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Possible solar influence on atmospheric electric field

Sikka, P and Selvam, AM and Murty, ASR (1988) Possible solar influence on atmospheric electric field. Advances in Atmospheric Sciences, 5 (2). pp. 217-228.

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A physical hypothesis for the electrical coupling of the troposphere, ionosphere and magnetosphere has been proposed. It is shown that the vertical mass exchange takes place in the troposphere, ionosphere and magnetosphere by the gravity wave feedback mechanism through a chain of eddy systems. The vertical mass exchange gives rise to a vertical aerosol current which is responsible for the generation and maintenance of atmospheric electric field and also the variations in the H-component of the geomagnetic field. Any perturbation in the troposphere would be transmitted to ionosphere and vice versa. A global perturbation in ionosphere, as the one caused by solar variability, is transmitted to troposphere influencing weather systems/geomagnetic/atmospheric electrification processes. The theory relating to the above physical mechanism is discussed. Also, results of analysis of atmospheric electrical field data for Colaba, Bombay (8°53' 56" N, 72° 48' 54" E, 9.8 m ASL) and solar activity indices (Ap index, DST index and MSB crossing dates) for the 31 year period from 1936-1966 which provide statistical evidence for solar influence on atmospheric electrification processes are presented.

Item Type: Article
Additional Information: Copyright of this article belongs to Science Press
Uncontrolled Keywords: aerosol current; eddy system; electric field; gravity wave feedback; ionosphere; magnetosphere; solar activity index; solar influence; troposphere, India, Bombay, Colaba
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 02 May 2015 09:23
Last Modified: 02 May 2015 09:23

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