해양순환모형에서 열염분순환의 수평해상도에 대한 민감도:동안경계류의 생성

Title
해양순환모형에서 열염분순환의 수평해상도에 대한 민감도:동안경계류의 생성
Alternative Title
Sensitivity of Buoyancy Driven Circulations on the Horizontal Resolution in an Ocean Circulation Model: Formation of an Eastern Boundary Current
Author(s)
박영규
KIOST Author(s)
Park, Young Gyu(박영규)
Publication Year
2004-08-01
Abstract
Through an idealized modeling study, the dependence of thermally driven circulation from a depth level coordinate general ocean circulation model (GFDL/MOM) on horizontal resolution is investigated while focusing on the eastern boundary current. In general the circulation patterns do not show significant sensitivity to the resolution except the northern and the eastern boundaries. When the resolution is low, as in earlier studies the zonal flow driven by the meridional sea surface temperature gradient sinks to the intermediate level at the eastern wall. As the resolution becomes higher, a northward eastern boundary current emerges. The current continues along the along the perimeter of the basin cyclonically and supplies warm water to polar ocean while changing the temperature and velocity structures along its path to make the model results realistic and physical. A simple scaling analysis shows that the eastern boundary current is caused by the vortex column stretching due to the downwelling of the zonal flow at the eastern wall. The vortex column stretching whose magnitude increases linearly with the resolution is balanced by the lateral friction and beta effect both of which require a northward flow along the eastern wall. The scaling analysis also shows that the magnitude of the boundary current, if there is one, is inversely proportional to the horizontal resolution as consistent with the model results.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31795
Bibliographic Citation
제3회 한국유체공학학술대회, pp.1131 - 1134, 2004
Publisher
대한기계학회 유체공학부문
Type
Conference
Language
English
Publisher
대한기계학회 유체공학부문
Related Researcher
Research Interests

ocean circulation,ocean mixing,marine debris,해양순환,해양혼합,해양부유물

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