| Calibration and validation of reprocessed HY-2A altimeter wave height measurements using data from Buoys, Jason-2, Cryosat-2, and SARAL/AltiKa | |
| Jiang, Maofei; Xu, Ke; Liu, Yalong; Jiang, Maofei (jiangmaofei1@163.com) | |
| Department | 微波遥感部 |
| Source Publication | Journal of Atmospheric and Oceanic Technology
 |
| 2018 | |
| Volume | 35Issue:6Pages:1331-1352 |
| ISSN | 0739-0572 |
| Language | 英语 |
| Abstract | The Haiyang-2A (HY-2A) satellite is China's first ocean dynamic environment satellite, and the radar altimeter is one of its main payloads. In this study the HY-2A altimeter sensor interim geophysical dataset records (SIGDR) data are reprocessed to obtain better significant wave height (Hs) measurements over a period of more than four years (from 1 October 2011 to 15 March 2016). The reprocessed HY-2A Hsmeasurements are calibrated and validated using National Data Buoy Center (NDBC) buoys and several operating altimeters: Joint Altimetry Satellite Oceanography Network-2 (Jason-2), CryoSat-2, and Satellite with Argos Data Collection System and Ka-Band Altimeter (SARAL/ALtiKa) The final results of buoys and cross-altimeter comparisons show that the accuracy of the reprocessed HY-2A Hsmeasurements is significantly improved with respect to the Hsmeasurements in the operational HY-2A interim geophysical data record (IGDR) publicly distributed by the National Satellite Ocean Application Service (NSOAS), State Oceanic Administration (SOA) of China. Compared with the NDBC Hsmeasurements, the reprocessed HY-2A Hsmeasurements show a root-mean-square error (RMSE) of 0.215 m with a positive bias of 0.117 m. After calibrating with the two-branched corrections, the RMSE for the reprocessed HY-2A Hsmeasurements is reduced to 0.173 m, which is lower than those for the calibrated HY-2A IGDR, Jason-2, Cryosat-2, and SARAL measurements with an RMSE of 0.278, 0.233, 0.239, and 0.184 m, respectively. Long-term validation of the altimeter Hsmeasurements shows that the reprocessed HY-2A Hsmeasurements after calibration are stable with respect to the buoys and three other altimeters over the entire period. The reprocessed HY-2A Hsmeasurements are expected to improve the practical applicability of HY-2A Hsmeasurements significantly. © 2018 American Meteorological Society. |
| Indexed By | EI |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/6369 |
| Collection | 微波遥感部 |
| Corresponding Author | Jiang, Maofei (jiangmaofei1@163.com) |
| Recommended Citation GB/T 7714 | Jiang, Maofei,Xu, Ke,Liu, Yalong,et al. Calibration and validation of reprocessed HY-2A altimeter wave height measurements using data from Buoys, Jason-2, Cryosat-2, and SARAL/AltiKa[J]. Journal of Atmospheric and Oceanic Technology,2018,35(6):1331-1352. |
| APA | Jiang, Maofei,Xu, Ke,Liu, Yalong,&Jiang, Maofei .(2018).Calibration and validation of reprocessed HY-2A altimeter wave height measurements using data from Buoys, Jason-2, Cryosat-2, and SARAL/AltiKa.Journal of Atmospheric and Oceanic Technology,35(6),1331-1352. |
| MLA | Jiang, Maofei,et al."Calibration and validation of reprocessed HY-2A altimeter wave height measurements using data from Buoys, Jason-2, Cryosat-2, and SARAL/AltiKa".Journal of Atmospheric and Oceanic Technology 35.6(2018):1331-1352. |
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| 20183561331-1352.pdf（10278KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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