HR: 14:25h
AN: H23H-04    [Abstracts]
TI: Validation of AMSR-derived soil moisture: Lessons from SMEX02, SMEX03 and SMEX04
AU: * Lakshmi, V
EM: vlakshmi@geol.sc.edu
AF: University of South Carolina, Department of Geological Sciences, Columbia, SC 29208 United States
AU: Jackson, T J
EM: tjackson@hydrolab.arsusda.gov
AF: Hydrology and Remote Sensing Laboratory, 104 Bldg. 007 BARC-West United States Department of Agriculture, Beltsville, MD 20705 United States
AU: Njoku, E G
EM: eni.g.njoku@jpl.nasa.gov
AF: Water and Carbon Cycles Group, Jet Propulsion Laboratory, M/S 300-233 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Bolten, J D
EM: jbolten@geol.sc.edu
AF: University of South Carolina, Department of Geological Sciences, Columbia, SC 29208 United States
AU: Guijarro, L N
EM: lguijarro@geol.sc.edu
AF: University of South Carolina, Department of Geological Sciences, Columbia, SC 29208 United States
AB: The Advanced Microwave Scanning Radiometer has provided us with multi-channel data from mid 2002 to present. Numerous field campaigns have been conducted to carry out simultaneous measurements of soil moisture on the ground and by using aircraft-borne radiometers. These experiments have been carried out in three differing hydro-climatic regimes and land cover. Soil Moisture Experiment (SMEX) 2002 (SMEX02) was conducted in the Walnut river watershed in Iowa with predominantly corn and soyabean canopy. SMEX03 was conducted in the humid and highly vegetated region of Little River Georgia and SMEX04 was carried out in Walnut Gulch Arizona and Sonoran region in Mexico. In this paper we compare the soil moisture collected in-situ with the standard AMSR products. We also use the collected in-situ data such as soil moisture, surface temperature, vegetation water content, surface roughness and bulk density to input into a radiative transfer model to simulate the brightness temperatures at the satellite and aircraft radiometer for comparison. Insights into the forward problem will help us in the retrieval process. The comparisons from the three sites are analyzed and compared with each other to see if there is a correlation between the hydro-climatic regimes and land cover and the results.
DE: 1833 Hydroclimatology
DE: 1836 Hydrological cycles and budgets (1218, 1655)
DE: 1855 Remote sensing (1640)
DE: 1866 Soil moisture
SC: Hydrology [H]
MN: Fall Meeting 2005