Retrieving Snow Surface Temperature Based on MODIS Data  

作　　者：ZHOU Ji CHEN Yunhao LI Jing TANGYan 

机构地区：[1]State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Resources Science and Technology, Beijing Normal Un versity, 19 Xinjiekouwai Street, Beijing 100875, China

出　　处：《Geo-Spatial Information Science》2008年第4期247-251,共5页地球空间信息科学学报（英文）

基　　金：Supported by the National Natural Science Foundation of China （No.40771136）, the International Scientific and Technological Cooperation Program （No.2007DFA20640） and the National 973 Program of China （No. 2007CB714402, 2007CB714403）.

摘　　要：On the basis of simplification of the Planck function in a low temperature range, this paper revises the practical split-window algorithm and presents a method for retrieving snow surface temperature （Ts） based on MODIS data in the middle-latitude region. The application of this method in Qinghai Lake region reveals that it is feasible for the retrieval of Ts. Results of correlation analysis indicate that there was strong negative relationship between Ts and altitude. By analyzing three typical areas in which land cover was relatively homogenous, this paper discusses the relationship between Ts and normalized difference snow index （NDSI） and then presents a new concept named ＂NDSI-Ts space＂.根据在一个低温度范围的普朗克常数功能的简化，这篇论文修订实际裂口窗户算法并且为在中间纬度的区域基于 MODIS 数据检索雪地面温度(T ) 介绍一个方法。在金海·莱克区域的这个方法的申请表明它为 T <SUB 的检索是可行的 > s </SUB> 。相关分析的结果显示在 T <SUB 之间有强壮的否定关系 > s </SUB > 并且高度。由分析在哪个土地覆盖是相对同质的三个典型区域，这篇论文讨论在 T <SUB 之间的关系 > s </SUB > 并且规范的差别雪索引(NDSI ) 然后礼品一个新概念说出“ NDSI-Ts 空间”。

关 键 词：snow surface temperature normalized difference snow index ALTITUDE MODIS 

分 类 号：P237.3[天文地球—摄影测量与遥感]