摘要
利用NCEP风场产品和dropsonde探测资料,对中国近海ASCAT全场和单点的风速反演精度进行验证分析。研究发现ASCAT反演风场与NCEP风场的风速、风向平均绝对偏差分别为2.06 m/s和21.98°;均方根误差分别为2.87 m/s和34.29°。两者风速反演精度较一致,风向误差相对偏大。ASCAT反演风场与dropsonde探测资料的风速、风向平均绝对偏差分别为1.55 m/s和3.43°;均方根误差分别为1.73 m/s和4.15°。ASCAT资料可以较好的反演台风风场。
Based on NCEP wind data and dropsonde observational data, the accuracy of ASCAT wind products in the China Sea is validated. The results indicates that the mean absolute differences between ASCAT and NCEP data were 2.06 m/s （wind speed） and 21.98°（wind direction） based on the 845 matching samples. Meanwhile, the root-mean-square differences were 2.87 m/s （wind speed） and 34.29°（wind direction）. The wind speed retrieval accuracy from ASCAT is close to NCEP while the wind direction difference is relatively large. The mean abso- lute differences between ASCAT and dropsonde data were 1.55 m/s （wind speed） and 3.43° （wind direction） on the basis of 7 matching samples. The root-mean-square differences between them were 1.73 m/s （wind speed） and 4.15°（wind direction）. Hence, the ASCAT wind products well retrieval the tropical cyclones wind field.
出处
《海洋预报》
北大核心
2013年第4期27-33,共7页
Marine Forecasts
基金
国家自然科学基金(41276018)和(41275113)
