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Electric Field Variation in Clear and Convective Conditions at a Tropical Urban Location
S JANA, A MAITRA
Published in Blackwell Publishing Ltd
2019
Volume: 124
   
Issue: 4
Pages: 2068 - 2078
Abstract

The behavior of atmospheric electric field in terms of potential gradient (PG) has been studied during the period of 2013 and 2014 at a tropical and urban location Kolkata (22°34′N, 88°22′E), India. The clear-weather PG is influenced by varying concentration of black carbon, which is a major pollutant in urban atmosphere. The diurnal variation of the clear-day PG follows that of the black carbon concentration in all the seasons. It is found that cloud base height and liquid water path correlate well with the PG change in convective events. It is shown that during a convective event the PG change measured over 10-min interval about 30 min before the onset of rain can approximate impending rain accumulation. ©2019. American Geophysical Union. All Rights Reserved.

About the journal
JournalJournal of Geophysical Research: Atmospheres
PublisherBlackwell Publishing Ltd
ISSN2169-897X
Open AccessNo