL VARIABILITY; KUROSHIO INTRUSION; CIRCULATION; CLIMATE; REANALYSIS; MONSOON; HEIGHT
Keywords
Warming trend; Climate change; Ekman transport; Ocean advection; Monsoon; Upwelling
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

ocean circulation,ocean mixing,marine debris,해양순환,해양혼합,해양부유물

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