Interannual variabilities of sea surface temperature and sea level anomaly related to ENSO in the tropical and North Pacific Ocean system SCOPUS KCI

Title
Interannual variabilities of sea surface temperature and sea level anomaly related to ENSO in the tropical and North Pacific Ocean system
Author(s)
Kim, E.; Jeon, D.
KIOST Author(s)
Kim, Eung(김응)
Publication Year
2008
Abstract
In order to understand the variation of ENSO-related oceanic environments in the tropical and North Pacific Ocean, spatio-temporal variations of sea surface temperature anomaly (SSTA) and sea surface height anomaly (SSHA) are analyzed from distributions of complex empirical orthogonal functions (CEOF). Correlations among warm pool variation, southern oscillation index, and ocean surface currents were also examined with respect to interannual variability of the warm pool in western tropical Pacific. Spatio-temporal distributions of the first CEOF modes for SSTA and SSHA indicate that their variabilities are associated with ENSO events, which have a variance over 30% in the North Pacific. The primary reasons for their variabilities are different; SST is predominantly influenced by the change of barrier layer thickness, while SSH fluctuates with the same phase as propagation of an ENSO episode in the zonal direction. Horizontal boundary of warm pool area, which normally centered around 149°E in the tropics, seemed to be expanded to the middle and eastern tropical regions by strong zonal currents through the mature phase of an ENSO episode.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4575
DOI
10.4217/OPR.2008.30.3.313
Bibliographic Citation
Ocean and Polar Research, v.30, no.3, pp.313 - 324, 2008
Publisher
Korea Ocean Research and Development Institute
Subject
annual variation; El Nino-Southern Oscillation; sea surface height; sea surface temperature; warm pool; Pacific Ocean; Pacific Ocean (North); Pacific Ocean (Tropical)
Keywords
Complex empirical orthogonal function (CEOF); ENSO; Interannual variability; Sea surface height anomaly (SSHA); Sea surface temperature (SST)
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Physical oceanography,Marine security,Marine safety,해양물리,해양방위,해양안전

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