ASCAT与HY-2A风场产品在南海的精度评估

发布时间：2017-12-27 14:25

本文关键词：ASCAT与HY-2A风场产品在南海的精度评估　出处：《热带气象学报》2017年05期 　论文类型：期刊论文

【摘要】：基于中国科学院南海海洋研究所提供的2012年1月1日—2013年12月31日西沙自动气象站观测资料以及同时间序列的欧洲中心ERA-interim再分析风场产品,统计了ASCAT和HY-2A散射计风场产品的误差特征,分析散射计资料在南海的适用性。分析得出:ASCAT和HY-2A的风速、风向与自动站一致性高,相关系数均大于0.85,ASCAT风速和风向均方根误差分别为1.57 m/s和15.42°,HY-2A均方根误差略微偏大,分别为2.02 m/s和24.75°;ASCAT和HY-2A散射计与ERA-interim风速、风向有很好的一致性,在不考虑低风速(3 m/s)的条件下,风速均方根误差分别为1.40 m/s和1.56 m/s,风向均方根误差分别为15.09°和17.07°,与设计精度一致,表明ASCAT与HY-2A风场产品在南海是适用的。此外,散射计相对再分析风场的偏差没有明显的季节性变化。
[Abstract]:Analysis of wind field product provided by South China Sea Institute of Oceanology in January 1, 2012 December 31, 2013 in Xisha with the time series observation data, automatic weather station of central Europe based on ERA-interim, ASCAT and HY-2A scattering statistics of the wind field meter product error characteristics, analysis of scatterometer data applicability in the South China sea. Analysis: ASCAT and HY-2A wind speed, wind direction and high consistency of the automatic station, the correlation coefficients were greater than 0.85, ASCAT wind speed and direction the RMS error is 1.57 m/s and 15.42 ~ HY-2A respectively, root mean square error is slightly larger, respectively 2.02 m/s and 24.75 DEG; ASCAT and HY-2A scatterometer and ERA-interim wind speed and wind direction have a good consistency, without considering the low wind speed (3 m/s) under the condition of wind speed, the root mean square error is 1.40 m/s and 1.56 m/s respectively, the root mean square error is 15.09 degrees and 17.07 degrees respectively, consistent with the design accuracy, showed that ASCAT and HY-2A wind field products are applicable in the South China sea. In addition, there is no obvious seasonal variation in the deviation of the scattering meter relative to the reanalysis of the wind field.
【作者单位】：国防科技大学气象海洋学院;新疆维吾尔自治区环境监测总站;中国卫星海上测控部;
【基金】：国家自然科学基金(41275113) 全球变化与海气相互作用专项共同资助
【分类号】：P716.3
【正文快照】： 1引言南海是中国最深、最大的边缘海,为半封闭式海域,是一条非常重要的海上能源运输通道,在经济和国防上都具有重要意义。南海地处亚热带与热带区域,地理位置特殊,有明显的热带季风气候,是台风的多发地,海上大风引起的海浪等海上运动影响着船舶的航行安全及渔业的生产。海面风

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