Journal article
Calibration and validation of HY-2 altimeter wave height
Q Liu, AV Babanin, C Guan, S Zieger, J Sun, Y Jia
Journal of Atmospheric and Oceanic Technology | AMER METEOROLOGICAL SOC | Published : 2016
Abstract
Hai Yang-2 (HY-2) satellite altimeter measurements of significant wave height (Hs) are analyzed over the period from 1 October 2011 to 6 December 2014. They are calibrated and validated against in situ buoys and other concurrently operating altimeters: Jason-2, CryoSat-2, and Satellite with Argos and ALtiKa (SARAL). In general, the HY-2 altimeter measurements agree well with buoy measurements, with a bias of -0.22m and a root-mean-square error (RMSE) of 0.30 m. When the reduced major axis (RMA) regression procedure was applied to the entire period, the RMSE was reduced by 33% to 0.2 m. A further comparison with other satellite altimeters, however, revealed two additional features of HY-2 Hs ..
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Awarded by Office of Naval Research
Funding Acknowledgements
Q. Liu acknowledges the fellowship supported by the China Scholarship Council (CSC). Radar altimeter data were kindly provided by NSOAS, AVISO, and NOAA/NESDIS. The in situ buoy observations were provided by NDBC and NODC. The wave model output provided by the Ifremer IOWAGA project is highly acknowledged. C. Guan and J. Sun appreciate the support from the National Natural Science Foundation of China (Grants 41276010, 41376010 and U1406401). AVB acknowledges support from the Australian Research Council Discovery Grant DP130100227 and the U.S. Office of Naval Research Grant N00014-13-1-0278. We would like to thank the two anonymous reviewers and the editor for their comments and suggestions that have improved this paper.