Bottom pressure variability in the Kuroshio Extension driven by the atmosphere and ocean instabilities SCIE SCOPUS

Cited 4 time in WEB OF SCIENCE Cited 4 time in Scopus
Title
Bottom pressure variability in the Kuroshio Extension driven by the atmosphere and ocean instabilities
Author(s)
Na, Hanna; Watts, D. Randolph; Park, Jae-Hun; Jeon, Chanhyung; Lee, Ho Jin; Nonaka, Masami; Greene, Andrew D.
Publication Year
2016-08
Abstract
The relative importance of atmospheric forcing on oceanic intraseasonal (7-60 days) barotropic variability is investigated in the Kuroshio Extension region by comparing in situ measurements with two models: a wind-forced barotropic model and an ocean general circulation model. Large-scale wind stress curl forcing (an atmospheric mode) becomes successively more influential with decreasing periods (at 7-15 day band, compared to 15-30 day and 30-60 day bands). On the other hand, oceanic instabilities (an oceanic mode) become more important with increasing period (at 30-60 day band, compared to 15-30 day and 7-15 day bands). Comparison between the barotropic model and the ocean general circulation model results reveals differences on the broader gyre scale: the atmospheric mode exhibits basin-mode-like spatial patterns with faster phase propagation from east to west, whereas the oceanic mode shows eddy-like spatial patterns with slower westward propagation. The atmospheric mode, which has received less attention on the intraseasonal time scale, contributes an important fraction to the barotropic variability in the Kuroshio Extension region.
ISSN
2169-9275
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2158
DOI
10.1002/2016JC012097
Bibliographic Citation
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v.121, no.8, pp.6507 - 6519, 2016
Publisher
AMER GEOPHYSICAL UNION
Subject
SEA-LEVEL VARIABILITY; SURFACE PRESSURE; WIND-DRIVEN; DISTURBANCES; CIRCULATION; TOPOGRAPHY; REANALYSIS; ALTIMETRY; GRAVITY; EDDIES
Keywords
barotropic model; barotropic variability; bottom pressure; intraseasonal variability; Kuroshio Extension; ocean general circulation 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