Submitted to: International Geoscience and Remote Sensing Symposium Proceedings
Publication Type: Abstract only
Publication Acceptance Date: 3/19/2004
Publication Date: 9/20/2004
Citation: Jackson, T.J., Bindlish, R., Gasiewski, A., Stankov, B., Klein, M. 2004. Polarimetric scanning radiometer C and X band microwave observations during SMEX03 [abstract]. International Geoscience and Remote Sensing Symposium Proceedings. 2004 CD ROM. Interpretive Summary:
Technical Abstract: Soil Moisture Experiment (SMEX03) was the second in a series of field campaigns using the NOAA Polarimetric Scanning Radiometer (PSR/CX) to develop and validate soil moisture retrieval algorithms for the Advanced Microwave Scanning Radiometer on the Aqua and ADEOS-II satellites. The primary objectives of PSR/CX during SMEX03 were: 1) calibration and validation of AMSR brightness temperature observations over different climate/vegetation regions of the U.S. (Alabama, Georgia, Oklahoma), 2) to check for the presence of Radio Frequency Interference (RFI), 3) comparison of X-band observations from TRMM Microwave Imager (TMI), AMSR and PSR, and 4) explore the potential for the development of soil moisture retrieval algorithms using C and X band imagery in diverse landscapes. The dominant land use classes in the different SMEX03 domains were: 1) Georgia - agricultural with cotton and peanuts, 2) Alabama ' half grassland and half forest, 3) Oklahoma North ' Winter wheat, 4) Oklahoma South ' Pasture. The SMEX03 campaign consisted of 112 flightlines at high altitude resulting in 28 mapping domains flown between June 24-July 18, 2003 (5 over Alabama, 3 over Georgia, 10 over Oklahoma North and 10 over Oklahoma South). Each mapping domain is about 100 km x 50 km (8 Ease Grid boxes), providing an excellent area for calibration and validation of AMSR-E observations. Each data set has been carefully processed to remove erroneous measurements resulting from instrument and external error sources. These data are re-sampled to uniform grids, which are consistent day to day. In general, rainfall during the campaign was less than hoped for, especially in Oklahoma. Observations obtained over Alabama include a wide range of soil moisture and vegetation conditions. Results of comparisons between the PSR and AMSR and the use of microwave remote sensing to estimate soil moisture over wide range of vegetation and soil moisture conditions are presented.