The GAVDOS Mean Sea Level and Altimeter Calibration Facility: Results for Jason-1 |
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| Authors: | ERRICOS C PAVLIS STELIOS P MERTIKAS |
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| Institution: | 1. Joint Center for Earth Systems Technology University of Maryland , Baltimore County Baltimore, Maryland, USA;2. Laboratory of Geodesy &3. Geomatics Engineering Exploration &4. Positioning Division Technical University of Crete , Chania, Greece |
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| Abstract: | The location of the GAVDOS facility is under a crossing point of the original ground-tracks of TOPEX/Poseidon and the present ones for Jason-1, and adjacent to an ENVISAT pass, about 50 km south of Crete, Greece. Ground observations and altimetry comparisons over cycles 70 to 90, indicate that a preliminary estimate of the absolute measurement bias for the Jason-1 altimeter is 144.7 ± 15 mm. Comparison of Jason microwave radiometer data from cycles 37 and 62, with locally collected water vapor radiometer and solar spectrometer observations indicate a 1–2 mm agreement. |
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| Keywords: | calibration validation radar altimetry sea level GPS water vapor Jason-1 ENVISAT |
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