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@@ -34,6 +34,8 @@ All the parameters of the algorithm, paths to input and output data are stored i
 
 NB: To build DEM data download the SRTM files corresponding to the study area and build the .vrt using gdalbuildvrt. Edit config.json file to activate preprocessing : Set "preprocessing" to true and set the vrt path.
 
+Warning : DEM with nodata value could alter snow detection. zs should be contained between [-431, 8850].
+
 ### Snow syntheses
 
 Run the python script run_snow_annual_map.py with a json configuration file as unique argument: