Snow cover data at 20 m resolution with 5 day revisit time since 2015 (cloud permitting) over selected regions.
The level 2B products provide the snow cover fraction by pixel and a cloud mask with a 5 day revisit: near real time data after 2022 are available through: https://hydroweb.next.theia-land.fr/. Earlier products are being reprocessed.
The level 3B products provide multitemporal metrics of the snow « phenology » by hydrological year (01 Sep to 31 Aug). The data were derived from Sentinel-2 (after 2015) and Landsat 8 (2013-2021). Products are available through: https://hydroweb.next.theia-land.fr/. The product format is described here: https://gitlab.orfeo-toolbox.org/remote_modules/let-it-snow#products-format. See the gallery below.
The level 2B products are also available in near real time over the entire Europe from Copernicus Land: https://land.copernicus.eu/en/products/snow/fractional-snow-cover.
Contact: Simon Gascoin simon.gascoin@univ-tlse3.fr and Guillaume Eynard-Bontemps Guillaume.Eynard-Bontemps@cnes.fr
More information about this collection: https://www.theia-land.fr/en/blog/product/snow/
Algorithm and scientific evaluation: https://essd.copernicus.org/articles/11/493/2019/
Gallery: Snow phenology from Theia snow products
