Sequence Of Snow Maps Produced From Sentinel-2 Type Of Observations (Spot-5 Take 5) Over The Deux Alpes And Alpe D'Huez Ski Resorts

This is a series of snow cover maps between April 11 and September 8, 2015 over a region that covers the Deux Alpes and Alpe d'Huez ski resorts in France. The snow maps were produced from a SPOT-5 Take 5 images using the "Let-it-snow" processor (v1.0, June 2016: http://tully.ups-tlse.fr/grizonnet/let-it-snow). The SEB folder contains 20 GeoTiff at 10 m résolution in Lambert-93 projection system coded as follows (cf. http://tully.ups-tlse.fr/grizonnet/let-it-snow#products-format): 0: No-snow<br> 100: Snow<br> 205: Cloud including cloud shadow<br> 254: No data The "anim_no05jul_opt" animated gif was produced from these data after performing a simple temporal interpolation given by the following rules: If a pixel masked by a cloud was marked as snow in the preceding image and in the following image, then it is reclassified as a snow pixel. If a pixel masked by a cloud was marked as no-snow in the preceding image and in the following image, then it is reclassified as a no-snow pixel. The July 05 image was removed from the animation due to a cloud/snow confusion. This type of error should be avoided with Sentinel-2 data thanks to an additional "high cloud" test (see http://tully.ups-tlse.fr/grizonnet/let-it-snow/blob/master/doc/tex/ATBD_CES-Neige.pdf). These data were featured in this blog post : Gascoin, S. "Monitoring the snow cover in ski resorts using Sentinel-2" (19-Sep-2016) http://www.cesbio.ups-tlse.fr/multitemp/?p=8676