Tropical Cyclones of the North Indian Ocean

: Photographs from polar-orbiting meteorological satellites were used in this study to obtain the frequency and tracks of depressions, storms, and hurricanes in the North Indian Ocean from November 1966 through December 1970 plus October 1971. The distribution of the mean sea-surface temperature, cloudiness, and atmospheric circulation for selected months are discussed in relation to the observed cyclone climatology. Appropriate and pertinent climatic charts of these parameters are presented. The results from the satellite period are compared with the 70-year (1891-1960) climatology of cyclonic storms from the India Meteorological Department (1964). Plotted cyclone tracks derived from satellite data are presented, as are plotted monthly tracks developed by the India Meteorological Department.