Impact of subgrid-scale orography parameterization on the simulation of orographic flows

Abstract

When subgrid-scale orography is accounted for, the mountain wave amplitude is reduced, the blocking is increased, the leeside low-level turbulence is intensified, and the regional wind characteristics are modified. Detailed comparisions made with the PYREX data indicate that the inclusion of subgrid orography yields a significant improvement in the model results. -from Authors