Recent surface cooling in the Yellow and East China Seas in association with the North Pacific climate regime shift in 1997/98

Title
Recent surface cooling in the Yellow and East China Seas in association with the North Pacific climate regime shift in 1997/98
Author(s)
김용선; 장찬주; 예상욱
KIOST Author(s)
Kim, Yong Sun(김용선)Jang, Chan Joo(장찬주)
Publication Year
2019-03-21
Abstract
The Yellow and East China Seas (YECS) have warmed during the last decades. In addition to this warming trend, the sea surface temperature (SST) reveals a basin-scale surface cooling trend after the late 1990s. In this study, we investigated the characteristics of this recent coo ling trend and its dynamic relationship with largescale 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 show 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) has considerably weakened during the recent cooling period after the late 1990s as the PDO signals appeared to be confinedwithin the eastern basin of the North Pacific in association with the regime shift.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22799
Bibliographic Citation
The 20 th Pacific Asian Marginal Seas Meeting, pp.145, 2019
Publisher
The Pacific Asian Marginal Seas Meeting
Type
Conference
Language
English
Publisher
The Pacific Asian Marginal Seas Meeting
Related Researcher
Research Interests

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

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