摘要
利用MODIS数据可见光波段b1、近红外波段b2和中红外波段b19,获得所需要的两个基本参数:地表比辐射率和大气水分含量,然后对于热红外波段b31,采用Jiménez-Muoz和Sobrino的普适性单通道算法反演地表温度。最后以长株谭地区为研究区,研究结果表明,这一方法能获得较为合理的地表温度。
First of all, the surface emissivity was computed from the band 1 and band 2 of MODIS data, and the atmospheric water content was computed from the band 2 and band 19. Then in conjunction with the band 31 ,the values of land surface temperature were derived by a generalized single - channel method developed by Jim nez - Mu oz and Sobrino. At last, this method was applied to Chang - Zhu - Tan area and the result shows that the method can yield a reasona- ble estimation of land surface temperature .
出处
《城市勘测》
2008年第5期97-100,共4页
Urban Geotechnical Investigation & Surveying
关键词
地表温度
MODIS
大气水分含量
地表比辐射率
Land surface temperature
MODIS
Atmospheric water content
Land surface emissivity
