Satellite based observations of LIS and OTD: A comparative study of flash count during the overlapping period

摘要

Characteristics of lightning flashes in different geographical regions are of great interest both in the engineering applications and in the analysis of interactions between lightning and earth’s atmosphere. Thundercloud being optically thick medium, strongly affects the temporal and spatial characteristics of the optical signals produced by lightning. This is observed by sensor of the satellite. The optical measurements of lightning activity recorded by both sensors (LIS and OTD) in the form of flash count, during overlapping period have been compared. Also, their diurnal and annual variation is examined over the Indian land region. Even though LIS has recorded higher flash counts than OTD their variation is almost similar.