Theia has added seven new sites in Brazil, for which Sentinel-2 L2A are produced and distributed, starting in December 2016. These sites will be processed in near real time from now on. Data are produced by the MUSCATE system at CNES, using CNES-DLR MAJA processor. The products can be freely downloaded from https://theia.cnes.fr.
These sites were selected following demands from French scientists, with two main themes :
- Land cover and land use change monitoring
- Water body surface and turbidity
Yesterday Theia shifted into high gear and released 1300 snow products!. These products correspond to 13 Sentinel-2 tiles covering the Western Alps (France/Italy/Switzerland), the Pyrenees (France/Spain) and the Hight Atlas (Morocco).
Hier Theia est passé à la vitesse supérieure et a mis à disposition 1300 produits neige ! Ces produits correpondent aux 13 tuiles Sentinel-2 qui couvrent les Alpes Occidentales (France/Italie/Suisse), les Pyrénées (France/Espagne) et le Haut-Atlas (Maroc).
This was made possible thanks to the great work of Dominique Clesse, Joëlle Donadieu, Céline L'Helguen, Arnaud Selle and Simon Baillarin at CNES. Merci à eux !
A very good piece of news: ESA started distributing Sentinel2-B data on Copernicus hub, two months ahead of schedule. This is really an achievement !
Here is ESA's announcement :
Following the successful completion of the Sentinel-2B Satellite In-Orbit Commissioning Phase, we are happy to announce that access to Sentinel-2B Level-1C products will be opened to all users on 6 July .
Access to Sentinel-2B products will initially be provided through a dedicated hub accessible via the Copernicus Open Access Hub home page with public credentials. This dedicated interface will be maintained until early September, at which point both Sentinel-2A and Sentinel-2B products will be commonly accessible through the nominal Data Hub interfaces.
Regarding Theia L2A production, we will have to wait for the availability of the data in PEPS, by end of July, and then perform some validation before releasing the data. Given the holiday period, it will probably happen in September. However, we have already checked that our L2A products, produced with MAJA withing MUSCATE should be great, as shown in this post some time ago:
After 3 years of development, we are very happy to share the news of Sen2Agri system release. Sen2Agri system is a fully automatic production system to produce agriculture information from Sentinel-2 data, with a focus on food security applications. For this reason, the final user meeting was held in Rome at Food and Agriculture Organization and World Food Program. The Sen2Agri project was funded and managed by ESA, and developed by a consortium led by Université Catholique de Louvain, with CESBIO, CS France and CS-Romania.
A very attentive audience at the User Final Meeting, in the impressive World Food Programm conference room
The system manages the following operations :
- Sentinel-2 and LANDSAT 8 data download,
- L2A processing with MACCS/MAJA software (developed by CNES and CESBIO)
- Monthly Synthesis product generation (with a method developed at CESBIO)
- Generation of LAI products (based on a method developed at INRA, France, and updated, integrated to Orfeo Toolbox by CESBIO)
- A Crop mask (issued several times per year), with two different methods :
- without in situ data (method developed at UCL)
- with in-situ data (method developed at CESBIO)
- A crop type product (with a method developed at CESBIO, an early version of iota2 processor)
The scientific work behind the methods was described in a special issue of MDPI remote sensing.
Nous sommes heureux d'annoncer que Theia a mis en ligne 93 produits neige faits à partir de Sentinel-2. Ces produits correspondent à 6 tuiles qui couvrent une partie des Alpes, des Pyrénées et de l'Atlas pour une période comprise entre juillet et novembre 2016. La production opérationnelle devrait débuter cet automne (c'est-à-dire au fil de l'eau), et couvrira une surface plus grande. Nous essaierons aussi d'améliorer les produits grâce aux retours des utilisateurs.
Série temporelle de produits neige pour la tuile 30TYN (Pyrénées)
We are pleased to announce that Theia has put online 93 Sentinel-2 snow products, corresponding to 6 tiles in the Alps, Pyrenees, and Atlas mountains between July 2016 to November 2016. 300 more products should be available next week. The operational production should start in autumn 2017 (i.e. near real time), and will cover a larger area. We will also strive to improve the products based on the users feedbacks!
Time series of available products for tile 30TYN (Pyrenees)
Zermatt is in the corner of the Sentinel-2 tile 32TLS, which is produced at level 2A by Theia. Hence I could generate the snow maps at 20 m resolution for this area (105 dates from December 2015 to October 2017).
Voir en plein écran
THEIA passed two new milestones in this beginning of summer :
- The number of Sentinel-2A Level2A products just passed the 20000 milestone, with the complete collection of French oversea regions, and new sites along the Ganges, Brahmaputra and Mekong rivers. These sites where chosen by a research team from the GET laboratory in Toulouse.
Data are available from https://theia.cnes.fr
Deux évènements à signaler pour le centre de traitement MUSCATE de Theia pour ce début d'été :
Les données sont disponibles sur https://theia.cnes.fr
In the framework of the Pyrenees Climate Change Observatory (OPCC) the Cesbio is contributing to the analysis of the snow cover using satellite imagery. In 2016 four projects associated with the Observatory (Climpy, Replim, Canopee y Florapyr) have been programmed with European Regional Development Funds for transborder cooperation on adaptation to climate change for the next three years .