Sentinel-2

Retour d’expérience sur le suivi hydrologique d’une région Indienne par télédétection

=> Claire Pascal, doctorante au CESBIO, sous la direction d’Olivier Merlin (chercheur CNRS) et co-dirigée par Sylvain Ferrant (chercheur IRD) a brillamment soutenu sa thèse sur le suivi des ressources en eau par satellite le 18 novembre. Les travaux de Claire se sont focalisés sur la région du Telangana en Inde où la culture non […]

10.11.2022

[THEIA] Near real time production of Sentinel-2 images has resumed

Due to Brexit,  the ECMWF moved some of its computer infrastructure from Reading (UK) to Bologna (IT), and a 5 week interruption of service occurred for the production of Copernicus Atmosphere Monitoring Service. As our Level 2A production for Sentinel-2 uses this information to set the type or aerosols for the atmospheric correction, we had […]

02.11.2022

After 6 years of Copernicus data, I have never seen France that yellow

=> What can we say, except that the vegetation situation in France has worsened significantly in July 2022 compared to an already alarming June. The monthly syntheses of Sentinel-2 for the month of July are available since a few days, and the comparison with previous years shows an exceptional drought on the whole territory. Only […]

02.09.2022

In June 2022, drought spreads to all South Western Europe and Maghreb

=> While Italy or Morocco have been alarmed for months, the drought has spread in June to all southwestern Europe (calling Brittany « southwestern » is a bit risky, I admit). The surface reflectance syntheses from Sentinel-2 have been delivered for the month of June a few days ago (I was on holidays), and the comparison with […]

02.08.2022

Dès juin 2022, la sécheresse s’étend à l’échelle continentale

=> Alors que l’Italie ou le Maroc s’alarment depuis des mois, la sécheresse s’est étendue en juin à toute l’Europe du Sud Ouest (qualifier la Bretagne de « Sud Ouest » est un peu osé, je le reconnais). Nous disposons des synthèses de réflectances de surface issues de Sentinel-2 pour le mois de juin depuis quelques jours, […]

Sensing wave patterns in sea ice with Sentinel-2

Collard et al. (2022) have shown that Sentinel-2 can be used to estimate the wave spectrum in the presence sea ice. The waves tilt the sea ice surface and therefore modulate the reflected radiation that is received by Sentinel-2 sensor. The wave spectrum extracted from the image can even be used to invert the wave […]

15.07.2022

« Sen2cor v2.10 cloud masks are now as good as MAJA’s, if not better ». Let’s check !

Colleagues from ESA are reportedly claiming that the cloud masks from the new version v2.10 of Sen2cor are « as good as those of MAJA, if not better ». Well, let’s check. MAJA is the Level2A processor we designed within CESBIO and CNES, to process time series of images such as those of Sentinel-2, LANDSAT, VENµS, TRISHNA, […]

09.07.2022

Publication of the Sentinel-HR phase-0 study final report

=>  As agreed by CNES, the Sentinel-HR phase-0 study report has been published on HAL. This report can therefore be widely shared and cited in your own work: Julien Michel, Olivier Hagolle, Anne Puissant, Pierre-Alexis Herrault, Thomas Corpetti, et al.. Sentinel-HR Phase 0 Report. [Research Report] CNES – Centre national d’études spatiales; CESBIO. 2022. ⟨hal-03643411⟩ […]

31.05.2022

Publication du rapport de l’étude de phase 0 Sentinel-HR

=> Avec l’accord du CNES, le rapport de l’étude de phase 0 Sentinel-HR vient d’être rendu public sur HAL. Ce rapport peut donc être diffusé largement, et cité dans vos travaux : Julien Michel, Olivier Hagolle, Anne Puissant, Pierre-Alexis Herrault, Thomas Corpetti, et al.. Sentinel-HR Phase 0 Report. [Research Report] CNES – Centre national d’études […]

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