Department of Atmospheric Sciences | University of Illinois
Atmospheric Sciences | Colloquia

Atmospheric sciences colloquia

Atmospheric sciences colloquia

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Seminar coordinator: Prof. Greg McFarquhar (mcfarq at illinois.edu)

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Event Detail Information

Event Detail Information

Advances and limitations in establishing the processes that shape the size distributions of precipitating cloud particles

Speaker Dr. Ann Fridlind, NASA Goddard Institute for Space Studies, NY
Date Oct 30, 2013
Time 3:00 pm  
Location Room 114 of the Transportation Building
Sponsor Department of Atmospheric Sciences, University of Illinois
Contact Shirley Palmisano
Phone 217-244-5737
Event type Graduate colloquium
Views 967

A general requirement of cloud microphysics modeling at any scale is to represent the number, projected area, and mass size distribution of hydrometeors. Here we focus on simulation of observed size distributions of precipitating hydrometeors, i.e., those of roughly 50 micrometers or greater maximum dimension. The first half of the presentation will focus on observational evidence of near-equilibrium raindrop size distributions in the tropics. The observed size distributions are compared with laboratory and theoretical results and with parcel and 3D simulations using size-resolved and two-moment microphysics parameterizations. The second half of the presentation will focus on the link between precipitating ice size distribution shapes and ice single-particle properties, which vary substantially with environmental conditions.

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