Temporal and spatial variabilities of Japan Sea surface temperature and atmospheric forcing
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Authors
Chen, Yuchun
Chu, Peter C.
Lu, Shihula
Subjects
sea surface temperature
temporal and spatial variability
composite analysis
empirical orthogonal functions
surface air temperature
wind stress curl
temporal and spatial variability
composite analysis
empirical orthogonal functions
surface air temperature
wind stress curl
Advisors
Date of Issue
1998
Date
1998
Publisher
Language
Abstract
In this study, we used the National Centers for Environmental Prediction monthly sea
surface temperature (SST) and surface air temperature (SAT) data during 1982–1994
and the National Center for Atmospheric Research surface wind stress curl data during
1982–1989 to investigate the Japan Sea SST temporal and spatial variabilities and their
relations to atmospheric forcing. First, we found an asymmetry in the correlation
coefficients between SST and wind stress curl, which implies that the SST variability at
the scales of the order of one month is largely due to atmospheric forcing. Second, we
performed three analyses on the data fields: annual mean, composite analysis to obtain
the monthly anomaly relative to the annual mean, and empirical orthogonal function
(EOF) analysis on the residue data relative to the summation of the annual mean and the
monthly anomaly. The first EOF mode of SST accounts for 59.9% of the variance and
represents the Subpolar Front. The temporal variation of the first EOF mode implies that
the deep Japan Sea could be cooler in cold seasons (November–April) of 1984–1987.
Third, we computed cross-correlation coefficients among various principal components
and found that the atmospheric warming/cooling is the key factor causing intra-seasonal
and interannual SST variabilities.
Type
Article
Description
Journal of Oceanography, Oceanographic Society of Japan, Vol. 54, pp. 273 to 284. 1998
Series/Report No
Department
Oceanography
Organization
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NPS Report Number
Sponsors
Funder
Format
Citation
Chu, P.C., Y.C. Chen, and S.H. Lu, 1998: Temporal and spatial variabilities of Japan Sea surface temperature and atmospheric forcing (paper download). Journal of Oceanography, Oceanographic Society of Japan, Vol. 54, pp. 273 to 284. 1998
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.