HR: 1340h
AN: H53E-0531    [Abstracts]
TI: Where the Rubber Meets the Road; Varied Techniques for Measuring the Land-Atmosphere Exchange of Water and Energy in a California Watershed and the Driving Influences on this Exchange
AU: * Kochendorfer, J
EM: jkoch@ucdavis.edu
AF: Department of Atmospheric Science, Univeristy of California Davis, 1 Shields Ave., Davis, CA 95616 United States
AU: Viers, J
EM: jhviers@ucdavis.edu
AF: University of California Davis, University of California Davis Department of Environmental Science and Policy, 1 Shields Ave., Davis, CA 95616 United States
AU: Niswonger, R
EM: rniswon@usgs.gov
AF: U.S. Geological Survey, 333 West Nye Lane, Carson City, NV 89706 United States
AU: Paw U, K
EM: ktpawu@ucdavis.edu
AF: Department of Atmospheric Science, Univeristy of California Davis, 1 Shields Ave., Davis, CA 95616 United States
AU: Haas, E
EM: Edward.Haas@CH2M.com
AF: California State University, 6000 J St. , Sacramento, CA 95819-6043 United States
AU: Reck, R A
EM: rareck@ucdavis.edu
AF: Department of Atmospheric Science, Univeristy of California Davis, 1 Shields Ave., Davis, CA 95616 United States
AB: In conjunction with the Cosumnes Research Group, we performed a field study along the Cosumnes River in California­_s Central Valley. The study included tower-based evapotranspiration estimates, continuous hydrologic measurements, and analysis of remote sensing data. We estimated the effects of phreatophytic evapotranspiration on groundwater from scales as small as an individual stand of trees to as large as the watershed and explored the climactic and hydrologic controls over riparian evapotranspiration. Tower-based evapotranspiration measurements included one eddy covariance tower within a cottonwood forest (Populus fremontii), and one surface temperature/micrometeorological evapotranspiration tower within a willow stand (Salix lasiolepis). The technique used on the surface temperature/micrometeorological evapotranspiration tower was developed and chosen in preference to eddy covariance for a site where a considerable quantity of the riparian ecosystem to atmosphere exchange is advective. Hydrologic techniques included measurements of groundwater depth and volumetric soil moisture. We also examined multitemporal, multiresolution remotely sensed imagery to correlate evapotranspiration rates for a restored cottonwood forest with derived vegetation indices. These indices were evaluated for applicability to other restored riparian habitats within the Cosumnes River Preserve and to help guide future restoration actions as a function of hydrologic connectivity and water demand.
DE: 1631 Land/atmosphere interactions (1218, 1843, 3322)
DE: 1640 Remote sensing (1855)
DE: 1818 Evapotranspiration
DE: 1840 Hydrometeorology
DE: 1890 Wetlands (0497)
SC: Hydrology [H]
MN: Fall Meeting 2005