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EVALUATION OF HIGH DENSITY SURFACE OBSERVATIONS IN COMPLEX TERRAIN AND

EVALUATION OF HIGH DENSITY SURFACE OBSERVATIONS IN COMPLEX TERRAIN AND THEIR CONTRIBUTION TO THE MM5 MODEL. Capt Paul Homan (Mar 07) Advisors: Dr. Wendell Nuss and Lt Col Karl Pfeiffer

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EVALUATION OF HIGH DENSITY SURFACE OBSERVATIONS IN COMPLEX TERRAIN AND

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  1. EVALUATION OF HIGH DENSITY SURFACE OBSERVATIONS IN COMPLEX TERRAIN AND THEIR CONTRIBUTION TO THE MM5 MODEL Capt Paul Homan (Mar 07) Advisors: Dr. Wendell Nuss and Lt Col Karl Pfeiffer Beneficiary: AFWA/XPF, USAFA/DFEG/DFP, USAFA Space Physics and Atmospheric Research Center (SPARC), 25 OWS • STATEMENT OF THE PROBLEM • How does adding fine scale weather obs from the USAF Academy’s High Wind Alert System (HWAS) enhance a fine scale forecast model (MM5)? • To what extent do surface obs at different elevations provide enhanced structure to features within a mesoscale model? • Assess mesoscale/microscale predictability limits and explore the impact of improved data assimilation and data denial efforts using targeted HWAS obs. • ANTICIPATED RESULTS • Enhanced vertical structure in modeled atmosphere from surface observations in complex terrain. • Better defined and understood mesoscale structures over topography (downslope winds, mountain waves, turbulence). • Development of forecast model using targeted obs and relocatable window for military operations in areas of complex terrain.

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