Interactions between a barotropic vortex and an idealized subtropical ridge. Part II: structure changes

G. J. Holland, Jenni Evans

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The interactions between a barotropic vortex and an idealized subtropical ridge environment on a beta plane are examined and compared to the well-documented case of a single vortex with no environmental flow. First, the problems and advantages of several potential partitioning methods are discussed and then a three-part partition is chosen. Substantial variations are found from the single vortex case. In particular, the familiar gyres associated with the propagation of a single vortex are markedly distorted and relocated by the environment. A vorticity budget is presented to help isolate the physical mechanisms. This analysis indicates that the major processes are associated with interactions with the gradients of absolute vorticity in the environment. Other nonlinear mechanisms can also be of significance in specific cases. -Authors

Original languageEnglish (US)
Pages (from-to)963-975
Number of pages13
JournalJournal of the Atmospheric Sciences
Volume49
Issue number11
DOIs
StatePublished - Jan 1 1992

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vortex
vorticity
beta-plane
partitioning

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Cite this

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abstract = "The interactions between a barotropic vortex and an idealized subtropical ridge environment on a beta plane are examined and compared to the well-documented case of a single vortex with no environmental flow. First, the problems and advantages of several potential partitioning methods are discussed and then a three-part partition is chosen. Substantial variations are found from the single vortex case. In particular, the familiar gyres associated with the propagation of a single vortex are markedly distorted and relocated by the environment. A vorticity budget is presented to help isolate the physical mechanisms. This analysis indicates that the major processes are associated with interactions with the gradients of absolute vorticity in the environment. Other nonlinear mechanisms can also be of significance in specific cases. -Authors",
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Interactions between a barotropic vortex and an idealized subtropical ridge. Part II : structure changes. / Holland, G. J.; Evans, Jenni.

In: Journal of the Atmospheric Sciences, Vol. 49, No. 11, 01.01.1992, p. 963-975.

Research output: Contribution to journalArticle

TY - JOUR

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