Evaluation of the Weather Research and Forecast Model Over Dugway, Utah During 2009
Final rept. Oct 2008-Oct 2009
ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM COMPUTATIONAL AND INFORMATION SCIENCE DIRECTORATE
Pagination or Media Count:
The U.S. Army Research Laboratory ARL performed numerous case studies of the Advanced Research version of the Weather Research and Forecasting WRF model at horizontal resolutions of 3 and 1 km to better understand weather output for military use. ARLs devised model sensitivity experiments of several WRF parameterizations including the vertical resolution of 40, 60, and 80 levels, model time steps of 9 and 3 seconds, three different explicit microphysics, and the two planetary boundary layer options. Model output was studied for numerous different meteorological parameters, but most of the effort was aimed at analyzing surface features such as wind, temperature, moisture, and precipitation to better understand how the different parameterizations influenced the surface-based observations. Four diverse meteorological days were studied and statistical results showed little difference between each model simulation. However, significant differences in some of the meteorological variables and some model errors were discovered. These model discrepancies are discussed in detail.