| ZHAO Dongliang,LI Shuiqing,SONG Chaoyang. 2012. The comparison of altimeter retrieval algorithms of the wind speed and the wave period. Acta Oceanologica Sinica, (2):1－9 |
| The comparison of altimeter retrieval algorithms of the wind speed and the wave period |
| The comparison of altimeter retrieval algorithms of the wind speed and the wave period |
| Received:June 26, 2011 Revised:December 16, 2011 |
| DOI：10.1007/s13131-012-0201-4 |
| Key words:altimeter wind speed wave period wave age significant wave height |
| 中文关键词: altimeter wind speed wave period wave age significant wave height |
| 基金项目:The National Natural Science Foundation of China under contract Nos 41076007 and 40676014; the National Basic Research Program of China under contract No. 2009CB421201; the Program of Introducing Talents of Discipline to Universities of China under contract No. B07036. |
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| Abstract: |
| With the launch of altimeter, much effort has been made to develop algorithms on the wind speed and the wave period. By using a large data set of collocated altimeter and buoy measurements, the typical wind speed and wave period algorithms are validated. Based on theoretical argument and the concept of wave age, a semi-empirical algorithm for the wave period is also proposed, which has the wave-period dimension, and explicitly demonstrates the relationships between the wave period and the other variables. It is found that Ku and C band data should be applied simultaneously in order to improve either wind speed or wave period algorithms. The dual-band algorithms proposed by Chen et al. (2002) for the wind speed and Quilfen et al. (2004) for the wave period perform best in terms of a root mean square error in the practical applications. |
| 中文摘要: |
| With the launch of altimeter, much effort has been made to develop algorithms on the wind speed and the wave period. By using a large data set of collocated altimeter and buoy measurements, the typical wind speed and wave period algorithms are validated. Based on theoretical argument and the concept of wave age, a semi-empirical algorithm for the wave period is also proposed, which has the wave-period dimension, and explicitly demonstrates the relationships between the wave period and the other variables. It is found that Ku and C band data should be applied simultaneously in order to improve either wind speed or wave period algorithms. The dual-band algorithms proposed by Chen et al. (2002) for the wind speed and Quilfen et al. (2004) for the wave period perform best in terms of a root mean square error in the practical applications. |
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