=> We started distributing MAJA as a free software in July 2017, less than 2 years ago, and it already reached 1000 downloads (1043, as a mater of fact). MAJA was in fact downloaded twice per working day, and in the very last weeks, we had about 4 downloads a day ! Of course it […]
The Sen2Agri system was just released in version 2.0. As the project is now terminated and will not receive more funding from ESA, V2_0 is the final version, apart maybe for a few bug fixes. Sen2Agri is a very complete ground segment that automates download and processing of Sentinel-2 data to obtain multi-temporal syntheses, crop/non crop, […]
=> The combined use of VENμS, Sentinel-2 and Landsat-8 data can increase the likelihood of obtaining cloud-free images or may allow detailed tracking of rapidly evolving phenomena. In order to facilitate this combination, the table below summarizes the correspondences between the spectral bands of the instruments. VENμS does not have a spectral band in the […]
=>L’utilisation combinée des données de VENµS, Sentinel-2 et Landsat-8 peut permettre d’augmenter la probabilité d’obtenir des images sans nuage ou de suivre de manière détaillée des phénomènes à évolution rapide.Afin de faciliter cette combinaison, le tableau ci-dessous présente de manière résumée les correspondances entre les bandes spectrales des instruments. VENµS ne comporte pas de bande […]
What’s new ? Pfew ! It has been quite long, but MAJA 3.3 is available, and it improves a LOT of things ! Moreover, when we validated the results, we figured out that one of the parameters in our settings had a wrong value (10 instead of 1). It is easy to make such errors, […]
=> There is an odd image in this time series of L2A products of the 31TCJ Sentinel-2 tile (Toulouse region). Can you guess which one ? Yes it is the last one, acquired on the 26th of February. But what’s odd with it ?
=>Parmi cette série temporelle d’images de niveau 2A de la tuile 31TCJ (Toulouse), il y a une intruse. Saurez vous déviner laquelle ? Oui, c’est la dernière,, acquise le 26 Février. Mais qu’a t’elle de spécial ?
Le 1er avril est la date souvent utilisée par les hydrologues pour caractériser le stock de neige disponible avant la saison de fonte. A partir des produits neige Theia, j’ai calculé la durée d’enneigement par pixel de 20 m dans les Pyrénées depuis le début de l’année hydrologique (le 1er septembre 2018) jusqu’au 1er avril […]
WASP (Weighted Average Synthesis Processor) is the tool we use to compute the nice (mostly) cloud free syntheses of Sentinel-2 surface reflectances, as shown in the images below. A full resolution viewer is also available in this post, or you may also download the products you can download from Theia. As promised (but it took […]