8.4    Double Dynamical Downscaling with WRF for the Western U.S.

Bukovsky, Melissa S., Changhai Liu, National Center for Atmospheric Research/IMAGe

Using WRF, we have been further downscaling regional climate simulations done with a different version of WRF for the North American Regional Climate Change Assessment Program (NARCCAP).  NARCCAP simulations cover nearly all of North America and have a resolution of 50-km, which we have further dynamically downscaled to 10-km over the Western U.S.  In this presentation, we will examine the downscaled and double-downscaled simulations that use the NCEP-DOE Reanalysis 2 (NCEP) as the root provider for their initial and lateral boundary conditions.  That is, we will provide an overview of the impact of further downscaling on the NCEP-driven NARCCAP WRF simulation.