HR: 0800h
AN: H41A-0392    [Abstracts]
TI: Estimates of Evaporation From Terrestrial Surface Water Bodies Using the Global Lakes and Wetlands Database
AU: Ortiz, V
EM: ortizv@uci.edu
AF: Department of Earth System Science, Croul Hall, University of California, Irvine, CA 92697 United States
AU: * Goteti, G
EM: ggoteti@uci.edu
AF: Department of Earth System Science, Croul Hall, University of California, Irvine, CA 92697 United States
AU: Famiglietti, J
EM: jfamigli@uci.edu
AF: Department of Earth System Science, Croul Hall, University of California, Irvine, CA 92697 United States
AB: Land surface modeling has led to significant advances in the understanding the role of the terrestrial hydrologic cycle in the Earth system. However, the representation of land surface of in these modeling approaches suffers from drawbacks such as lack of representation of terrestrial surface water bodies. These water bodies play an important role in the hydrological and biogeochemical cycles and thus should be included in the computation of the hydrologic budget. To emphasize the contribution of surface water bodies towards the total terrestrial evaporative flux, we present global estimates of monthly evaporation rates from lakes, rivers and reservoirs. The identification of lakes, river and reservoirs follows from the Global Lakes and Wetlands Database (Lehner and Doll [2004]). Evaporation is estimated using the Penman formulation, using observed global net radiation and temperature data from Langley Surface Radiation Budget data. We compare our estimates with those from other studies for different hydrologic regions of the world (such as the Mississippi and the Congo basins).
DE: 1818 Evapotranspiration
DE: 1847 Modeling
DE: 1876 Water budgets
SC: Hydrology [H]
MN: Fall Meeting 2005