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Orography in a contour dynamics model of large-scale atmospheric flow

Ambaum, M. H. P. and Verkley, W.T.M. (1995) Orography in a contour dynamics model of large-scale atmospheric flow. Journal of the Atmospheric Sciences, 52 (15). pp. 2643-2662. ISSN 1520-0469

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To link to this article DOI: 10.1175/1520-0469(1995)052<2643:OIACDM>2.0.CO;2

Abstract/Summary

The influence of orography on the structure of stationary planetary Rossby waves is studied in the context of a contour dynamics model of the large-scale atmospheric flow. Orography of infinitesimal and finite amplitude is studied using analytical and numerical techniques. Three different types of orography are considered: idealized orography in the form of a global wave, idealized orography in the form of a local table mountain, and the earth's orography. The study confirms the importance of resonances, both in the infinitesimal orography and in the finite orography cases. With finite orography the stationary waves organize themselves into a one-dimensional set of solutions, which due to the resonances, is piecewise connected. It is pointed out that these stationary waves could be relevant for atmospheric regimes.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
ID Code:7704
Publisher:American Meteorological Society

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