A kinematic mechanism for positive feedback between synoptic eddies and NAO SCIE SCOPUS

Cited 42 time in WEB OF SCIENCE Cited 43 time in Scopus
Title
A kinematic mechanism for positive feedback between synoptic eddies and NAO
Author(s)
Ren, Hong-Li; Jin, Fei-Fei; Kug, Jong-Seong; Zhao, Jing-Xia; Park, Juhyun
Alternative Author(s)
국종성
Publication Year
2009-06-13
Abstract
A kinematic mechanism for the positive feedback between the North Atlantic Oscillation (NAO) and synoptic eddies are depicted based on observational data analyses. Using three-point rescaled covariance statistics of band-pass-filtered (2-8 days) synoptic eddy fields, we examined observed eddy structure changes associated with winter-mean NAO anomalous flow. It is demonstrated that the NAO flow anomalies systematically deform the structures of recurring synoptic eddies to generate seasonal-mean eddy-vorticity flux anomalies predominately directed to the left-hand side of the NAO flow anomalies. These anomalous eddy-vorticity fluxes converge into the cyclonic center and diverge from the anticyclonic center of the anomalous NAO flow, and thus enhance the NAO flow. Citation: Ren, H.-L., F.-F. Jin, J.-S. Kug, J.-X. Zhao, and J. Park (2009), A kinematic mechanism for positive feedback between synoptic eddies and NAO, Geophys. Res. Lett., 36, L11709, doi:10.1029/2009GL037294.
ISSN
0094-8276
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4282
DOI
10.1029/2009GL037294
Bibliographic Citation
GEOPHYSICAL RESEARCH LETTERS, v.36, 2009
Publisher
AMER GEOPHYSICAL UNION
Subject
NORTH-ATLANTIC OSCILLATION; FREQUENCY FLOW INTERACTION; MIDLATITUDE STORM TRACKS; HEMISPHERE WINTER; DYNAMICS; EDDY; VARIABILITY; ANOMALIES; PATTERN; WAVE
Type
Article
Language
English
Document Type
Article
Publisher
AMER GEOPHYSICAL UNION
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