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Some physical aspects of summer monsoon clouds-comparison of cloud model results with observations

Selvam, AM and Vijayakumar, R and Murty, ASR (1991) Some physical aspects of summer monsoon clouds-comparison of cloud model results with observations. Advances in Atmospheric Sciences, 8 (1). pp. 111-124.

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Abstract

The physical characteristics of the summer monsoon clouds were investigated. The results of a simple cloud model were compared with the aircraft cloud physical observations collected during the summer monsoon seasons of 1973, 1974, 1976 and 1981 in the Deccan Plateau region. The model predicted profiles of cloud liquid water content (LWC) are in agreement with the observed profiles. There is reasonable agreement between the model predicted cloud vertical thickness and observed rainfall. The observed cloud-drop spectra were found to be narrow and the concentration of drops with diameter > 20μn is either low or absent on many occasions. In such clouds the rain-formation cannot take place under natural atmospheric conditions due to the absence of collision-coalescence process. A comparison of the model predicted and observed rainfall suggested that the precipitation efficiency in cumulus clouds of small vertical thickness could be as low as 20 per cent.

Item Type: Article
Additional Information: Copyright of this article belongs to Science Press
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 02 May 2015 04:44
Last Modified: 02 May 2015 04:44
URI: http://moeseprints.incois.gov.in/id/eprint/1135

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