摘要
介绍FY-2D卫星OLR反演模式的建立过程以及模式与NOAA卫星OLR反演模式的相互对比,包括:地球大气红外辐射传输方程,全球3812条大气廓线的大气顶射出辐射率、射出长波辐射通量密度的模拟计算,3812条廓线FY-2D窗区通道1、2、水汽通道的通道辐射率模拟计算,通道辐射率的临边变暗订正关系式的确立、3个通道波段的窄波段辐射通量密度的模拟计算。通过3812条廓线的窄波段辐射通量密度与OLR的X-Y坐标散点图,建立OLR回归关系式;并通过NOAA-17 AVHRR通道5 OLR反演模式与FY-2D窗区通道2 OLR反演模式形式的互比,得出两星的OLR反演模式接近,给出2007年2~4月OLR产品个例和产品精度分析。
A primary description is made of the process of establishing the FY-2D OLR inverse model,and the model comparison is conducted between NOAA and FY-2D.The earth-atmosphere infrared radiation transfer equation is introduced.The radiances and OLR at the top of atmosphere for 3812 sounding profiles,the channel radiance for FY-2D window channel 1,2 and water vapor channel,and the narrow-band radiative flux of three FY-2D channels for 3812 soundings are calculated,and the limb-darken correction equations for the ...
出处
《气象科技》
2008年第5期634-638,共5页
Meteorological Science and Technology
基金
国家卫星气象中心FY-2D静止气象卫星地面应用系统工程资助
