Grilles de pluies mensuelles spatialisées de l'IRD-HSM sur l'Afrique de l'Ouest et Centrale - Période 1940 à 1998

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Grilles de pluies mensuelles spatialisées de l'IRD-HSM sur l'Afrique de l'Ouest et Centrale - Période 1940 à 1998
Paturel, Jean-Emmanuel; Boubacar, Ibrahim; Crès, Agnès; Mahé, Gil; Rouché, Nathalie, 2026, "Grilles de pluies mensuelles spatialisées de l'IRD-HSM sur l'Afrique de l'Ouest et Centrale - Période 1940 à 1998", https://doi.org/10.23708/PSYXJP, DataSuds, V1
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Description

L’ORSTOM, aujourd’hui IRD (Institut de Recherche pour le Développement), est un institut français de recherche qui est implanté en Afrique depuis près de 60 ans. Depuis lors, les agroclimatologues et les hydrologues de l’institut collectent, critiquent et complètent des données hydroclimatiques sur l’Afrique de l’Ouest et Centrale. Ayant pour objectif de mettre en place des outils permettant une modélisation hydrologique de cette partie du monde, notre équipe, HydroSciences Montpellier (HSM), a élaboré une base de données hydroclimatiques et environnementales (SIEREM). À partir de toutes les données pluviométriques collectées, nous avons élaboré des grilles mensuelles de pluie au ½ degré carré, ce qui correspond aux latitudes de la zone concernée à une superficie de l’ordre de 2 750 km². Afin d’évaluer ces grilles, nous les avons comparées à celles mises à disposition par la « Climate Research Unit » de l’Université de « East Anglia » (CRU-UEA). Ces deux types de grilles apparaissent comme très semblables mais les grilles SIEREM sont calculées à partir d’un plus grand nombre de points de mesure et donnent de meilleurs résultats lorsqu’elles sont utilisées en entrée de modèles pluie-débit. Ces grilles sont téléchargeables gratuitement sur le site de la base SIEREM http://www.hydrosciences.fr/sierem/index.htm

(2006-02-03)
Subject Computer and Information Science; Earth and Environmental Sciences
Keyword Afrique, Scientific information systems, Precipitation, Base de données hydroclimatiques, Grilles de pluie mensuelle, Afrique de l'Ouest et Centrale, Modélisation, Hydroclimatic database, Monthly rainfall grids, West and Central Africa, Hydrological modelling
Related Publication Paturel, J. E., Boubacar, I., L’Aour, A., & Mahé, G. (2010). Analyses de grilles pluviométriques et principaux traits des changements survenus au 20ème siècle en Afrique de l’Ouest et Centrale. Hydrological Sciences Journal, 55(8), 1281–1288.
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GrillesPluiesIRD_HSM.png
GrillesPluiesIRD_HSM.png
IRD_HSM_Grilles de pluies mensuelles/PNG Image - 162.3 KB
Published Feb 11, 2026
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MD5: ab748faece1f233ee0b4dc455ebd5733
Exemple de la grille construite pour le mois de Juillet 1950
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GrillesPluiesSpatialiseesIRD_HSM.zip
IRD_HSM_Grilles de pluies mensuelles/ZIP Archive - 1.7 MB
Published Feb 11, 2026
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MD5: 10a35c7ee849b54bd7bb5411d6a0d964
Nom du fichier = Année (1940.txt) pour chaque enregistrement : "latitude (degrés décimaux) longitude (degrés décimaux) janvier (mm), février (mm),…, décembre (mm)"
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Readme_GrillesPluiesIRD_HSM.pdf
Readme_GrillesPluiesIRD_HSM.pdf
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Published Feb 11, 2026
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MD5: 4fc060391a8469a590c5d05709f8bba8
readme file ; fichier lisez moi
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