Understanding and documenting the evolution of often poorly accessible but central environments in global equilibria.
Theia Snow Product detecting the presence and the absence of snow on land surface.
National scale maps with 17 (2016,17) and 23 (2018) class nomenclature, spatial resolution between 10 m (raster) and 20 m (vector), annual update frequency.
Presentation The Scientific Expertise Centre (SEC) Snow-Covered Surface brings together teams from Cesbio, IGE, CNRM (CEN) and Legos. The first […]
Developing L2 and L3 level atmospheric correction tools for Sentinel-2, Landsat-8 and Venµs images.
Presentation The Scientific Expertise Centre “Land Cover SEC” brings together teams from Cesbio, UMR Ispa, Dynafor, CNRM, UMR Tetis, IGN–Matis, […]
To celebrate the 10’000th snow product in Theia, here is over the Vicdessos area in the french Pyrenees near Andorra. The snow is in blue and the clouds are in white!
Maps of snow cover area at 20m resolution generated from Sentinel-2 observations are available every 5 days on theia.cnes.fr.
Theia releases since June 2017 a new 20 m resolution product which indicates the snow presence or absence on the land surface every fifth day if there is no cloud.