Theia’s Sentinel-2 L3A monthly cloud free syntheses
=> Thankfully, animal biologists are not supposed to read this blog, as they might be shocked by what follows : Well, let’s explain !
Pre-processing (geometry, atmosphere, clouds)
[MUSCATE news] Two new sites added to Sentinel-2 L2A production : Lebanon and Telangana (India)
After a very difficult period, and thanks to the installation of new improvements MUSCATE ground segment is back in shape, and margins have been found to add new sites. We have added two new zones where Sentinel-2 data are processed to Level 2A, which provide surface reflectance after atmospheric correction and a good quality cloud […]
[Venµs news] Distribution of Level2A has started
You might have noticed the apparition of the first Venµs L2A products on Theia web site within the real time production, since last Friday. A first global processing will start this summer, to provide you with the data acquired from November until now. There will be probably further reprocessings to benefit from the fine tuning […]
Slides and conclusions of the MAJA/Theia worskhop
The Theia workshop for Sentinel-2 L2A MAJA products was held in Toulouse on the 13th and 14th of June 2018. About 80 people participated either on the 13th or 14th, and nearly 70 participants attended each day of this workshop, whose object was to collect feedback and share experiences on the quality, use and applications […]
[Venµs News] L1C processor upgraded to V1.0
Summary Until V0.9, only a small proportion of Venµs L1C data were available at L1C level on Theia’s website. Now, with the version V1.0, a greater proportion of products will be distributed to users, but we advise users to check their geometric quality in the metadata, as explained below. Distribution of V1.0 products should […]
[MUSCATE News] Some bad and good news
The bad news The MUSCATE ground segment that delivers Sentinel-2A products has had several issues these past two weeks. We have had some performance issues with the data base which tells MAJA processor which product must be processed next. These lower performances caused traffic jams and disruptions in the data production, and the system […]
Are Sentinel-2 water vapour products useful ?
=> Sentinel-2B has two channels centered on water vapour absorption bands: channel 9 (940 nm) and channel 10 (1380 nm). Band 10 corresponds to a very strong absorption, strong enough to prevent any photon to reach ground from the Sun without being absorbed in the atmosphere. This band is intensively used to detect and correct […]
Des applications pour la vapeur d’eau observée par Sentinel2 ?
=> Sentinel-2B dispose de deux canaux centrés sur des bandes d’absorption de la vapeur d’eau: la bande 9 (940nm) et la bande 10 (1380 nm). La bande 10 correspond à une très forte absorption, telle qu’en général, dans cette bande, les photons n’ont aucune chance d’atteindre le sol, et encore moins le satellite après réflexion […]
MAJA V3.1 will be distributed this May
We will start distributing MAJA V3.1 this May to replace MAJA V1 on CNES free software platform. It is also in the pipeline of enhancements of Theia processing platform (MUSCATE), but this pipeline is quite full, so we will need to be patient (which requires a big effort for me, patience not being my best quality…) MAJA […]