A catchment-based land surface model for GCMs and the framework for its evaluation

A. Ducharne, R. D. Koster, M. J. Suarez, P. Kumar

Research output: Contribution to journalArticlepeer-review

Abstract

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 languageEnglish (US)
Pages (from-to)769-773
Number of pages5
JournalPhysics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere
Volume24
Issue number7
DOIs
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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