Abstract: The problem of the transition from axisymmetric to nonaxisymmetric flow in a rotating annulus is treated using a simplified version of a two-layer quasi-geostrophic model which is appropriate to an annular region. The ...

Abstract: An alternative algorithm to sum a series of spherical harmonies is presented and tested. The algorithm is approximately 10?20 times faster than a standard method under the condition that both start with only the knowledge ...

Abstract: It is shown that the dynamical equations governing atmospheric flow can be transformed explicitly into the spectral domain in terms of spherical harmonies. The resulting spectral forms preserve the energy principle of the ...

Abstract: No abstract available.

Abstract: No abstract available.