GeoPackage of SAFRAN cells (Météo-France) in metropolitan France, integrating administrative, agricultural and hydric variables
The simulated DRIAS future climate projection data and the SAFRAN historical weather data (Système d’analyse fournissant des renseignements atmosphériques à la neige - Météo-France) use the same grid covering metropolitan France with 8km cells. To allow a selection of cells according to administrative (department, region), agricultural (land use, soil characteristics) and hydric (i.e. useful soil reserve) criteria, a characterisation of these cells was done.
A spatial layer of the cell contours (squares) was generated from the geographical coordinates of the cell centroids.
From the French Soil Geographical data base for France at 1 :1,000,000 (BDGSF), which corresponds to the French part of the European Geographic Soil Database, 7 data were calculated: moisture at field capacity, moisture at saturation, moisture at wilting point, soil depth, average, maximum and minimum available water capacity. Each cell is thus described by an approach using the characteristics of the dominant soils defined by the soil mapping units which themselves integrate the soil topological units. The R code used to calculate the soil characteristics is included and documented in the published dataset.
From the 2012 version of Corine Land Cover (CLC), which is a biophysical inventory of land cover and its evolution at 1:1,000,000, 9 data were calculated corresponding to the percentage of the cell occupation according to 9 of the 44 level 3 classes offered by CLC: annual crops associated with permanent crops (CLC 241), grassland (CLC 231), complex cropping systems and parcels (CLC 242), arable land excluding irrigation perimeters (CLC 211), orchards and small fruits (CLC 222), vineyards (CLC 221), deciduous forests (CLC 311), coniferous forests (CLC 312) and mixed forests (CLC 313).
Administrative information describing each cell was added: department, region before and after 2016. Note that some coastal cells are not included in the analysis because the land part was not the majority in the grid cell.
Using a Geographic Information System, 8602 meshes were thus characterised on the French territory. This information can be used to select different sets of cells based on their criteria and is used in particular in the SICLIMA web application carried by the INRAE AgroClim service unit and available to INRAE agents only in order to provide access to SAFRAN and DRIAS climatic data and to calculate agro-climatic and eco-climatic indicators based on these data.
This dataset may evolve and be enriched in the next years.