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Spatialisation fine des projections climatiques dans le bassin versant du Tleta, Nord Maroc

Les études locales de l'impact du changement climatique nécessitent des projections climatiques à haute résolution spatiale. Dans le cadre du projet de recherche ALMIRA, les agronomes et hydrologues souhaitent intégrer à leurs modèles des projections climatiques afin de caractériser le fonctionnement du bassin versant du Tleta à l'horizon des année...

Paléoenvironnements et variations paléohydrologiques du lac Tchad au cours des 12000 dernières années / Le Tchad des lac...

Introduction de la partie 1 "Les lacs tchadiens du Pléistocène à l'Anthropocène" / Le Tchad des lacs : les zones humides...

Contributions of internal variability and external forcing to the recent trends in the Southeastern Pacific and Peru-Chi...

In a warming world context, sea surface temperature (SST) off central-south Peru, northern Chile, and farther offshore increases at a slower rate than the global average since several decades (i.e., cools, relative to the global average). This tendency is synchronous with an interdecadal Pacific oscillation (IPO) negative trend since similar to 198...

Le lac Tchad dans le réchauffement climatique ouest-africain / Atlas du lac Tchad

Les changements climatiques actuels impactent le lac Tchad : après une période de sécheresse accrue depuis la fin des années 1960, un retour à de meilleures conditions pluviométriques au Sahel semble s'être amorcé au cours des années 1990. Alimenté principalement par le fleuve Chari doublé du Logone, le lac Tchad reflète les fluctuations climatique...

Hydrologic nonstationarity and extrapolating models to predict the future

This paper investigates the uncertainties linked to climate change impacts on runoff in four mesoscale basins (900 to 1800 km(2)) in the Mediterranean region. Runoff simulations were based on a daily conceptual model including a snow module. The model was calibrated and validated according to a differential split-sample test over a 20-year period a...

Regional climate modeling : advances, constraints and use for adaptation planning

This work aims to evaluate the performance of a hydrological balance model in a watershed located in northern Tunisia (wadi Sejnane, 378 km(2)) in present climate conditions using input variables provided by four regional climate models. A modified version (MBBH) of the lumped and single layer surface model BBH (Bucket with Bottom Hole model, in wh...

Comparison of downscaling methods for mean and extreme precipitation in Senegal

Study region: The study considers six precipitation stations located in Sene-gal, West Africa. Senegal is located in the Sahel, an area that is threatened byclimate variability and change. Both droughts and extreme rainfall have beenan issue in recent years. Study focus: Two different statistical downscaling techniques were appliedto the outputs of...

Projected climate change impacts on water resources in northern Morocco with an ensemble of regional climate models / Hy...

Projecting future drought in Mediterranean forests : bias correction of climate models matters !

Global and regional climate models (GCM and RCM) are generally biased and cannot be used as forcing variables in ecological impact models without some form of prior bias correction. In this study, we investigated the influence of the bias correction method on drought projections in Mediterranean forests in southern France for the end of the twenty-...