基于HY-2A微波散射计海面风场资料的台风风剖面信息提取研究  

Research on typhoon wind profile information extraction based on sea surface wind field data of HY-2A microwave scatterometer

作　　者：张路[1,2,3] 胡潭高 张毅[4] 张登荣 李瑶 沈黎达[1,2] Zhang Lu;Hu Tangao;Zhang Yi;Zhang Dengrong;Li Yao;Shen Lida(Institute of Remote Sensing and Earth Sciences,Hangzhou Normal University,Hangzhou 311121,China;Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change,Hangzhou 311121,China;Scientific Research Academy of Guangxi Environmental Protection,Nanning 530022,China;Key Laboratory of Space Ocean Remote Sensing and Application,Ministry of Natural Resources,Beijing 100081,China)

机构地区：[1]杭州师范大学遥感与地球科学研究院,浙江杭州311121 [2]浙江省城市湿地与区域变化研究重点实验室,浙江杭州311121 [3]广西壮族自治区环境保护科学研究院,广西南宁530022 [4]自然资源部空间海洋遥感与应用研究重点实验室,北京100081

出　　处：《海洋学报》2020年第1期102-112,共11页

基　　金：国家重点研发计划（2017YB0502800,2017YFB0502805）;浙江省基础公益研究计划（LY19D010004,LGF18D010005）;杭州市农业与社会发展科研自主申报项目（20191203B19）

摘　　要：台风风剖面信息是直观反映与台风中心不同距离的各点与平均风速关系的曲线,它是确定各级台风风圈范围的重要基础。本文利用HY-2A微波散射计海面风场资料,结合Holland风场模型提出了一种新的台风风剖面信息提取方法,并选取2012–2017年期间16期典型台风进行应用。结果表明:34 kt与50 kt风圈半径的平均均方根误差为37.6 km与18.3 km,该方法具有较好的适用性和精度。本研究对于描述台风结构特征及潜在的破坏力和台风可能的影响范围具有一定的现实意义。The typhoon wind profile information is a curve that directly reflects the relationship between the points at different distances from the typhoon center and the average wind speed. It is an important basis for determining the wind radius at different speed. In this paper, a new typhoon wind profile information extraction method is proposed by using the HY-2 A microwave scatterometer sea surface wind field data and the Holland wind field model.We selected 16 typical typhoons during 2012-2017 for application, the results show that the average root mean square error of the 34 kt and 50 kt wind radii is 37.6 km and 18.3 km. This method has good applicability and accuracy. This study has certain practical significance for describing the structural characteristics of typhoon and its potential destructive power and possible range of typhoon.

关 键 词：海洋二号卫星 台风形状系数 风圈半径 散射计风场产品 台风风场模型 

分 类 号：P732.3[天文地球—海洋科学] P717