Study on the impact of atmosphere to land surface brightness temperature by applying IR data of geostationary satellite

The atmospheric weaken revised formula is obtained by simplifying split window algorithm. Land surface brightness temperature of the six monitoring regions of China is researched by using FY 2C geostationary satellite IR data (211 images from September 18, 2007 to August 15, 1008) with the above formula, the result shows that the impact of atmosphere to thermal infrared transmission is from -12K to 8 K. This paper inversed land surface brightness temperature with the FY geostationary satellite image at 4:02 am, October 4, 2007 excluding the impact of atmosphere, the image was more distinct after inversion than that before inversion.