Improvement for Split-Window Algorithm and Influence Analysis of Water Vapor Content for Retrieval Accuracy

The split-window algorithm proposed by the authors is improved.In order to evaluate the practical effect of the algorithm,the analysis of influence of water content on the transmittance is made and the results indicate that the algorithm is not sensitivity to water content.In order to confirm the conclusion,the authors retrieve the land surface temperature through change the water content retrieved from MODIS data and get similar conclusion.All the results show that the algorithm is practical and not sensitive to water content.