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On Rossby waves modified by weak sinusoidal shear

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Shepherd, T. G. ORCID: https://orcid.org/0000-0002-6631-9968 (1988) On Rossby waves modified by weak sinusoidal shear. Geophysical & Astrophysical Fluid Dynamics, 40 (3-4). pp. 225-237. ISSN 1029-0419

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To link to this item DOI: 10.1080/03091928808208826

Abstract/Summary

The spatial structure of beta-plane Rossby waves in a sinusoidal basic zonal flow U 0cos(γ,y) is determined analytically in the (stable) asymptotic limit of weak shear, U 0γ2 0/β≈1. The propagating neutral normal modes are found to take their greatest amplitude in the region of maximum westerly flow, while their most rapid phase variation is achieved in the region of maximum easterly flow. These results are shown to be consistent with what is obtained by ray-tracing methods in the limit of small meridional disturbance wavelength.

Item Type:Article
Refereed:Yes
Divisions:Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
ID Code:32990
Publisher:Taylor & Francis Ltd
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