Tests of a numerical algorithm for the linear instability study of flows on a sphere

ISMAEL PÉREZ GARCÍA, YURI N. SKIBA

Abstract

A numerical algorithm for the normal mode instability study of a steady nondivergent flow on a rotating sphere is developed. The algorithm accuracy is tested with zonal solutions of the nonlinear barotropic vorticity equation (Legendre polynomials, zonal Rossby-Harwitz waves and monopole modons).

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