P35 The effect of double dynamical downscaling on climate change simulations for the western U.S.

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

Differences in climate changes from different levels of downscaling will be examined in this presentation. We have further dynamically downscaled WRF simulations driven by the NCAR Community Climate System Model (CCSM) version 3 from the North American Regional Climate Change Assessment Program (NARCCAP) from 50-km to 10-km over the Western U.S. using a different version of WRF. Further downscaling does modify the projected climate changes from each parent simulation. We will provide an overview of the differences in some of the climate change projections from these simulations, as well as explanations for some of the differences.