THE SIMULATION OF SURFACE HEAT FLUXES IN A LAND SURFACE-ATMOSPHERE MODEL

A modified soil-canopy-boundary layer model based on Ek and Mahrt is p resented to simulate surface heat fluxes on a daily basis. The model i s validated against independent published bare soil data from Agassiz, Canada, and observations taken over sparse and dense vegetation as pa rt of the HAPEX-MOBILHY (Hydrological Atmospheric Pilot Experiment-Mod elisation du Bilan Hydrique) experiment. Simulated surface energy comp onents are shown to be in dose agreement with the observations, and th e sensitivity of the parameterization is evaluated.