Upal Saha

TL;DR: In this paper, a critical analysis is done on the nature of variation of the thunderstorm frequencies over an urban metropolitan location Kolkata (22°32′N, 88°20′E), India with the pre-monsoon and monsoon rainfall amounts during the period 1997-2008.

TL;DR: In this article, the association of lightning activity with the long-term as well as seasonal spatio-temporal distribution of convective available potential energy (CAPE), surface convective precipitation, vegetation cover and anthropogenic aerosol loading over the Indian sub-continent has been studied for the period 2000-2014.

TL;DR: In this article, the authors studied the effect of increased air pollution on the boundary layer meteorology of Kolkata and found that PM10 was the dominant atmospheric pollutant during the Deepawali festival.

TL;DR: In this paper, the authors investigated the behavior of various meteorological parameters during 1981-2010 to obtain any asymmetric variability of summertime near surface wind over Indian coastal boundaries, and found that no significant changes were obtained in the trends of surface pressure, surface relative humidity, 2-metre temperature and surface precipitation.

TL;DR: In this article, the authors investigated the spatio-temporal variability of the convective parameters and associated lightning flash rates during the period 1997-2013 including the El Nino and La Nina episode.