Multiparameter radar and aircraft study of raindrop spectral evolution in warm-based clouds

Abstract

The evolution of several radar reflectivity cells was studied and certain key microphysical features were identified, notably the evolution of raindrop spectra from a "growth' type to an equilibrium type. Further evidence that positive differential reflectivity columns are centered on regions of updraft is provided. A small hail melting model is used to show that the large observed differential reflectivities near cloud base may be due to substantial raindrop growth occurring during continuous collection of cloud water as the particle melts and descends in moderate updrafts. -from Authors