Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait

Tomoharu Senjyu, Sigeaki Matsui, In Seong Han

Research output: Contribution to journalArticle

Abstract

Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait are investigated on the basis of historical hydrographic data applying the same procedures as Senjyu et al. (2006). Empirical orthogonal function (EOF) analysis revealed that the most energetic mode of variation (the EOF first mode), which accounts for about 31. 5% of the total variance, is the in-phase temperature change for the entire strait. The wintertime temperature variation described by the first mode is associated with the wintertime heat flux in the northern East China Sea, while they are poorly correlated in other seasons. The large standard deviation in the time coefficient of the first mode in August suggests a relationship with the horizontal heat advection in summer in the northern East China Sea. On the other hand, the EOF second mode, which explains about 12. 6% of the total variance, is associated with the stratification and baroclinicity in the strait. The time coefficient of the EOF second mode negatively correlates with the baroclinic volume transport through the strait in summer. Comparison of temporal variations among the leading EOF modes for temperature and salinity shows no significant correlations. This indicates that the principal modes of variation in temperature and salinity vary independently within an interannual timescale.

Original languageEnglish
Pages (from-to)789-799
Number of pages11
JournalJournal of Oceanography
Volume66
Issue number6
DOIs
Publication statusPublished - Dec 1 2010

Fingerprint

strait
temperature
salinity
volume transport
summer
heat flux
advection
stratification
temporal variation
energetics
empirical orthogonal function analysis
timescale
sea

All Science Journal Classification (ASJC) codes

  • Oceanography

Cite this

Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait. / Senjyu, Tomoharu; Matsui, Sigeaki; Han, In Seong.

In: Journal of Oceanography, Vol. 66, No. 6, 01.12.2010, p. 789-799.

Research output: Contribution to journalArticle

@article{2653e9f362cf42f89fb15f6775f625dc,
title = "Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait",
abstract = "Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait are investigated on the basis of historical hydrographic data applying the same procedures as Senjyu et al. (2006). Empirical orthogonal function (EOF) analysis revealed that the most energetic mode of variation (the EOF first mode), which accounts for about 31. 5{\%} of the total variance, is the in-phase temperature change for the entire strait. The wintertime temperature variation described by the first mode is associated with the wintertime heat flux in the northern East China Sea, while they are poorly correlated in other seasons. The large standard deviation in the time coefficient of the first mode in August suggests a relationship with the horizontal heat advection in summer in the northern East China Sea. On the other hand, the EOF second mode, which explains about 12. 6{\%} of the total variance, is associated with the stratification and baroclinicity in the strait. The time coefficient of the EOF second mode negatively correlates with the baroclinic volume transport through the strait in summer. Comparison of temporal variations among the leading EOF modes for temperature and salinity shows no significant correlations. This indicates that the principal modes of variation in temperature and salinity vary independently within an interannual timescale.",
author = "Tomoharu Senjyu and Sigeaki Matsui and Han, {In Seong}",
year = "2010",
month = "12",
day = "1",
doi = "10.1007/s10872-010-0064-2",
language = "English",
volume = "66",
pages = "789--799",
journal = "Journal of Oceanography",
issn = "0916-8370",
publisher = "Oceanographic Society of Japan",
number = "6",

}

TY - JOUR

T1 - Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait

AU - Senjyu, Tomoharu

AU - Matsui, Sigeaki

AU - Han, In Seong

PY - 2010/12/1

Y1 - 2010/12/1

N2 - Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait are investigated on the basis of historical hydrographic data applying the same procedures as Senjyu et al. (2006). Empirical orthogonal function (EOF) analysis revealed that the most energetic mode of variation (the EOF first mode), which accounts for about 31. 5% of the total variance, is the in-phase temperature change for the entire strait. The wintertime temperature variation described by the first mode is associated with the wintertime heat flux in the northern East China Sea, while they are poorly correlated in other seasons. The large standard deviation in the time coefficient of the first mode in August suggests a relationship with the horizontal heat advection in summer in the northern East China Sea. On the other hand, the EOF second mode, which explains about 12. 6% of the total variance, is associated with the stratification and baroclinicity in the strait. The time coefficient of the EOF second mode negatively correlates with the baroclinic volume transport through the strait in summer. Comparison of temporal variations among the leading EOF modes for temperature and salinity shows no significant correlations. This indicates that the principal modes of variation in temperature and salinity vary independently within an interannual timescale.

AB - Spatiotemporal characteristics of interannual temperature variations in the Tsushima Strait are investigated on the basis of historical hydrographic data applying the same procedures as Senjyu et al. (2006). Empirical orthogonal function (EOF) analysis revealed that the most energetic mode of variation (the EOF first mode), which accounts for about 31. 5% of the total variance, is the in-phase temperature change for the entire strait. The wintertime temperature variation described by the first mode is associated with the wintertime heat flux in the northern East China Sea, while they are poorly correlated in other seasons. The large standard deviation in the time coefficient of the first mode in August suggests a relationship with the horizontal heat advection in summer in the northern East China Sea. On the other hand, the EOF second mode, which explains about 12. 6% of the total variance, is associated with the stratification and baroclinicity in the strait. The time coefficient of the EOF second mode negatively correlates with the baroclinic volume transport through the strait in summer. Comparison of temporal variations among the leading EOF modes for temperature and salinity shows no significant correlations. This indicates that the principal modes of variation in temperature and salinity vary independently within an interannual timescale.

UR - http://www.scopus.com/inward/record.url?scp=78649956830&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78649956830&partnerID=8YFLogxK

U2 - 10.1007/s10872-010-0064-2

DO - 10.1007/s10872-010-0064-2

M3 - Article

AN - SCOPUS:78649956830

VL - 66

SP - 789

EP - 799

JO - Journal of Oceanography

JF - Journal of Oceanography

SN - 0916-8370

IS - 6

ER -