=> Airplanes largely disrupt our remote sensing images, because of the ice contrails they leave behind them, which often turn into cloud cover. We had to set up a method for detecting and correcting aircraft contrails. LANDSAT 8 image acquired over Paris on 14/04/2013. On the left, RGB color composition, on the right, image of […]
=> The above plot shows the TOA reflectance time series gathered by Sentinel-2 over a pixel chosen randomly in a tile in the centre of France (tile 31TDK, pixel 3000-7000), from L1C products. Looking at the time series, it is rather difficult to tell what kind of surface was observed, even if a vegetation cycle […]
« The most usual weather in these latitudes is a fresh wind between north west and south west with a cloudy overcast sky » – Phillip Parker King, Sailing Directions for the Coasts of Eastern and Western Patagonia (1832). Patagonia is a beautiful place to visit but campers know that the weather is extremely variable and the […]
=> The first thing we do in the morning at CESBIO is a break : the coffee break. This is the perfect time to gather field information on the state of the snow cover in the Pyrenees. This year everyone agrees that snow is rare … Can we check this using remote sensing?
=> 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 […]
=> These days, Mireille Huc is spending a lot of time to enhance the cloud shadow detection method applied to time series. Our MACCS method tends to forget some shadows when they are partly hidden under the cloud. We will explain in a future article the defects of the present method and how we will […]
=> Since Christmas (almost, December 23rd), USGS distributes LANDSAT 8 data corrected from atmospheric effects, as they already did for LANDSAT 5 and 7. These data have been long awaited and will be very useful. Of course, USGS processing addresses the whole world. To access these products, you should use the earthexplorer.server. You will find the […]
=> As for LANDSAT 8 a few weeks ago, we just produced the level 2A products for the LANDSAT 5 et LANDSAT 7 data acquired above France from 2009 to 2011. This data set will be released in a few days, when its transfer to the distribution server has ended. The MUSCATE team took charge […]
=> That was fast ! The processing of all the LANDSAT 8 images taken above France in 2013 took less than 15 days. The first LANDSAT 8 images were taken in April 2013. The MUSCATE team processed the data for the THEIA land data center, using CNES computing center. A few more days will be necessary […]