Vavilov Glacier in 2016 and 2017

Back from a long summer break, I needed to find something else to do than just catching up with emails... Luckily, the organizers of the 2017 International Glaciology Society meeting in Boulder tweeted this animation of the Vavilov Glacier (October Revolution Island, Russian Arctic):


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THEIA distributes L2A Sentinel-2 data over Italy, Switzerland, and most of Alps

Done ! All Sentinel-2 data acquired above Italy, Switzerland and Austrian Alps, and processed at level 2A, are now available on Theia website! The data format is described here. We would be very thankful if users in Italy or Switzerland could help us spread the news among remote sensing users in both countries.

 

The level 2A product provides surface reflectances with a good cloud and shadows mask. The processing is done at CNES, within MUSCATE facility, using the MAJA software, developed by CNES, CESBIO and DLR. The production started with data acquired in December 2016, and will go on in near real time.

 

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An anomaly provisionally prevents real time production in ESA's Sentinel-2 ground segment

That's bad luck, just before the long week-end of the 15th of August, ESA Sentinel-2 ground segment failed and ceased production. This explains why Theia ground segment is not producing in real time anymore.

Pas de chance, le segment sol de Sentinel-2 À L'ESA est tombé en panne juste avant le week-end du 15 août. Ceci explique pourquoi la production de Theia ne s'effectue plus en temps réel.

As a consequence of a ground segment contingency occurred at Matera station, the publication of Sentinel-2 products in the data hubs is temporarily interrupted as of today 11 August. The anomaly is under investigation and the data dissemination is expected to resume by mid of next week.

NASA selected CESBIO's land cover map of France as "image of the day"

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It is a well deserved recognition for the land cover product developed at CESBIO : NASA's earth observatory blog dedicated its "image of the day" blog post for the 15th of August to this product.

 

This work was done in the framework of Theia, using iota2 free software also developed at CESBIO. Thanks to the information conveyed by time series,iota2 is a fully automatic processor.

Jordi Inglada's team first published in 2015 a land cover map based on LANDSAT 8 data acquired in 2014, with a 30m resolution.This production was followed, in 2017 by a new map, based on Sentinel-2 data, acquired in 2016, at 10m resolution.

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THEIA distributes L2A Sentinel-2 data over Spain and Netherlands in near real time.

=>  Sentinel-2 data acquired above Spain and Netherlands are now available on Theia website! Portugal was already available. We also completed the little part of Belgium that was missing. The level 2A product provides surface reflectances with a good cloud and shadows mask. The processing is done at CNES, within MUSCATE facility, using the MAJA software, developed by CNES, CESBIO and DLR.

 

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MUSCATE : New tiles in Europe will be added within Theia's production of Sentinel-2 L2A products

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Just before the holiday period, we are very happy to tell that all the sites that had been selected by Theia for the production of Sentinel-2 Level 2A products are now in production within MUSCATE. for Theia Land data center. The number of tiles processed each days often tops 400 ! Only a couple of sites need a few more days to be completed.
 

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But that's not the only good news : given we have some production margins, we are going to add 200 tiles in Europe : Spain, Portugal, Italy, Netherlands, Belgium, Luxembourg, Switzerland, and small parts of Germany and Austria will be included in Theia's production. The new tiles, which appear in red in the image above, will be available in August, starting from images acquired in December 2016. We are also talking with other partners to generalize MAJA processing over Europe.

 

Finally, regarding Sentinel-2B, a few weeks will be necessary 1) to get some rest, 2) check the quality of our products. S2B data release from Theia should happen in September.

THEIA releases Sentinel-2 L2A time series over several regions of Brazil

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

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❄ Powder alarm on Theia / Avalanche de produits neige sur Theia ❄


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 !

Sen2agri system released

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.

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Theia releases first batch of snow products

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)

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