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Electrical, microphysical and dynamical observations in summer monsoon clouds

Selvam, AM and Vijayakumar, R and Manohar, GK and Murty, ASR (1991) Electrical, microphysical and dynamical observations in summer monsoon clouds. Atmospheric Research, 26. pp. 19-32.

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Abstract

Electrical, microphysical and dynamical conditions in ground-based clouds were studied using the observations carried out at Mahabaleshwar (17°56′N, 73°40′E; 1382 m ASL), a hill station, during the summer monsoon season of 1977. There is a significant correlation between the rain intensity and the corresponding atmospheric electric potential gradient. The diurnal curves of rainfall and negative electric potential gradient exhibited two peaks. The peak in rainfall during the morning hours and the afternoon peak in electric potential gradient were statistically significant. The early morning peak in rainfall was attributed to the enhanced convergence caused by the radiational imbalance in the cloud and cloud-free regions during active monsoon conditions. The afternoon peak in the electric potential gradient was attributed to the cloud formation due to convection.

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier Science
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 11 Jun 2016 07:01
Last Modified: 11 Jun 2016 07:01
URI: http://moeseprints.incois.gov.in/id/eprint/3837

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