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Three Dimensional SBM in MM5. Two Case Studies: Florida Simulation of Sea Breeze (7/27/91): Comparison with FTMS, TMIS California: Orographic Precipitation Event (7/12/2003) Contributors: Alexander Khain, Jimy Dudhia, Danny Rosenfeld, Axel Seifert, and Greg Thompson. Flow Chart.
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Three Dimensional SBM in MM5 • Two Case Studies: • Florida Simulation of Sea Breeze (7/27/91): Comparison with FTMS, TMIS • California: Orographic Precipitation Event (7/12/2003) • Contributors: Alexander Khain, Jimy Dudhia, Danny Rosenfeld, Axel Seifert, and Greg Thompson
Flow Chart • Detailed physical processes included in model • Model solves spectral (bin) microphysical equations • Thirty three bins • Smallest nucleated droplet is 2 microns/largest is 10 microns • 3 km grid resolution
Obs: July 27, 1991 Figure 1 Figure1 Distance (km)
Obs Figure 2 Distance (km)
Figure 4: From: # of observations within histogram ban width divided by total number of positive “returns.” Maritime Continental
Figure 7 Maritime Continental Log Number
Figure 8 Maritime Maritime Continental Continental
Figure 12 FTMS Mar. TMIS Mar. FTMS Inter. TMIS-Inter. FTMS Cont. TMIS-Con.
Figure 13 FTMS Mar. TMIS Mar. TMIS Inter. FTMS Inter. FTMS Con. TMIS Con.
Figure 15 FTMS Mar. FTMS Inter
Figure 16 Reisner2 Reisner2
Summary: Part 1: • SBM is able to reproduce general characteristics of precipitation and storm structure, displaying sensitivity to initial aerosol concentrations • Bulk models able to reproduce some of the microphysical characteristics, including the TMIS sensitivity of precipitation to aerosol concentration.