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The Atlantic inflow to the Saharan heat low: observations and modelling

The inflow of relatively cold and stably stratified air from the Atlantic Ocean into western Mauritania and into the southwestern part of the Saharan heat low is studied using the mesoscale COSMO model. This model was used to provide operational forecasts for the GERBILS field campaign, which was conducted by the Met Office in West Africa in June 2007. The forecasts were validated against airborne measurements as well as satellite imagery and were found to represent the main synoptic features of the region accurately.