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3240931 
Journal Article 
The operational mesogamma-scale analysis and forecast system of the US Army Test and evaluation command. Part II: Interrange comparison of the accuracy of model analyses and forecasts 
Liu, Y; Warner, TT; Astling, EG; Bowers, JF; Davis, CA; Halvorson, SF; Rife, DL; Sheu, RS; Swerdlin, SP; Xu, Mei 
2008 
Yes 
Journal of Applied Metereology and Climatology
ISSN: 1558-8424
EISSN: 1558-8432 
47 
4 
1093-1104 
WOS:000255986400012 
This study builds upon previous efforts to document the
performance of the U. S. Army Test and Evaluation Command's Four-Dimensional Weather Modeling
System using conventional metrics. Winds, temperature, and specific humidity were verified for
almost 15 000 forecasts at five U. S. Army test ranges using near-surface mesonet data. The
primary objective was to use conventional metrics to characterize the degree to which forecast
accuracy varies from range to range, within the diurnal cycle, with elapsed forecast time, and
among the seasons. It was found that there are large interrange differences in forecast error,
with larger errors typically associated with the ranges located near complex orography.
Similarly, significant variations in accuracy were noted for different times in the diurnal
cycle, but the diurnal dependency varied greatly among the ranges. Factor of 2 differences in
accuracy were also found across the seasons.