Estimation and Validation the Fractional Snow Cover from Sentinel-2 MSI Over the Tibet Plateau

Many algorithms and products for snow cover have been developed. We built a high spatial and temporal resolution validation data set, which can be used as a unified standard for the validation of existing snow products. In recent years, Sentinel-2 MSI has been widely used because of its higher spatial and temporal resolution. In this study, we applied the linear spectral mixture analysis to Sentinel-2 MSI to obtain the fractional snow cover products, then we explored whether the Sentinel-2 MSI FSC products can meet the accuracy requirements with GF-2 data. The results show that the accuracy of Sentinel-2 MSI FSC can meet the requirements. Finally, we use Sentinel-2 MSI FSC to validate the MODAGE product.