A new GCM-scale land surface modeling strategy that explicitly accounts for subgrid soil moisture variability and its effects on evaporation and runoff is now being explored. In a break from traditional modeling strategies, the continental surface is disaggregated into a mosaic of hydrological catchments, with boundaries that are not dictated by a regular grid but by topography. Within each catchment, the variability of soil moisture is deduced from TOP-MODEL equations with a special treatment of the unsaturated zone. This paper gives an overview of this new approach and presents the general framework for its off-line evaluation over North-America.
|Original language||English (US)|
|Number of pages||5|
|Journal||Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere|
|State||Published - 1999|
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)