用MODIS影像和劈窗算法反演山东半岛的地表温度

Retrieval of Land Surface Temperature of Shandong Peninsula Using MODIS Image and Split Window Algorithm

简要介绍了劈窗算法,并对Planck方程进行了线性简化,从而简化了劈窗算法的方程计算.针对MODIS的波段设置特点,先用近红外波段反演大气水汽含量,然后根据LOWTRAN模拟大气水汽含量与透过率的关系,这样可以根据反演得到的水汽计算31和32波段的透过率.最后运用劈窗算法反演山东半岛地区的地表温度(LST),结果比较合理.

The split-window algorithm is briefly introduced. The computation of split-window algorithm is simplified. According to the character of MODIS, the water content is derived from the image and the transmittances of 31 and 32 bands are calculated through building the relationship between the water content and the transmittance. Finally, the land surface temperature(LST) of Shandong peninsula is retrieved using the split window algorithm.