Absolute Calibration of the TOPEX/POSEIDON Altimeters using UK Tide Gauges, GPS, and Precise, Local Geoid-Differences

摘要: This article describes an "absolute" calibration of TOPEX/POSEIDON (T/P) altimeter bias using UK tide gauges equipped with Global Positioning System (GPS) receivers. The method is extension earlier work the Newhaven gauge in English Channel. However, present analysis extends research to a number around and incorporates several improvements. time-averaged TOPEX POSEIDON biases are obtained precision approximately 2 3 cm, respectively. complements on determination by other groups T/P Science Working Team can, principle, be applied at locations for which precise, local geoid-differences available. relatively sparse data set has been used as test our ability perform absolute upcoming Jason-1 altimetry soon possible after launch.