Numerical study of the hydroclimate of the Southwestern United States using the UC-LLNL regional climate system model
The UC-LLNL Regional Climate System Model (RCSM) has been under development since 1991. This modeling system includes interactions among atmospheric, land surface, and subsurface processes. Important physical processes included in this RCSM are effects of vegetation, surface energy and water budgets, lateral hydrologic transport, and agro-ecosystem response. Our RCSM is composed of a preprocessor fro importing, interpreting, and analyzing multi-scale data, a Mesoscale Atmospheric Simulation (MAS) model, a multi-layer soil-plant-snow (SPS) model that is interactively coupled with the atmospheric model, a physically based, fully distributed watershed hydrology-riverflow model (TOPMODEL) and a post-processor for output data analysis. We are currently implementing and validating the Decision Support System for Agro-Economic Transfer (DSSAT). An important feature of our RCSM us the ability to simulate the atmospheric, land surface, and hydrologic variables from the global scale down to the watershed catchment scale. the full coupled MAS and SPS models have been used for experimental operational NWP over the southwestern United States since October 1993. Our watershed hydrology-riverflow model has been set up for the Russian River watershed and the Headwaters to the North Fork of the American River in Northern California.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 461377
- Report Number(s):
- UCRL-JC-125339; CONF-970207-7; ON: DE97051959
- Resource Relation:
- Conference: 77. annual meeting of the American Meteorological Society, Long Beach, CA (United States), 2-7 Feb 1997; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
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The UC-LLNL Regional Climate System Model
River flow response to precipitation and snow budget in California during the 1994/95 winter