WKBJ Approximation of the Stability of a Frontal Mean State
- 1 December 1990
- journal article
- Published by American Meteorological Society in Journal of the Atmospheric Sciences
- Vol. 47 (23) , 2825-2828
- https://doi.org/10.1175/1520-0469(1990)047<2825:waotso>2.0.co;2
Abstract
The baroclinic instability of a frontal mean state is investigated using the WKBJ approximation. The results are compared with numerical calculations performed on the same mean state. Excellent agreement (within 5%) is found for jets whose half-width is as small as a Rossby radius of deformation. For jets 20% broader, the agreement is almost perfect.Keywords
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