Estimation And Analysis Of Snow Cover In Cloud Cover In High Asia Area

High Asia is a high-altitude area centered on the Tibet Plateau.It is the largest area of snow cover in China.The dynamic changes of snow cover are related to climate change,hydrological circulation,snowmelt model,disaster prediction and ecological environment protection.Are of great significance.Based on the MODIS daily snow product,the dynamic monitoring of snow in this area is carried out.Combined with different cloud pollution treatment methods,snow cover estimation method and terrain data,the time interpolation,spatial interpolation and probability statistics are used to form 7 The snow cover coverage under the cloud cover is estimated and the accuracy of the synthetic snow cover products is verified by the observation data of the ground site,so as to obtain the snow cover products with the influence of the MODIS in the Asian region,Based on the snow cover coverage of the high Asia in 2003-2010,the temporal and spatial analysis of the snow for long time series was carried out from the aspects of monthly average snow cover area,snow cover days and the start time of snowfall and snowmaking.So as to carry out real-time dynamic monitoring of snow.The results show that the snow is based on the accuracy of time and space continuity,and the snow cover is highly uneven,and the snow cover area increases with the elevation.