Absolute Barotropic Instability and Monsoon Depressions

R. S. Lindzen Center for Earth and Planetary Physics, Harvard University, Cambridge, MA 02138

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B. Farrell Center for Earth and Planetary Physics, Harvard University, Cambridge, MA 02138

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A. J. Rosenthal Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA 02139

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Abstract

We have approached the barotropic instability of mean zonal flows over the Bay of Bengal for the months June, July and August from the perspective of pulse asymptotics rather than most rapidly growing normal modes. The results are in good agreement with observations of monsoon depressions.

Abstract

We have approached the barotropic instability of mean zonal flows over the Bay of Bengal for the months June, July and August from the perspective of pulse asymptotics rather than most rapidly growing normal modes. The results are in good agreement with observations of monsoon depressions.

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