Boundary layer parameterizations and land surface processes in GFDL GCMS
Abstract
General circulation model (GCM) parameterizations of subgrid scale physical processes are reviewed. The E layer physics is a static stability-dependent parameterization of turbulent vertical mixing in the surface boundary layer, planetary boundary layer, and free atmosphere. The optional F physics is similar to E, but employs the Arakawa-Schubert cumulus parameterization instead of moist convective adjustment. A specification of land surface albedo based upon CLIMAP data and a parameterization of snow albedo that depends on land surface type, snow melt, and snow depth are being tested. A water bucket model of the land surface hydrology is used. The impact of E and F physics on one month GCM forecasts and the results of a GCM soil moisture sensitivity experiment are discussed.
- Publication:
-
International Satellite Land-Surface Climatology Project (ISLSCP) Conference
- Pub Date:
- May 1986
- Bibcode:
- 1986isls.conf...23G
- Keywords:
-
- Air Land Interactions;
- Atmospheric Circulation;
- Dynamic Models;
- Earth Surface;
- Parameterization;
- Planetary Boundary Layer;
- Atmospheric Turbulence;
- E Region;
- Earth Albedo;
- F Region;
- Hydrology Models;
- Snow Cover;
- Geophysics