卫星遥感海面风场的进展

Advance of Sea Surface Wind Speed Field from Satellite Remote Sensing

空间技术的发展使得卫星遥感成为获取海面风速信息的重要手段。对卫星微波遥感海面风场的各种传感器的性能、特点等作了较全面地评述。

Conventional observations of sea surface wind speeds are provided by ships,buoys,coastal or island station,but they have limits in time and space which hinder further study of vast ocean area.Satellite remote sensing,especially microwave remote sensing,is becoming main method to measure sea surface wind with the development of space technology since wind speeds derived from satellite microwave sensors have the advantages in spatial and temporal resolutions.There are mainly three kinds of microwave sensors used to detect sea surface winds at present,they are scatterometer,radiometer and altimeter.The properties and features of these three microwave sensors are compared,and two methods to obtain the sea surface wind fields in large scale,one of which is comprehensive analysis of multi source remote sensing information,another is numerical assimilation are indicated in this paper.