At the end of 2023, the Surfwater product based on Sentinel-2 optical images will be available on the hydroweb.next.theia-land.fr portal for mainland France.
Surfwater is a water surface product that indicates the presence or absence of open water on continental surfaces at 10m spatial resolution. For Sentinel-2, new maps are produced every five days, based on level 2A images produced by Theia and in the absence of clouds.
Monthly and annual summaries are also available for seasonal and climate studies.
Over the course of 2024, other geographical zones will gradually be made available on the run (Europe, West Africa, etc.). Towards the end of 2024, the Surfwater product based on Sentinel-1 radar images will also be available, with a 6-day revisit. Radar adds the possibility of nighttime acquisition and acquisition in the presence of clouds, unlike optical imagery. The geographical areas covered will initially be the same as those covered by the optical version, with an extension of the Surfwater radar production zones to areas where optical data is not available (Amazonia, Congo, etc.).
News
The SWOT space mission was launched at the end of 2022 by CNES and NASA to document the water masses of the entire planet – oceans and continental waters. Data from this mission covering virtually the entire Earth (78°S-78°N) are now available, starting on July 26, 2023. The scientific teams are now beginning to have […]
Products
Discover Theia Surfwater Product now produced continuously for Sentinel-2 and available on hydroweb.next
Products
Discover the new hydroweb.next portal, which now include Theia Lake and River Water Level Products, Hydroweb
Products
Find Theia Snow product on hydroweb.next along with other signifiative hydrological data and products.
Publications
Flavien GOUILLON & Lionel ZAWADZKI from CNES gave an update on the evolution of the Theia data and services infrastructure to meet the needs of hydrological data processing and dissemination.
