Satellite and radar study of Sriharikota severe cyclonic storm of November 1984

Abstract

A study of Sriharikota cyclone during the period 9"14 November 1984 has been made INSAT-IBVHRR, NOAA-6 and NOAA-7 AVHRR data ill visible and IR channels together with radar observations of coastal radar stations, viz. , CDR Madras, CDR Machilipatnam and CDR Karaikal. The inferences drawn from satellite and radar data are in good agreement with regard to location, intensity estimates and the cloud characteristics near the core region. An attempt was made to estimate the intensity of the system using Dvorak's technique from satellite cloud configuration and Ducheng's method from radar data. Thermal contours corresponding to the top of the cloud field have been drawn using Data Application and Interactive Display (DAID) facility of Meteorological Data Utilisation Centre {MDUC), New Delhi. The strong thermal gradient was observed in the southwest/south sector of the cyclonic storm associated with the maximum sustained wind speed over the region.