Après plus de 13 ans d’exploitation, et après la petite prolongation de son existence par l’expérience Take5, le CNES a désorbité, passivé et éteint le satellite SPOT5, le 11 décembre.Je n’en dirais pas plus, puisqu’un collègue d’Airbus a donné tous les détails sur son blog. After more than 13 years of exploitation, and after a little […]
=> « Winter is coming » ― George R.R. Martin, A Game of Thrones As Christmas holidays are approaching you might want to know if there is snow in your favorite spot of ski touring? A good knowledge of the snow cover variability is important – not only to plan your next week-end, but also because the snow is […]
I had not understood everything on the issue Sentinel-2 had in October and November with its image processing and storage systems (the MMFU system). The bug has been identified but the correction has not been uploaded yet. It seems that it took quite some time to test it and have it work in all cases. […]
=> Note : the apihub is only accessible for those of you who submitted an account before the 21st of December. As a result, it is much easier to download the Sentinel- products at CNES PEPS facility. To access the data within PEPS, I have written a similar program to the one described below . The Sentinel […]
I am very happy to share the news of the opening of Sentinel-2A data access on the Scientific Data Hub on https://scihub.esa.int/ Up to now only data acquired after the 28th of November are available, but ESA says : We will also reprocess any useful data from the Commissioning Phase and the recent weeks after IOCR, […]
=> Up to now, over France, there is no Land Cover Map generated annually at a decameter resolution. The Corine Land Cover map, which is widely used, is only produced every 5 years, and 2012 version was issued in 2015. This map is mainly produced using photo interpretation, and therefore requires a very large amount of […]
=> Regular readers of this blog are probably convinced that the time series of satellite images are perfectly suited to describe the evolution of the Earth’s surface. Space agencies are stepping up efforts to make available products to ease the use of these data. If one sets aside the main author of this blog (note […]
Good news ! As said in the weekly bulletin of Sentinel-2, the acquisition plan has resumed after correction of the Mass Memory and Formatting Unit anomaly. Bonne nouvelle ! Comme annoncé dans le bulletin de santé hebdomadaire de Sentinel-2, le plan d’acquisition normal avait repris, après correction de l’anomalie de la mémoire de masse.
=> You will find the latest documentation and useful links on the new MAJA website. MACCS (Multi-sensor Atmospheric Correction and Cloud Screening) is a level 2A processor, which detects the clouds and their shadows, and estimates aerosol optical thickness (AOT), water vapour and corrects for the atmospheric effects. The processor was jointly developed by CESBIO […]