This video shows all available Venµs images since launch over the Khumbu icefall near Mt Everest (109 images). The images are RGB composites of Level 1C bands 7,4,3 (5 m resolution) that were draped onto the HMA 8m DEM. How to do that? First download the Venµs images using theia_download.py, extract the region of […]
In preparation for the next Pan European high resolution snow and ice monitoring service, I have upgraded the let-it-snow (LIS) processor to enable the computation of the fractional snow cover (FSC) within the pixel. So far LIS was only used to compute a « binary snow mask » (in fact ternary: snow, no-snow, cloud). However, the EEA […]
Pour le Conservatoire botanique national alpin j’ai généré les cartes de durée d’enneigement par mois (avril, mai, juin et juillet) pour 2016, 2017 et 2018 à partir de toutes les images Sentinel-2 et Landsat-8 disponibles chez Theia sur les Alpes (tuiles 31TGM 32TLS 31TGL 32TLR 31TGK 32TLQ). Normalement la méthode est conçue pour faire des […]
The European Environment Agency (EEA) has selected a consortium led by Magellium to implement the next Pan European high resolution snow and ice monitoring of the Copernicus Land Monitoring Service. This future service aims to monitor three variables at 20 m resolution over the tiles displayed above: All products should be generated from atmospherically corrected […]
Two years ago I posted an animation of the snow cover area evolution near Zermatt, Switzerland from Sentinel-2 L2A data processed by LIS. From this time series of snow maps I generated a snow cover duration map and then I added the glacier outlines from the Randolph Glacier Inventory 5.0. I was satisfied by the […]
Récemment j’ai extrait la carte de la durée de l’enneigement faite à partir des produits neige Theia pour la Direction Départementale des Territoires de Haute-Savoie (DDT 74). Pour cela j’ai traité quatre tuiles Sentinel-2 ce qui couvre une bonne partie des Alpes du Nord. En inspectant cette image mon œil a été attiré par des […]
Recently I generated one year of snow maps from Sentinel-2 in the Canadian Rockies for a talented colleague who is working on the numerical simulation of the snow cover at high-resolution with an exciting new hydrological model. The area is not covered by Theia, hence I used Start_Maja to generate the L2A products and then […]
From Mont Valier to la Roca Foradada, on April 30 (left) and May 6th, 2019(right) 3D View : download KMZ files for KMZ pour Google Earth :April 30, 2019May 6 2019
Du Mont Valier à la Roca Foradada, le 30 avril (à gauche) et le 6 mai 2019 (à droite) Visualisation 3D Télécharger un fichier KMZ pour Google Earth :30 avril 20196 mai 2019