A prognostic model for the surface temperature, height of the atmospheric boundary layer, and surface wind

A prognostic one-dimensional bulk model of the atmospheric boundary layer is described for the surface temperature, height of the atmospheric boundary layer, and surface wind. Heat conduction into the ground is accounted for by using a force-restore equation. Long-wave radiation and shortwave radiation are calculated for clear, overcast, or partly cloudy skies. Surface fluxes of momentum, heat, and water vapor are computed by using generalized similarity theory. The procedures are applied to mean July conditions at Inuvik, Edmonton, and Port Hardy. Integrations are performed for 3 days and reproduce the diurnal cycles reasonably well. Sensitivity tests show that the surface emissivity is an important variable.