Some features of mean clouding over Bay of Bengal during July and August 1968 and 1969

Abstract

ESSA-8 APT pictures over the Bay of Bengal during forenoon hours of July and August of 1968 the Bay of Bengal between longitudes 80°E111nd 95°E north of the equator was divided into 2½⁰squaiesand total clouding over each square every day was estimated from the satellite pictures. Graphs showing mean clouding over each 2½⁰ latitudinal belt have been drawn separately for each month. It is seen that the mean clouding gradually decreases while going from equator to about 10°N and then rapidly increases to the north upto latitude 20°N. The least value is found to lie somewhere between latitudes 6° to 9°N for all the four months. The least value for August occurs over a slightly northern latitude than that for July. The mean clouding is found to be less in August than in July over latitudes lying to the north of the latitudinal belt of least clouding. This position is reversed equator wards. The mean are clouding has also been studied in relation to the depressions and the position of the monsoon trough.