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Land surface properties, such as vegetation cover and soil moisture, influence the partitioning of radiative energy between latent and sensible heat fluxes in daytime hours. During dry periods, soil-water deficit can limit evapotranspiration, leading to warmer and drier conditions in the lower atmosphere. Soil moisture can influence the development of(More)
We review the African Monsoon Multidisciplinary Analysis (AMMA) model inter-1. Background Global coupled climate models are not yet mature enough to simulate the West-African climate accurately (IPCC 2007, AR4). For example, a number of models do not locate the rainfall maxima over West Africa correctly during the monsoon season (Cook and Vizy, 2006). It is(More)
The AMMA-CATCH Gourma observatory site in Mali: Relating climatic var‐ iations to changes in vegetation, surface hydrology, fluxes and natural resources Gourma observatory site in Mali: Relating climatic variations to changes in vegetation, surface hydrology, fluxes and natural resources, This is a PDF file of an unedited manuscript that has been accepted(More)
African dust emission and transport exhibits variability on diurnal to decadal timescales and is known to influence processes such as Amazon productivity, Atlantic climate modes, regional atmospheric composition and radiative balance and precipitation in the Sahel. To elucidate the role of African dust in the climate system, it is necessary to understand(More)
The Sahelian zone is characterized by low and highly variable rainfall, which strongly affects the hydrology and the climate of the region and creates severe constraints for agriculture and water management. This study provides the first characterization of the rainfall regime in a poorly described region of Central Sahel, Gourma region (14.5° to 17.5° N(More)
This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract We investigate the impact of the representation of the boundary layer transport in a climate model on the representation of the near surface wind and dust emission, with a focus(More)
Analysis of the in situ and MODIS albedo variability at multiple timescales in the Sahel, J. Abstract The variability of the Sahelian albedo is investigated through the combined analysis of five years of in situ radiation data from the AMMA northernmost sites (Agoufou 1°28'W, 15°20'N and Bamba 1°24'W, 17°06'N Mali) and remotely sensed albedo from seven(More)
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