Observable signatures of a convectively generated wave field over the tropics using Indian MST radar at Gadanki (13.5°N, 79.2°E)

Abstract

An experiment was conducted in the month of June 2000 to study the atmospheric dynamical behavior in the troposphere and lower stratosphere in the presence of a cloudy and moist background environment due to the onset of the summer monsoon over Indian peninsula. The cardinal objective was to observe the gravity wave signatures in the convective environment. We successfully monitored the development, maximizing and weakening of convective phenomena within a time span of 3–4 hours on 21–22 June 2000. The vertical wind in the troposphere during this period was found about 6–8 m/s. Variations of the radar returned signal power for the vertical beam with height and time show the continuous growth of high turbulence in the ambient air, ascending as high as the tropopause. The satellite cloud images exhibited the temporal growth and movement of cloud clusters over the region of the radar site during this period.