This app shows the current snow cover area in comparison with a 30-year climatology that was generated from a climate reanalysis. The current snow cover is obtained from Nasa’s Terra/MODIS satellite observations. The app is automatically updated when new observations are available. You can select the entire Alps or a river basin subregion. The plots will appear after a few seconds load time.
Documentation
The method is described in the following publication:
Gascoin, S., Monteiro, D., Morin, S. (2022) Reanalysis-based contextualization of real-time snow cover monitoring from space, Environ. Res. Lett. 17 114044 https://doi.org/10.1088/1748-9326/ac9e6a
The data and Python code to train the model and infer the snow cover fraction climatology are publicly available on GitHub (https://github.com/sgascoin/ModisExtension/). Earth Engine JavaScript code to compute the snow cover fraction from MODIS products and the code of the web application are publicly available in this git repository (https://earthengine.googlesource.com/users/sgascoin/apps).