海洋二号卫星散射计风场产品真实性检验及分析-海洋预报

海洋二号卫星散射计风场产品真实性检验及分析

单位：5111信箱, 北京100094

分类号：P732

出版年·卷·期（页码）：2014·31·第四期（47-53）

摘要：

利用国际海-气综合数据集（ICOADS）中的海面风场实测数据作为真实值,对海洋二号卫星散射计风场产品进行真实性检验,得到初步结论：（1）在中、低风速条件下,海洋二号散射计风速与ICOADS实测风速具有较好一致性,但在较高风速条件下海洋二号散射计会出现风速低估现象；（2）海洋二号散射计风向与ICOADS实测风向的误差主要集中在-15°-15°范围内,在低风速条件下,海洋二号散射计与ICOADS两者风向存在较大偏差,风向多解也主要发生在低风速时；（3）在2-24m/s风速条件下,剔除超过3个标准偏差风速样本后,海洋二号与ICOADS两者风速的平均绝对误差为1.36m/s,均方根误差为1.92m/s,若忽略风向多解的影响,两者风向的平均绝对误差为14.98°,均方根误差为20.21°。

In this paper, the validation of wind field products of HY-2 is done by using the measured wind field data of ICOADS as a real value, which are collected from May 2012 to May 2013. Three conclusions are obtained: (1) In conditions of medium and low wind speed, it shows good linear relationship between HY-2 wind speed data and ICOUDS wind speed data, while in high wind speed conditions, the HY-2 scatterometer tends to underestimate the wind speed ; (2) In low wind speed conditions, the deviation of the wind direction between HY-2 scatterometer and the ICOADS dataset falls mainly in the range of -15° -15°, there are big deviations between them and there are multi solutions to wind direction at the same time. In each direction, the probability of multi solutions to wind direction is the same in general, about 0.14; (3) In the 2-24 m/s range of wind speed, when eliminating over 3 standard deviation wind samples, the mean absolute error of the wind speed between HY-2 scatterometer and the ICOADS dataset is 1.36 m/s, and the root mean square error is 1.92 m/s. If the effect of the multi-solutions to wind direction is ignored, the mean absolute error between the wind direction is 14.98° and the root mean square error is 20.21°.

参考文献：

[1] 苗俊刚, 刘大伟. 微波遥感导论[M]. 北京: 机械工业出版社, 2012.
[2] 冯士筰, 李风岐, 李少箐. 海洋科学导论[M]. 北京: 高等教育出版社, 1999.
[3] Freilich M H, Dunbar R S. The accuracy of the NSCAT 1 vector winds: comparison with National Data Center buoys[J]. J Geophys Res, 104(C5): 11231-11246.
[4] Chelton D B, Freilich M H. Scatterometer-based assessment of 10-winds analyses from the operational ECMWF and NCEP numerical weather prediction models[J]. Monthly Weather Review, 2005, 133(2): 409-427.
[5] Naoto E, Hans C B, Michael J C. Evaluation of wind vectors observed by QuickSCAT/SeaWinds using ocean data[J]. Journal of Atmospheric and Oceanic Technology, 2002, 19(12): 2049-2062.
[6] 张婷, 张杰, 杨俊钢. 卫星散射计与海面平台所测的风场数据比较[J]. 海洋学研究, 2013, 31(2): 45-51.
[7] 穆松宁. 海-陆-气常规数据说明手册（2011 版）[R]. 中国科学院大气物理研究所, 2011: 73-74.
[8] 孟雷, 何宜军, 伍玉梅. 基于SSMI数据的神经网络方法反演海面风速[J]. 高技术通讯, 2006, 16(7): 763-770.
[9] Seelye Martin. 海洋遥感导论[M]. 蒋兴伟等译, 北京: 海洋出版社, 2008.
[10] 殷晓斌, 王震占. 微波传感器遥感台风对海洋影响的初步分析
[R]. 2007 年全国微波毫米波会议论文集（下册）, 2007, 2: 1739-1742.

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