Coupling High Resolution Earth System Models Using Advanced Computational Technologies
نویسندگان
چکیده
The NASA/GSFC Land Information System (LIS) has now been successfully coupled to the Weather Research and Forecasting (WRF) and Goddard Cumulus Ensemble (GCE) models using parallel techniques in a manner compliant with the Earth System Modeling Framework (ESMF). LIS is a highperformance Land Data Assimilation System (LDAS), developed under funding from ESTO-CT’s Round-3 CAN, whose TRL3 technologies have been advanced to TRL4 the current ESTOAIST project. The original LIS consists of several land surface models run in an uncoupled manner (i.e. ”offline”) using observationally-based precipitation, radiation and meteorological inputs, and surface parameters including Moderate Resolution Imaging Spectroradiometer (MODIS)-based Leaf Area Index (LAI). In this project, LIS is first executed in an uncoupled manner in order to provide soil moisture and soil temperature initial conditions for a case study period (the 2002 International H2O Project (IHOP) field program). Then, during the case study period, the land surface (LIS) and atmospheric (WRF/GCE) models are executed in a coupled manner using ESMF. The simulations using realistic initial land surface states from LIS showed significant improvements in simulating land-atmosphere interactions.
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