Development of a Regional Atmospheric-Hydrologic Model for the Study of Climate Change in California

by ZhiQiang Chen,
M. Levent Kavvas, (M.ASCE),
Liqin Tan,
Su-Tzai Soong,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


An integrated model of atmospheric and hydrologic processes at regional scale over California has been developed in order to translate the large scale atmospheric conditions of critical climatic events to the region of California. It is capable of providing quantitative information about air-soil temperature, surthce water-soil moisture storage, wind, relative humidity, precipitation, net solar radiation, evapotranspiration and infiltration rates corresponding to critical climate scenarios of droughts and global climate change for studies of their water resource impacts and their environmental consequences. This integrated regional atmospheric-hydrologic model (IRAHM) of California has been applied to April 1989 historical period for its validation at 20x20 km grid resolution and its performance is satisfactory.

Subject Headings: Hydrologic models | Water storage | Water shortage | Water resources | Urban and regional development | Climate change | Soil water | California | United States

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