The HydroSciences Montpellier Laboratory (HSM) has a long experience in collecting and managing hydro-climatological data. Thus, HSM had initiated a program to elaborate a reference dataset, in order to build monthly rainfall grids over the African continent. The large quantity of data collected (about 7000 measurement points were used in this project) allowed for interpolation using only observed data, with no statistical use of a reference period. The grids were significantly different in many places, especially in North Africa, Sahel, the horn of Africa, and the South Western coast of Africa, with HSM_SIEREM data (database HydroSciences Montpellier_Système d’Information Environnementales pour les Ressources en Eau et leur Modélisation) being closer to the observed rain gauge values.
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Isohyets of annual rainfall map of Africa
Isohyets of annual rainfall map of Africa
Nov 4, 2025
Mahé, Gil; Rouché, Nathalie; Dieulin, Claudine; Boyer, Jean-François; Boubacar, Ibrahim; Paturel, Jean-Emmanuel, 2025, "Isohyets of annual rainfall map of Africa", https://doi.org/10.23708/BAR411, DataSuds, V2
Result of a long experience in cooperation with the African meteorological departments and of the management of data bases, this map displays the annual rainfalls over a 60-year period. Maps representing rainfall over the whole African continent are rare, and a map dealing with o...
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