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Seasat over-land scatterometer data. I. Global overview of the Ku-band backscatterer coefficients

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2 Author(s)
R. G. Kennett ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; F. K. Li

Statistics on the backscatter coefficient σ0 from the Ku-band Seasat-A Satellite Scatterometer (SASS) collected over the world's land surfaces are presented. This spaceborne scatterometer provided data on σ0 between latitude 80° S and 80° N at incidence angles up to 70°. The global statistics of vertical (V) and horizontal (H) polarization backscatter coefficients for 10° bands in latitude are presented for incidence angles between 20° and 70° and compared with the Skylab and ground spectrometer results. Global images of the time-averaged V polarization σ0 at a 45° incidence angle and its dependence on the incidence angle are presented and compared to a generalized map of the terrain type. Global images of the differences between the V an H polarization backscatter coefficients are presented and discussed. The most inhomogeneous region, which contains the deserts of North Africa and the Arabian Peninsula, is studied in greater detail and compared with the terrain type

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IEEE Transactions on Geoscience and Remote Sensing  (Volume:27 ,  Issue: 5 )