Data Mining from Remote Sensing Snow and Vegetation Product

Snow is an important research interest in international cryosphere research. In China, cold region account for 43% of the total area (Yang et al., 2000). The area of stable snow where snow cover duration is greater than 60 days is approximately 420×104km2. In West China, the recharge to spring freshet from winter snow is a necessary regulation for spring drought (Qin et al., 2006). However, larger area but sparser stations in West China lead to a shortage of observations. Especially for snow, most of the regions where snow-dominated are located in mountainous regions that are quite inconvenient for people to establish observatory stations. All these result in a poor representative of station observations (Li, 1995). Therefore, application of Remote Sensing is absolutely necessary for snow research (Gao et al., 2010).