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Sea surface salinity variability and its relation to El nino in a CGCM

Authors
Yim, Bo YoungYeh, Sang-WookNoh, YignMoon, Byung-KwonPark, Young-Gyu
Issue Date
May-2008
Publisher
한국기상학회
Keywords
sea surface salinity; El Nino; CGCM; barrier layer thickness; stratification
Citation
Asia-Pacific Journal of Atmospheric Sciences, v.44, no.2, pp.173 - 189
Indexed
SCIE
SCOPUS
KCI
Journal Title
Asia-Pacific Journal of Atmospheric Sciences
Volume
44
Number
2
Start Page
173
End Page
189
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/42519
ISSN
1976-7633
Abstract
We explore the characteristics of sea surface salinity (SSS) variability along with its relation to the El Nino by analyzing results from a coupled general circulation model (CGCM). The CGCM simulates realistic El Nino as well as the mean and the variability of SSS. The SSS anomaly variability is dominated on interannual timescales with its maximum variance in the western tropical Pacific, and large positive SSS anomaly events occur prior to El Nino. The SSS variability and its associated barrier layer thickness are related to the El Nino in the CGCM. Between two subsequent El Nino events a buildup of warm water is evident as indicated by a large barrier layer thickness in the western equatorial Pacific. Weak stratification due to high SSS anomalies helps to discharge the heat stored in the thick barrier layer in the western equatorial Pacific, initiating El Nino development. Further analysis is conducted to support the role of SSS variability associated with El Nino in terms of the variability of heat content anomalies.
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COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING > 1. Journal Articles

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COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING)
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