Simulation of the hydrologic cycle for watersheds
The SESOIL and AGTEHM soil hydrology models have been used to compute hydrologic cycle components for two watersheds. SESOIL is a statistical and seasonal model with respect to the hydrologic cycle, and is viewed as a screening-level model that is used for long term environmental simulations. The terrestrial ecosystem hydrology model AGTEHM combines mechanistic algorithms for climatic and hydrologic processes with vegetation properties to simulate water flow components every hour, except during rainy periods when 15 minute time steps are used. Monthly comparisons are made between the relatively simple SESOIL model and the complex AGTEHM model using data from a forest stand watershed and an experimental agricultural field plot. Good agreement was obtained between annual model predictions for soil moisture, infiltration, evapotranspiration, surface runoff, and groundwater runoff. SESOIL model predictions are also compared directly with observations at the forest stand watershed. 14 references, 1 figure, 4 tables.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6863087
- Report Number(s):
- CONF-8406175-1; ON: DE84014078
- Country of Publication:
- United States
- Language:
- English
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TEHM: a terrestrial ecosystem hydrology model