National scale potential recharge values for France
A national scale map that shows yearly LTA potential recharge values (mm/year) calculated over France. Values are calculated at daily time step and averaged over the period 1981 – 2010 The map presents the mean yearly potential groundwater recharge (refers to the part of the precipitation not stored in the soil, nor used by the vegetation) that infiltrates to potentially reach the aquifers calculated over the period 1981-2010 and at the spatial scale of 8 x 8 km grid cells and provided in mm/years
dataset
https://geoera.eu/projects/tactic/france_potentialrecharge
French
Environment
GEMET - INSPIRE themes, version 1.0:
Spatial scope:
INSPIRE priority data set:
GeoERA Keyword Thesaurus:
European Geoscience Registry - Projects:
Free:
Groundwater; Potential recharge; Great Britain; Long term average;
-5.795,
41.245,
9.673,
51.179
publication: 2021-04-07
min: 0.01
max: 8
CRS: Local - depth (http://www.opengis.net/def/crs/EPSG/0/1049)
grid
Bureau de Recherches Géologiques et Minières (BRGM)
,
France
email:
H.Bessiere@brgm.fr
Role: custodian
Data Quality
Effective precipitation is simulated at the daily time step for each 8x8 km gridcell, using the averaged result of three simple water balance models (Thornthwaite (1948), Edijatno & Michel (1989) and Dingman (2002)) and considering the maximum soil water content (French national soil map, DoneSol INRA (2014)). Water balance models are forced using the SAFRAN meteorological reanalysis data set available at the same resolution (Vidal et al., (2010)). To estimate an effective precipitation infiltration ratio (EPIR), average IDPR values (Mardhel et al., 2021) are compared to base flow computed using the Wallingford method (Gustard et al., 1992) on a set of representative and non-influenced French river basins. The EPIR values are then projected over the 8x8 km grid and multiplied by effective precipitation to obtain potential recharge.
Constraints
Metadata about metadata
60f54436-7658-4069-9f49-517d0a010833
Bureau de Recherches Géologiques et Minières (BRGM)
,
France
email:
H.Bessiere@brgm.fr
Role: point of contact
2022-04-04