Absolute Calibration of Jason-1 and Envisat Altimeter Ku-Band Radar Cross Sections from Cross Comparison with TRMM Precipitation Radar Measurements
نویسندگان
چکیده
منابع مشابه
Radar Altimeter Absolute Calibration Using GPS Water Level Measurements
........................................................................................................................iii PREFACE............................................................................................................................ v ACKNOWLEDGMENT.....................................................................................................vii
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The environmental satellite ENVISAT was successfully launched by the European Space Agency ESA in March 2002 and carries among other sensors a radar altimeter which is capable of measuring the height between sea surface and satellite with a precision of a few centimetres. Unfortunately, radar altimeters of this kind exhibit a bias which cannot be determined à priori with help of laboratory meas...
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A procedure to accurately resample spaceborne and ground-based radar data is described, and then applied to the measurements taken from the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) and the ground-based Weather Surveillance Radar-1988 Doppler (WSR-88D or WSR) for the validation of the PR measurements and estimates. Through comparisons with the well-calibrated, non-atte...
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An algorithm for the retrieval of surface wind speed from Ku-band altimeter backscatter coefficient is proposed. The algorithm was derived using two-month worth of ENVISAT altimeter backscatter data collocated with ECMWF model and buoy wind speeds. The algorithm was extensively verified for ENVISAT, ERS2 and Jason-1 altimeters. The algorithm performance is better than the “modified Chelton-Went...
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The mission RA-2 has an essential role to play in the Envisat mission, as indicated in Table 1. Operating over oceans, its data can be used to monitor seasurface topography, thereby supporting research into ocean circulation and sea-level change, as well as providing observations of the sea floor structure or shape, and marine geoid characteristics. It will also be possible to determine near-se...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Oceanic Technology
سال: 2005
ISSN: 1520-0426,0739-0572
DOI: 10.1175/jtech1791.1