A general rule for synoptic-eddy feedback onto low-frequency flow SCIE SCOPUS

Cited 41 time in WEB OF SCIENCE Cited 41 time in Scopus
Title
A general rule for synoptic-eddy feedback onto low-frequency flow
Author(s)
Kug, Jong-Seong; Jin, Fei-Fei; Park, Juhyun; Ren, Hong-Li; Kang, In-Sik
Publication Year
2010-11
Abstract
In this study, scale interaction between synoptic eddies and low-frequency flow is investigated. It is demonstrated here that there is a general rule, the "left-hand rule", that describes synoptic eddy feedback onto low-frequency flow. The rule is that low-frequency anomalies systematically stir and deform the transient eddies in such a way that the irrotational eddy-vorticity fluxes are directed preferentially about 90A degrees toward the left-hand side of the low-frequency flow; thus this eddy feedback plays a positive role in maintaining and prolonging low-frequency flow under the stormy atmosphere. Similarly, we show that the irrotational eddy-temperature and moisture fluxes are also directed preferentially about 90A degrees toward the left-hand side of the low-frequency flow in the northern hemisphere. The eddy-temperature fluxes and their vertical structure play a positive role in reinforcing the low-frequency flow in the low levels. The moisture fluxes play a role in enhancing low-frequency flow by providing eddy-induced moisture convergence and divergence.
ISSN
0930-7575
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4019
DOI
10.1007/s00382-009-0606-8
Bibliographic Citation
CLIMATE DYNAMICS, v.35, no.6, pp.1011 - 1026, 2010
Publisher
SPRINGER
Subject
NORTH-ATLANTIC OSCILLATION; MIDLATITUDE STORM TRACKS; GEOPOTENTIAL HEIGHT; ZONAL INDEX; TELECONNECTION PATTERN; CIRCULATION ANOMALIES; TEMPERATURE-FIELDS; ARCTIC OSCILLATION; HEMISPHERE WINTER; ANNULAR MODES
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
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