船测资料与智利外海QuikSCAT风场比较分析  

Comparison between the Fishing Vessels and QuikSCAT Scatterometer Wind Data of the Offshore Chile

作　　者：刘慧[1] 胡松[1,2] 邹晓荣[2] 

机构地区：[1]上海海洋大学海洋科学学院海洋生态与环境实验室,上海201306 [2]上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306

出　　处：《遥感技术与应用》2012年第5期763-769,共7页Remote Sensing Technology and Application

基　　金：东南太平洋西部公海智利竹筴鱼探捕项目(D-8005-10-0202);上海市重点学科建设项目(S30702);上海市科委重点项目(09320503700);上海海洋大学国际合作项目(A-3605-12-0001)

摘　　要：利用大洋渔船在智利外海观测的风场资料与QuikSCAT 10m散射风原始轨道资料L3产品进行了比较分析。两种资料的偏差统计特征显示:①智利外海船测风速总体上高于QuikSCAT风速,船测风向总体上偏于QuikSCAT风向的左侧;②智利外海船测风场资料与QuikSCAT散射风的风速偏差集中分布在-1～1m/s之间;风向偏差主要集中分布于-60°～-10°之间,其次为10°～60°和-10°～10°段;③智利外海白天的风速偏差特征值均小于夜晚,昼、夜风向平均偏差数值差别很大,但昼、夜风向平均绝对偏差、均方根偏差数值相差不大;④2008年智利外海船测风场资料与QuikSCAT散射风的偏差大于其他年份的整体平均值,在高风速段风速偏差尤为明显。This paper compares the L3 product of QuikSCAT 10 m Scatterometer Winds with the fishing vessels＇ wind data. The statistical biases between the two sets of data show that：① in general, the fishing vessels＇ wind speed of offshore Chile is higher than QuikSCAT,and the wind direction of fishing vessels is on the left side of the QuikSCAT ;②the wind speed bias between the fishing vessels and QuikSCAT wind data is concentrated on the range of -- 1 - 1 m/s, and the wind direction bias is mainly in the range of -60°-10°,with minor range of 10°-60° and --10°-10°;③ the wind speed deviation characteristic value in the day time is better than that at night,and there is distinct difference of wind direction mean bias be- tween day and night ,but the absolute bias and root mean square bias of wind direction are similar;④ and the biases between the fishing vessels＇ winds and QuikSCAT wind data in 2008 are larger than the average of other years, especially for the wind speed bias of high wind speed section.

关 键 词：智利外海 QUIKSCAT 船测 风场 

分 类 号：P47[天文地球—大气科学及气象学]