基于现场观测数据的卫星雷达高度计海面风速和有效波高真实性检验方法研究  

Research on Validation Methods of Satellite Radar Altimeter Retrieved Sea Surface Wind Speed and Significant Wave Height Using In-situ Data

作　　者：叶小敏[1] 林明森[1] 宋庆君[1] 

机构地区：[1]国家海洋局国家卫星海洋应用中心,北京100081

出　　处：《遥感技术与应用》2014年第1期26-32,共7页Remote Sensing Technology and Application

基　　金：国家863计划项目"海洋遥感定标检验技术研究"(2008AA09A403;2008AA09A401);国家海洋局青年海洋科学基金(2012427);国家自然科学基金青年科学基金项目(41006112)

摘　　要：卫星遥感产品定量化应用前需通过真实性检验。卫星雷达高度计可观测海面风速大小和有效波高等海洋动力环境参数,而对其进行真实性检验存在不同的时空匹配方法。使用3种不同的时空匹配方法,利用美国国家浮标数据中心(NDBC)现场观测数据对2011年的Jason-2海面风速和有效波高产品进行了检验。Jason-2海面风速大小和有效波高的均方根误差分别为1.28m/s和0.28m,同时结果表明:采用卫星高度计海面风速大小(有效波高)和同步的现场观测数据在一定时间(1h)和空间(50km)限制条件下进行对比检验,可以得到合理的高度计海面风速大小和有效波高精度评价结果。Jason-2卫星高度计海面风速大小和有效波高的精度与探测海域有关,其精度在墨西哥湾与西大西洋海域相对较高。Validation is necessary before quantitative application of the satellite remote sensing products, Satellite radar altimeter can detect marine dynamic environment parameters, including sea surface wind speed and significant wave height,which can be verified with different space and time matching methods, Jason-2 satellite altimeter sea surface wind speed and significant wave height products detected in 2011 has been verified using in-situ data downloaded from National Date Buoy Center （NDBC） by three different space and time matching methods. The RMSE of Jason-2 sea surface wind speed and significant wave height are 1.28 m/s and 0.28 m,respectively. The result indicated that the reasonable verification results of satel- lite altimeter sea surface wind speed and significant wave height can be calculated in certain time （1 h） and space （50 km） limit between satellite and in-situ data; and the accuracy of Jason-2 sea surface wind speed and significant wave height which is relatively higher in the Gulf of Mexico and the western Atlantic Ocean is different in different ocean.

关 键 词：高度计 海面风速 有效波高 真实性检验 

分 类 号：P714[天文地球—海洋科学]