Recent surface cooling in the Yellow and East China Seas and the associated North Pacific climate regime shift SCIE SCOPUS

Cited 12 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Recent surface cooling in the Yellow and East China Seas and the associated North Pacific climate regime shift
Author(s)
Kim, Yong Sun; Jang, Chan Joo; Yeh, Sang-Wook
KIOST Author(s)
Kim, Yong Sun(김용선)Jang, Chan Joo(장찬주)
Publication Year
2018-03-15
Abstract
The Yellow and East China Seas (YECS) are widely believed to have experienced robust, basin-scale warming over the last few decades. However, the warming reached a peak in the late 1990s, followed by a significant cooling trend. In this study, we investigated the characteristics of this low-frequency sea surface temperature (SST) variance and its dynamic relationship with large-scale climate variability through cyclostationary orthogonal function analysis for the 1982-2014 period. Both regressed surface winds on the primary mode of the YECS SST and trends in air-sea heat fluxes demonstrate that the intensification of the northerly winds in winter contribute largely to the recent cooling trend by increasing heat loss to the atmosphere. As a localized oceanic response to these winds, the upwind flow seems to bring warm waters and partially counteracts the basin-scale cooling, thus contributing to a weakening of the cooling trend along the central trough of the Yellow Sea. In the context of the large-scale climate variabilities, a strong relationship between the YECS SST variability and Pacific Decadal Oscillation (PDO) became weak considerably during the recent cooling period after the late 1990s as the PDO signals appeared to be confined within the eastern basin of the North Pacific in association with the regime shift. In addition to this decoupling of the YECS SST from the PDO, the intensifying Siberian High pressure system likely caused the enhanced northerly winds, leading to the recent cooling trend. These findings highlight relative roles of the PDO and the Siberian High in shaping the YECS SST variance through the changes in the large-scale atmospheric circulation and attendant oceanic advection.
ISSN
0278-4343
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/992
DOI
10.1016/j.csr.2018.01.009
Bibliographic Citation
CONTINENTAL SHELF RESEARCH, v.156, pp.43 - 54, 2018
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
HYDROGRAPHIC OBSERVATIONS; ATMOSPHERIC CIRCULATION; WINTER MONSOON; MARGINAL SEAS; WARM CURRENT; EL-NINO; TEMPERATURE; VARIABILITY; OCEAN; OSCILLATION
Keywords
Sea surface temperature (SST); Yellow and East China Sea (YECS); Pacific Decadal Oscillation (PDO); Siberian High; Regime shift; Kuroshio Current
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

upper ocean dynamics,regional climate modeling,ocean climate change,해양상층역학,지역기후모델링,해양기후변화

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