Journal of the Marine Biological Association of India

Volume 14 Issue 2

Forecasting the tracks of monsoon depressions by non-divergent barotropic model.

J. Shukla

A non-divergent barotropic model, for which the input consists of stream function derived from the observed wind, is used for predicting the flow patterns ova Indian region. Following the usual methodology of' total now' method of predicting the. hurricane-track, stream function minimum is recognized as the centre of the monsoon-depression and its trajectory is found from the forecast stream function field available at successive time steps. The input stream function retains the steering field as well as the vortex field and, therefore, the interactions are accounted for.

The results of verification for two monsoon depressions, consisting of several map-times is presented.

Date : 30-12-1972