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WIND SPEED RETRIEVING FOR COMBINED OBSERVATIONS OF SCATTEROMETER AND RADIOMETER ONBOARD HY-2A FOR TYPHOONS USING NEURAL NETWORK
Xu, Xingou; Dong, Xiaolong; Zhang, Lei; Zhu, Di; Lang, Shuyan
作者部门微波遥感部
2017
会议名称IEEE International Geoscience & Remote Sensing Symposium
会议录名称2017 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
页码2164-2166
会议日期JUL 23-28, 2017
会议地点Fort Worth, TX
ISSN号2153-6996
ISBN号978-1-5090-4951-6
摘要In typhoon conditions, air-sea interactions are fierce, the wind speeds are quite high and usually tangled with complex rains. Under such circumstances, the combined observations of scatterometer and radiometer would be able to provide good information although traditional wind filed retrieving methods for them, i. e. MLE based on GMF (Geographical Modelling Function) for scatterometer and RTM(Radiative Transfer Method) which are originated from low or median wind conditions will not be applicable. In this paper, a neural network was employed to combine the observations of the two sensors onboard HY-2A satellite: radiometer (HRAD) and scatterometer (HSCAT) to achieve wind speed retrieving under typhoon conditions. The network was trained by GRAPS (global/regional assimilation and prediction system) data used as true values of wind speeds in typhoons. The established network was verified by data excluded from training data set. Results show that the wind speeds obtained from the network are better than the products of HY-2A compared to GRAPS data. The research of this paper has provided a clue of retrieving typhoon wind speeds for HY-2A products and for the data processing of coming HY satellite series, though further work on wind direction obtain, data comparison between different kinds of assimilation and perdition systems and the test of this method on other scatterometer and radiometer data are to be done in the near future.
关键词Typhoon Wind Speed Retrieving Scatterometer Radiometer Combined Observation Hy-2a
收录类别CPCI
语种英语
文献类型会议论文
条目标识符http://ir.nssc.ac.cn/handle/122/6279
专题微波遥感部
推荐引用方式
GB/T 7714
Xu, Xingou,Dong, Xiaolong,Zhang, Lei,et al. WIND SPEED RETRIEVING FOR COMBINED OBSERVATIONS OF SCATTEROMETER AND RADIOMETER ONBOARD HY-2A FOR TYPHOONS USING NEURAL NETWORK[C],2017:2164-2166.
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