For its high spectral and time resolution) MODIS data was more suitable lor the inversion of snow depth compared to NOAA and other remotely sensed dat a. The ASD (Analytical Spectral Devices) was used to measure the spectrum of sno w in different depth levels. The spectral characteristics of the snow at various depth levels were studied and the relationship between the reflectance and the snow depth was analyzed. Thus, the best channels ol MODIS lor snow depth inversi on were identified based on the experiments. In this paper, the authors take nor them slope economic zone of Tianshan Mountain as an example to inverse the snow depth. The MODIS 1B level images of Xingjiang from Dec. 2004 to Mar. 2005 were ob tained as the remote sensing data source. Recorded snow depths were acquired fro m the meteorological station as field sample data.The relationship between MODI S reflectance and snow depth was built up and used to do the inversion of the wh ole study area. According to comparison of the inversed snow depth and the field measured depth , the authors iind that the method has the advantage of high accu racy and great monitoring range. The result clearly demonstrates the snow covera ge and the distribution of the snow depth. The inversed results could be well us ed in the calculation of surface runoff and the development planning of the agri culture.
MODISreflected spectrumsnow depthnorthern slope economic zone of Tianshan Mountaininversion
NETL
NSTL
万方数据
