Diagnosis of satellite-derived outgoing long wave radiation in relation to rainfall in India

Summary The implications of the hydrostatic assumption for an anelastic two-dimensional numerical model of a gravity current intruding into a neutrally stratified environment are studied. Particular interest is focused on situations where the gravity current encounters an orographic barrier. Considerable discrepancies between hydrostatic and nonhydrostatic calculations are found in the head region for high Froude numbers, when the resolution is high enough to resolve the head of the current. However, the propagation speed and the depth of the feeder flow are well represented in the hydrostatic model.With 15 Figures