| 海浪对ASCAT散射计反演风场的影响研究 |
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| 作者姓名： | REN Lin YANG Jingsong ZHENG Gang WANG Juan CHEN Peng |
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| 作者单位： | State Key Laboratory of Satellite Ocean Environment dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China,State Key Laboratory of Satellite Ocean Environment dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China,State Key Laboratory of Satellite Ocean Environment dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China,State Key Laboratory of Satellite Ocean Environment dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China,State Key Laboratory of Satellite Ocean Environment dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| 基金项目： | The National Natural Science Youth Foundation of China under contract Nos 41306191 and 41306192; the National High Technology development Program (863 Program) of China under contract No. 2013AA09A505; the Scientific Research Fund of the Second Institute of Oceanography, State Oceanic Administration of China under contract No. JG1317. |
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| 摘 要： | To improve retrieval accuracy, this paper studies wave effects on retrieved wind field from a scatterometer. First, the advanced scatterometer(ASCAT) data and buoy data of the National Data Buoy Center(NDBC) are collocated. Buoy wind speed is converted into neutral wind at 10 m height. Then, ASCAT data are compared with the buoy data for the wind speed and direction. Subsequently, the errors between the ASCAT and the buoy wind as a function of each wave parameter are used to analyze the wave effects. Wave parameters include dominant wave period(dpd), significant wave height(swh), average wave period(apd) and the angle between the dominant wave direction(dwd) and the wind direction. Collocated data are divided into sub-datasets according to the different intervals of each wave parameter. A root mean square error(RMSE) for the wind speed and a mean absolute error(MAE) for the wind direction are calculated from the sub-datasets, which are considered as the function of wave parameters. Finally, optimal wave conditions on wind retrieved from the ASCAT are determined based on the error analyses. The results show the ocean wave parameters have correlative relationships with the RMSE of the retrieved wind speed and the MAE of the retrieved wind direction. The optimal wave conditions are presented in terms of dpd, swh, apd and angle.
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| 关 键 词： | advanced scatterometer ASCAT wind field wave effects wave parameters |
| 收稿时间： | 2013/3/27 0:00:00 |
| 修稿时间： | 2014/10/8 0:00:00 |
Wave effects on the retrieved wind field from the advanced scatterometer (ASCAT) |
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| REN Lin,YANG Jingsong,ZHENG Gang,WANG Juan,CHEN Peng.Wave effects on the retrieved wind field from the advanced scatterometer (ASCAT)[J].Acta Oceanologica Sinica,2015,34(1):79-84. |
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| Authors: | REN Lin YANG Jingsong ZHENG Gang WANG Juan and CHEN Peng |
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| Institution: | State Key Laboratory of Satellite Ocean Environment dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| Abstract: | To improve retrieval accuracy, this paper studies wave effects on retrieved wind field from a scatterometer. First, the advanced scatterometer (ASCAT) data and buoy data of the National data Buoy Center (NdBC) are collocated. Buoy wind speed is converted into neutral wind at 10 m height. Then, ASCAT data are compared with the buoy data for the wind speed and direction. Subsequently, the errors between the ASCAT and the buoy wind as a function of each wave parameter are used to analyze the wave effects. Wave parameters include dominant wave period (dpd), significant wave height (swh), average wave period (apd) and the angle between the dominant wave direction (dwd) and the wind direction. Collocated data are divided into sub-datasets according to the different intervals of each wave parameter. A root mean square error (RMSE) for the wind speed and a mean absolute error (MAE) for the wind direction are calculated from the sub-datasets, which are considered as the function of wave parameters. Finally, optimal wave conditions on wind retrieved from the ASCAT are determined based on the error analyses. The results show the ocean wave parameters have correlative relationships with the RMSE of the retrieved wind speed and the MAE of the retrieved wind direction. The optimal wave conditions are presented in terms of dpd, swh, apd and angle. |
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| Keywords: | advanced scatterometer ASCAT wind field wave effects wave parameters |
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