APPLICATION OF CATCHMENT-BASED GRID TO LAND MODEL IN THE AOGCM-LSM COUPLED SYSTEM

Abstract

 When coupling AGCM, OGCM and land model, the grid system of AGCM is generally applied to LSM as it is, but in this case, geometrical characteristics or distribution of vegetation are not considered. Catchment-baed grid is suitable for land model, but it has complex shape and difficult to deal with, and there is problems on the conservation in the remapping. In this study, an algorithm of 1st order conservative remapping algorithm for arbitrary spherical grids including catchment-based grid and suggest the methodology to implement the catchment-based grid to land model in the coupled system with aogcm.