Datascience

SEN2VENµS, un jeu de données pour l’entraînement d’algorithmes de super-résolution pour Sentinel-2

=> Nous sommes heureux d’annoncer la publication de SEN2VENµS, un dataset pour l’entraînement d’algorithmes de super-résolution pour Sentinel-2 ! Julien Michel, Juan Vinasco-Salinas, Jordi Inglada, & Olivier Hagolle. (2022). SEN2VENµS, a dataset for the training of Sentinel-2 super-resolution algorithms (1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6514159 Une description détaillée du jeu de donnée a été publié sous la […]

Datascience

SEN2VENμS, a dataset for the training of Sentinel-2 super-resolution algorithms

=>  We are happy to announce the publication of SEN2VENµS, a dataset for the training of Sentinel-2 super-resolution algorithms ! Julien Michel, Juan Vinasco-Salinas, Jordi Inglada, & Olivier Hagolle. (2022). SEN2VENµS, a dataset for the training of Sentinel-2 super-resolution algorithms (1.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6514159 A detailed description of the dataset has been published as a […]

3D

Towards 3D time series

=>  In our a priori definition of Sentinel-HR mission, we had included an option to observe the 3D topography at a high resolution, with a moderate accuracy ambition (lower than that offered by the  CO3D satellite, as shown in the table below), but globally and with a systematic revisit. But our mission advisory group insisted, […]

3D

Du relief pour nos séries temporelles

 => Dans notre définition initiale de la mission Sentinel-HR, nous avions inclus une option permettant d’observer le relief à haute résolution, avec un objectif de précision modéré (inférieur à celui offert par CO3D, comme le montre le tableau ci-dessous), mais avec une revisite systématique et sur le monde entier. Devant l’intérêt des membres de notre […]

En Français

VENµS satellite new phase started: high resolution images every day (almost)

VENµS, the French-Israeli satellite that goes up and down,  reached its new orbit on the first of March, and after first tunings of the programming and telemetry, we have started having our first steady acquisitions on March the 15th. This new phase is called the VM5 phase. On the selected sites, images will be taken […]

snow-ice

Watching snow melt at 10 minute intervals from satellite

This is something new to me… The Geostationary Operational Environmental Satellites (GOES) capture images every 10 minutes at 1 km resolution over America… Such imagery makes it possible to watch the quick melt of a thin snow cover over the US Great Plains during a single day. Sub-daily monitoring of the snow cover at such […]

In English

Lowest snow cover area in the Alps since 2001

On March 2nd, the snow cover area in the Alps has reached its lowest value since 2001. Only 43% of the alpine range was covered by snow (about 82’000 square kilometers), whereas the average is 63% on the same day over the period 2001-2021. The deficit in the number of snow covered days (map below, […]

In English

MAJA 4.5 is now available and compliant with the new Sentinel-2 L1C format

=> UPDATE (Feb 14th 21): the version 4.5.3 is now released and fixes a few minor issues found while testing the first time series of the new L1C format, please upgrade to Maja 4.5.3 ! Following the announcement by ESA of a major product format upgrade for Sentinel-2 by early January 2022, the development team […]

En Français

Les Pyrénées ont fait le dry January

La surface enneigée n’a jamais été aussi basse un 6 février depuis 2001. Elle était de 6 100 kilomètres carrés, alors que la moyenne à cette date est 13 900 kilomètres carrés. Cette situation résulte d’une longue période sèche et ensoleillée qui a commencé le 10 janvier avec l’installation d’une situation anticyclonique.     La […]