Cross-calibration of HY-2A with Jason-2 and CryoSat-2
Martin-Puig, Cristina1; Martinez-Val, Bernat1; Yang, Jungang2
1isardSAT, SPAIN; 2First Institute of Oceanography,SOA, CHINA
HaiYang – 2A (HY-2A) is the first of a new series of oceanographic Chinese satellites. Since its launch in late summer 2011 the mission offers a new possibility for continuity of conventional altimetry observations. Very few results of HY-2A performance have been presented at international conferences. It was just recently, at the past conference twenty years of satellite altimetry, when Lifeng Bao from the State Key Laboratory of Geodesy and Earth’s Dynamics (Chinese Academy of Science) presented for the first time a few initial performance results of this satellite. We aim at extending the work initiated by Lifeng Bao by cross-calibrating the HY-2A range measurements with Jason-2 and CryoSat-2 (CS2), concentrating on data from two well known Chinese Seas: the Bohai and Yellow Seas. Note that CS2 is operating in Synthetic Aperture Radar Mode (SARM) for these regions, thus reduced SAR mode techniques will be investigated and implemented to undertake the cross-calibration of CS2 with HY-2A. The mission has been offering data to scientific users since last summer 2012, the work here presented focuses on processing one-year of HY-2A data (from summer 2012 to summer 2013). Cross-overs of HY-2A along this period of time with Jason-2 and CS2 will be investigated and data quality results reported for these two specific regions.