Version française par ici. The land surface models simulate the water and energy fluxes between soil, land cover and atmosphere. Their scopes of application spread from numerical weather prevision to soil water modeling. However, these models are initially conceived to be applied on wide areas. Thus, they use low resolution cover parameters (>1km) derived from mid-resolution […]
=> You already heard about iota2 processor, and you must know that it can process LANDSAT 8 time series et deliver land cover maps for whole countries. These las days, Arthur Vincent completed the code that allows processing Sentinel-2 time series. Even if atmospherically corrected Sentinel-2 data are not yet available above the whole France, we used the […]
=> Over the last months, we worked a lot on our method for Land Cover map production. Three main topics (1) were studied with Arthur Vincent and David Morin at CESBIO : porting and validating the iota2 processor on the CNES High Performance Computing facilities (HPC); enhancing the method for reference data preparation. Reference data […]
=> The MUSCATE processing centre at CNES, which belongs to French THEIA land data centre, produces and distributes all the Landsat 8 data acquired above France at Level 2A. Level 2A products contain surface reflectances after atmospheric correction, and a very good cloud mask. LANDSAT 8 first routine data had been acquired on April 13th […]
=> Up to now, over France, there is no Land Cover Map generated annually at a decameter resolution. The Corine Land Cover map, which is widely used, is only produced every 5 years, and 2012 version was issued in 2015. This map is mainly produced using photo interpretation, and therefore requires a very large amount of […]
=> With the new availability of repetitive image time series after atmospheric correction over France from the Theia Land Data Centre, it is now possible to imagine the automatic production of land cover maps continuously with the availability of new images. In the framework of the SYRHIUS project, a prototype was developed at CESBIO to assess the […]
=> I am not the kind of person to give lessons or to blame my colleagues, but I have to tell that some of them do not work on Sundays. And their excuses are variable and numerous : family, errands, work in the flat/house or in the garden, the necessity to rest from stressful weeks, […]
=> At CESBIO, we are developing land cover map production techniques, for high resolution image time series, similar to those which will soon be provided by Venµs and Sentinel-2. As soon as the SPOT4 (Take5) data were available over our study area (Sudmipy site in South West France), we decided to assess our processing chains […]
=> Land cover and land use maps Although different, the terms land use and land cover are often used as synonymous. From Wikipedia Land cover is the physical material at the surface of the earth. Land covers include grass, asphalt, trees, bare ground, water, etc. There are two primary methods for capturing information on land […]