Spatial gradients in aerosol optical depth and columnar size characteristics over Arabian Sea and tropical Indian Ocean

Abstract

During the periods when winds ar calm over the oceans, so that local sea production is quite low, and the advection of continental aerosols by pervailing circulations persisits (like during the northeasterly winds over south Asia during winter) there will exist a gradient in aerosol concentration and optical depth form the landmass over to the ocean.