A tentative model of Andhi

Authors

  • P. V. JOSEPH Meteorological Office, Pune

DOI:

https://doi.org/10.54302/mausam.v33i4.2581

Abstract

Based on the thunderstorm downdraft model developed by Charba (1974) and Goff (1976), a tentative model of Andhi (the convective duststorm of northwest India) has been suggested. This model is able to explain qualitatively the visibility variations in atypical type-1 Andhi(The details of visibility variations in the four types of Andhi have been given by Joseph et al. 1980). The slower visibility improvement and the consequent longer duration of type-2 (night time) Andhi also gets a logical explanation, if one assumes that the Andhi 'head' moves forward more slowly at night, when the ambient air-density is higher. This assumption has theoretical support from studies on the propagation of 'gravity current' heads.

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Published

01-10-1982

How to Cite

[1]
P. V. JOSEPH, “A tentative model of Andhi”, MAUSAM, vol. 33, no. 4, pp. 417–422, Oct. 1982.

Issue

Vol. 33 No. 4 (1982): MAUSAM

Section

Shorter Contribution

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