A numerical study on dynamic mechanisms of seasonal temperature variability in the Yellow Sea SCIE SCOPUS

Cited 5 time in WEB OF SCIENCE Cited 11 time in Scopus
Title
A numerical study on dynamic mechanisms of seasonal temperature variability in the Yellow Sea
Author(s)
Dai, Dejun; Qiao, Fangli; Xia, Changshui; Jung, Kyung Tae
Publication Year
2006-10-31
Abstract
Using in situ observations and numerical modeling, this study investigates the dynamical mechanisms of seasonal variability of water temperature in the Yellow Sea (YS). Observations indicate that bottom temperature lags 3-4 months behind surface temperature in reaching a maximum in the central YS. Wave-tide-circulation coupled model simulates this time lag and indicates that the diffusion process is a key factor governing the temperature variation below the surface layer. Based on the diffusion equation of temperature, a scheme is developed to estimate the vertical diffusion coefficient. At an observation station located at 36 degrees 00'N 124 degrees 00'E, the diffusion coefficients from April to September are estimated by using the temperature data from 1954 to 1985. The mean diffusion coefficient (MDC) in the upper layer from 0 m to 15 m is almost one order of magnitude larger than those in the middle layer from 20 to 40 m, except in April. In the middle layer, the MDC is inversely proportional to the squared buoyancy frequency, and the mean value of MDC averaged from June to September is 0.28 cm(2) s(-1). The inverse proportionality agrees with the Osborn's relation, which has been used to estimate the diapycnal diffusivity.
ISSN
0148-0227
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4833
DOI
10.1029/2005JC003253
Bibliographic Citation
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v.111, no.C11, 2006
Publisher
AMER GEOPHYSICAL UNION
Subject
MODEL
Type
Article
Language
English
Document Type
Article
Publisher
AMER GEOPHYSICAL UNION
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse