Ramesh C. Srivastava Professor, Department of the Geophysical Sciences and the College Department of the Geophysical Sciences 5734 S. Ellis Ave. HGS 521 Chicago, IL 60637 USA Phone: 773/702-8125 E-mail: srivast@geosci.uchicago.edu Publications

My research interests and activities are in the areas of cloud microphysics, cloud dynamics and radar meteorology. The central problem of cloud microphysics is understanding the development of precipitation starting from the vapor phase. We are conducting theoretical studies of the formation of cloud and rain drops and their size distributions by the processes of condensation (or evaporation) of water vapor, collisions and coalescence, and spontaneous and collisional breakup of raindrops. We are also involved in theoretical studies of the initiation and evolution of ice particles in clouds and the formation of raindrops by melting of the ice particles. The model studies are compared with observations obtained from field experiments conducted in cooperation with others.

In the area of cloud dynamics we conduct numerical simulations of individual clouds with particular reference to the interactions between the microphysics and dynamics. We have recently conducted detailed studies of the development of intense small-scale, short-lived downdrafts known as microbursts. Numerical models of clouds including both dynamics and microphysics require substantial computer resources. Most simulations to date have used parametric representations of the microphysical processes within a dynamical framework.

In the area of radar meteorology, we are involved in the analysis and interpretation of observations of precipitation by a variety of radars, the development of new methods for the remote estimation of precipitation content and rate by radar. The observations are usually obtained in collaborative field experiments using radars and profilers. Currently, we are involved in the analysis and interpretation of radar and other data obtained from the Tropical Rainfall Measuring Mission (TRMM).

Education:

• Ph.D., McGill University, 1964