期刊
GEOPHYSICAL RESEARCH LETTERS
卷 36, 期 -, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2008GL036435
关键词
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资金
- National Science foundation (NSF) [ATM 0652145, ATM 0650552, 40528006]
- Meteorological Special Project [GYHY200806005]
- KORDI [PE98401, PP00720]
- National Research Council of Science & Technology (NST), Republic of Korea [PP00720] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, scale interaction between synoptic eddies and low-frequency flow is investigated. The synoptic eddy feedback is a key process in sustaining the low-frequency flow. We show clear evidence using NCEP reanalysis data that there is a general underlying rule-the left-hand rule'', governing the synoptic eddy feedback onto low-frequency flow. This rule states that eddy-vorticity fluxes are directed preferentially about 90 degrees toward their left-hand side, so that they converge into cyclonic flow and diverge from anticyclonic flow. Therefore, the eddy vorticity flux plays a positive role in reinforcing low-frequency flow. Citation: Kug, J.-S., and F.-F. Jin (2009), Left-hand rule for synoptic eddy feedback on low-frequency flow, Geophys. Res. Lett., 36, L05709, doi:10.1029/2008GL036435.
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