The Influence of Cloud Drip Size Distribution on Simulation Seeding Effects of Hail-Bearing Cloud

Authors

  • M Ćurić Institute of Meteorology University of Belgrade, Serbia
  • D Janc Institute of Meteorology University of Belgrade, Serbia
  • V Vučković Institute of Meteorology University of Belgrade, Serbia

Abstract

Two versions of a microphysical model were applied to investigate the silver iodide/cloud environment interaction.  One version uses the monodisperse size distribution for cloud droplets, while the Marshall-Palmer distribution was applied to raindrop fraction.  The second version uses the Khrgian-Mazin size distribution for the entire drop spectra.  The AgI residence time and the graupel production were calculated at the top of the seeding zone defined between isotherm levels of -8 degrees C and -12 degrees C, when the AgI agent is injected at the level of -8 degrees C. AgI agent residence time and graupel production were found to be greater in the KM version in comparison to the MMP version.  Graupel production was found to be highly dependent on drop size distribution and mean radius of drop spectra.

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Scientific Papers