Venµs first images

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The real products from the new Venµs satellite, will be time series of high resolution images of the Earth (not Venus planet) acquired every second day on more than 100 sites. But to get these time series, Venµs needs to be on its nominal orbit, which will be reached beginning of September. Anyway, we are happy to share the first images taken from the satellite, just to let you know that Venµs camera, memory and downlink work as expected ! It is already a lot, and after the usual debugging, verification, calibration and assessment, we will soon get our time series.

One of Venµs first images acquired above Phoenix (Arizona, USA), with a lot of irrigated fields.

 

 

But I'd better not tell too much, while I can just provide the official press communication from CNES, on which each word was weighted, discussed and approved !

Many thanks to all my French and Israeli colleagues who contributed to this quick and successful achievement.

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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Sentinel-2 ground segment restarted, but a backlog remains to be processed

From Scihub news :

Referring to the news of 11 August , users are informed that the contingency issue occurred at Matera has been solved and nominal Sentinel-2A/B production was restarted yesterday 16 August in the early afternoon.
An inventory of the missing production is being consolidated and all impacted S2A/B L1C products will be recovered in the coming weeks, together with the ongoing recovery of missing products between 1st and 8th August as reported in the news of 09 August .

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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La NASA choisit le produit d'occupation des sols OSO du CESBIO comme "image du jour "

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C'est une reconnaissance bien méritée pour le produit d'occupation des sols OSO développé et produit au CESBIO : le blog "earthobservatory" de la NASA a consacré son article "image du jour" du 15 août à ce produit.

 

Ce travail a été conduit dans le cadre de Theia, avec le logiciel libre iota2 développé au CESBIO. Grâce à l'utilisation de toute l'information contenue dans les séries temporelles  d'images, la chaîne iota2 arrive à fournir un résultat de grande qualité, tout en étant complètement automatique.

 

L'équipe de Jordi Inglada a publié une première carte en 2015, basée sur les données LANDSAT 8 acquises en 2015, avec une résolution de 30m. Cette production a été suivie, début 2017, d'une carte basée sur les données Sentinel-2, acquises en 2016, cette fois à une résolution de 10m.

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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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THEIA distribuye datos de Sentinel-2 al nivel 2A sobre toda la península Ibérica, en casi tiempo real

=> Los datos del satélite Sentinel-2 sobre la península ibérica, procesados al nivel 2A,  ahora están disponibles en el sitio web de Theia ! El producto de nivel 2A ofrece reflectancias de superficie, después de una corrección atmosférica, con una buena mascara de los nubes y de sus sombras. El procesamiento es hecho en CNES (el Centro Nacional de Estudios eSpaciales), con el software MAJA, desarrollado por CNES, CESBIO y DLR.

 

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Venµs is in orbit and in good health

The Venµs satellite was launched very early today from Kourou on a Vega rocket. Venµs has always been late so far, but we now can say that it was at least early once ! The first news from the satellite are excellent, and everything is green. Venµs first images will hopefully be taken this month, and the 3 months commissioning phase will start, before we can declare Venµs operational.

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