=> The snow season is ending in the high Atlas mountains in Morocco this beginning of June, as you may see in this time series from SPOT-4 (Take5) experiment over the Rheraya watershed (225 km²). This watershed is one of the study sites of the Laboratoire Mixte International TREMA which CESBIO is co-leading. The Rheraya […]
=>En ce début du mois de juin, la saison des neiges touche à sa fin dans le Haut-Atlas marocain comme l’illustre cette série d’images SPOT-4 (Take5) extraites sur le bassin de la Rheraya (225 km²). Ce bassin est un site d’étude privilégié du Laboratoire Mixte International TREMA dont le CESBIO est co-porteur. L’oued Rheraya fournit […]
Les données de LANDSAT 8 sont disponibles sur http://earthexplorer.usgs.gov/ LANDSAT 8 data are available on http://earthexplorer.usgs.gov/
=> USGS and NASA just released a new LANDSAT level 2A product (surface reflectances corrected for atmospheric effects with a cloud mask, a cloud shadow mask, and a water and snow mask). The thermal data are expressed as brightness temperatures at the top of atmosphere. This product is only available for Landsat 5 and Landsat […]
=> L’USGS et de la NASA viennent de mettre en place la production et la distribution de produits LANDSAT de Niveau 2A (exprimés en réflectance de surface, corrigés des effets atmosphériques, et accompagnés d’un masque des nuages et de leurs ombres, et de masques de neige et d’eau). Pour le moment, les données thermiques sont […]
=> CNES and Astrium Geo (Spotimage) have agreed to distribute the SPOT4 (Take5) data with a very open license, which was just released. As always with the elaboration of legal agreements, the process was rather long and complicated, but here, the result is very positive. If I understand correctly (you’d better read the document, which is […]
=> Caution ! This post contains formulas ! Aerosols play a great role in the atmospheric effects. Aerosols are particles suspended in the atmosphere, which can be of several types: sand or dust, soot from combustion, sulfates or sea salt, surrounded by water… Their size ranges between 0.1 micron and a few microns, depending on […]
=>Attention, cet article contient des formules ! Les aérosols jouent un rôle prépondérant dans les effets atmosphériques. Les aérosols sont des particules en suspension dans l’atmosphère, qui peuvent être de plusieurs types : grains de sable ou poussières, suies issues de combustion, sulfates ou sels marins entourés d’eau… Leur taille peut varier de 0.1 […]
=> The SPOT4 (Take5) is already 3 months old and will only last for one month and a half. For the in-situ measurements among the users teams, there is also only one month left. On that occasion, we just created a quicklook page that shows all the images acquired between January the 31st and […]