Abstract
A simple parameterization scheme, which can estimate heat flux over a complex land-use surface, is presented. In this method, the ground surface in a grid area is classified into several categories. Surface temperature and sensible/latent heat fluxes are estimated on each land-use category. The total heat fluxes on the grid point is given by the average of heat fluxes on each land-use surface weighted by its area. The results of the one-dimensional model with this parameterization is compared with a two-dimensional fine grid model, which estimates heat fluxes on the periodic land-use surface.
The heat fluxes estimated by the parameterization method agree well with those given by the twodimensional model. This parameterization allows one to estimate not only accurate heat fluxes over a complex land-use surface, but also the surface temperature on each land-use category in a grid area.
