Stability of Convection between the Day and Night Sides on the Rotating Sphere

Abstract

The stability of convection between the day and night sides on the sphere is examined for the case including the dynamical effect of planetary rotation (the Coriolis force).
First, nonlinear solutions representing convection between the day and night sides are numerically obtained for various parameter values. For some solutions, the convective motion is restricted to the equatorial region by the equatorial β-effect. The linear analysis shows that all the convection cells are stable in the parameter range examined in this study.