Remote sensing study of cloud top absolute temperature with surface rainfall over Lahore (Pakistan) during monsoon

Abstract

The study attempts to build a relationship between clouds top absolute temperature and rainfall during monsoon period over Lahore during 2019. For this purpose, meteorological data was taken from Pakistan Meteorological Department (PMD) of few parameters (temperature and rainfall) for Lahore during monsoon period, i.e., from July to September, 2019. The study revealed interesting results for the observed three months. In July and August, the rainfall and temperature trend showed an inverse relation, whereas a decreased trend was observed for both temperature and rainfall during September, 2019. In Pakistan, most of the rainfall is a result of the depressions created over Bay of Bengal and Arabian Sea. High temperatures cause lower pressure that becomes a reason for originating of low pressures/depressions resulting in monsoon rainfall. During September, the average temperature of the study area was lower comparatively that ultimately resulted in low rainfall, and only 54 mm of total rainfall was recorded over Lahore during September, 2019 which was quite less than in July and August. Satellite cloud top temperatures were also taken from EUMETSAT to establish a relation between cloud top absolute temperature and surface rainfall over Lahore.