Here are some long awaited news about the VENµS VM5 phase. The acquisitions started end of March 2022 with the following list of sites, and should go on for at least one year, and maybe more depending on the consumption of fuel (Hydrazine) to maintain the orbit. Most of the sites are acquired with a […]
I found the leak from Nord Stream 2 in the latest Sentinel-1 image (29 Sep 2022). It’s large enough to be visible from space. From this radar image, I could also spot the leak in the Landsat image captured on the same day (29 Sep). And there’s another leak visible northeast of Bornholm Island, this […]
We are hiring an expert (M/F) in scientific computing to improve the consideration of aerosol type in the MAJA Earth observation image processing chain using machine learning methods. The aim is to explore single and multi-variable regression approaches in order to select the most efficient one, which is the result of a trade-off between simplicity […]
=> You may have noticed an interruption in the availability of level 2 and 3 products on the THEIA portal. This is due to ongoing disruptions in the availability of CAMS (Copernicus Atmosphere Monitoring Service) data used by the MAJA atmospheric correction chain. These disruptions are linked to the migration of the ECMWF data centre, […]
=> Vous avez peut-être noté une interruption dans la mise à disposition des produits de niveau 2 et 3 sur le portail THEIA. Ceci s’explique par les perturbations en cours dans la disponibilité des données CAMS (Copernicus Atmosphere Monitoring Service) utilisées par la chaîne de correction atmosphérique MAJA. Ces perturbations sont liées à la migration […]
Campagne expérimentale dans des conditions estivales extrêmes sur Auradé ! Entre orage (apport de 40 mm de pluie), puis sècheresse et canicule (40°C), les variations de l’état hydrique du sol de la parcelle flux ICOS d’Auradé furent optimales entre fin juin et mi-juillet 2022 pour accueillir et mener la campagne expérimentale Pré-HiDRATE (integrating High resolution Data […]
Table of Contents 1. New iota2 release 2. Classification using deep learning 2.1. Material 2.1.1. Satellite image time series 2.1.2. Preparation of the ground truth data 2.1.2.1. Sub data set 2.1.2.2. Clean the ground truth vector file 2.2. Configuration of iota2 2.2.1. Config and ressources files 2.2.2. Iteration over the different sub ground truth […]
A partir des produits neige Theia, j’ai calculé la durée d’enneigement entre le 1er juin et le 31 août à 20 m de résolution spatiale pour chaque année depuis 2017 dans les zones cœurs des quatre Parcs Nationaux français de haute montagne (Pyrénées, Vanoise, Écrins, Mercantour). A titre d’illustration voici la comparaison entre l’été 2022 […]
=> 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 […]