Removing the impact of wind direction on remote sensing of sea surface salinity  

作　　者：YIN Xiaobin LIU Yuguang ZHANG Hande 

机构地区：[1]Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003, China [2]North China Sea Branch of the State Oceanic Administration, Qingdao 266033, China

出　　处：《Chinese Science Bulletin》2006年第11期1368-1373,共6页

摘　　要：Using the small-slope approximation model of microwave emission of rough sea surface, the impacts of sea surface wind on brightness tem- perature variations generated by the surface rough- ness, i.e. ?Th,v, are investigated. Here ?T denotes the brightness temperature variation, and “h” and “v” denote the horizontal and vertical polarizations re- spectively. ?Th,v has a linear relation with wind speed, sea surface temperature (SST) and sea surface sa- linity (SSS) respectively. Further more, the impact of wind direction on SSS retrieval, under small inci- dence angles, can be removed by calculating (?Th+?Tv). These characteristics provide simple new ways to develop an SSS retrieval algorithm without wind direction factor.Using the small-slope approximation model of microwave emission of rough sea surface, the impacts of sea surface wind on brightness temperature variations generated by the surface roughness, i.e. ATh, △Th,v, are investigated. Here △T denotes the brightness temperature variation, and ＂h＂ and ＂v＂ denote the horizontal and vertical polarizations respectively. △Th, v has a linear relation with wind speed, sea surface temperature （SST） and sea surface sa- linity （SSS） respectively. Further more, the impact of wind direction on SSS retrieval, under small incidence angles, can be removed by calculating （△Th＋△Tv）. These characteristics provide simple new ways to develop an SSS retrieval algorithm without wind direction factor.

关 键 词：遥感 海面温度 海面盐度 风向 亮度温度 

分 类 号：P7[天文地球—海洋科学]