Snow-covered surface

Presentation

THEIA group of experts in Snow-Covered Surface brings together teams from Cesbio, IGE, CNRM (CEN) and Legos. Theia Snow-Covered Surface SEC is dedicated to detect the presence of snow cover, on a continuous, large-scale basis.

The first product produced in this context is a mask indicating the presence or absence of snow and clouds at 20 m resolution from Sentinel-2 images. These data are available for download on theia.cnes.fr.

Theia Snow Product — Theia L2-Snow Product detects the presence of snow (in blue) and cloud (in white).

A second product provides an annual synthesis of snow cover duration per pixel between September 1 and August 31. It is also distributed on theia.cnes.fr.

Users are the academic sector (research laboratories in hydrology, mountain ecology), mountain water operational management agencies, industry (hydropower producers), agriculture (irrigation companies) and tourism/leisure services (ski resorts, individuals).

Calendar

2015: demonstrator using SPOT-4 Take 5 series on the Pyrenees and the Atlas Mountains
2017: operational production of Theia Snow Product
2019: Production of Annual Synthesis documenting the duration of snow cover
2020-2021: development of new products

Contact

Simon Gascoin
CNRS | CESBIO
@S.Gascoin
Contributions

Links

A Resource Site : https://labo.obs-mip.fr/multitemp/