Middle atmosphere dynamics and monsoon variability

Abstract

Some dynamical parameters of the middle atmosphere such as quasi-biennial oscillation in the low-latitude stratospheric zonal winds, interannual variability of the high-latitude middle atmosphere and vertical motions in the tropical middle atmosphere are studied to examine their roles in determining the variability of rainfall over India during the summer monsoon season. It is believed that the amount of sulphurous gases released in the stratosphere from the great volcanic eruptions modifies in the climate (rainfall).  An attempt has also been made in this paper to present the work done so far in this direction.