A brief summary of Dr. G. V. Rao’s research interests |
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Authors: | Yeong-Jer Lin James T Moore Jack Fishman |
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Institution: | (1) Department of Earth and Atmospheric Sciences, Saint Louis University, St. Louis, MO 63103, USA;(2) Chemistry and Dynamics Branch, Science Directorate, NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681-2199, USA |
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Abstract: | A brief summary of Dr. G. V. Rao's research interests is presented. Many of his earlier studies were in conjunction with the
summer Monsoon Experiment of 1979 (MONEX-79). These included: 1) the structure of the Somali jet based on aerial observations;
2) sea-level air trajectories over the equatorial Indian Ocean; 3) structural features of the east African low-level flow;
4) effects of Indian Ocean surface temperature anomaly patterns on the summer monsoon circulations; 5) structures of the monsoon
low-level flow over the Arabian Sea; 6) characteristics and momentum-flux budgets of the Arabian Sea convective bands; and
7) evaporation and precipitation over the Arabian Sea during the monsoon seasons. Dr. Rao's research efforts in recent years
had focused on case studies of mesocyclones spawned by tropical cyclones (TCs) in Florida using Doppler radar data and a mesoscale
numerical model. These included: 1) research on tornadic mesocyclones spawned by TC Earl in 1998; 2) documentation of subtle
differences between tornadic and non-tornadic mesocyclones in TC Floyd in 1999; and 3) numerical simulation of the tornadic
environment observed in peninsular Florida during TC Earl in 1998. Preliminary findings show that the supercells' cold pools
interacted with an existing boundary resulting in increased baroclinicity and horizontal vorticity, and a maximization of
the tornado production potential by the updrafts. The model successfully simulated the mesoscale features of the mesocyclones
and the tornadic environment observed during TC Earl. A 24 h simulation of accumulated rainfall within the inner domain agreed
well with the observed precipitation pattern over the region. |
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Keywords: | Tropical cyclone Monsoon Low-level jet Peninsular Florida Mesoscale Mesoscale-model Mesocyclone Tornado |
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