Abstract
Recently, the unique capabilities of the African Monsoon Multidisciplinary Analysis (AMMA) Experiment, the Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF), the Geostationary Earth Radiation Budget (GERB) instrument, and the Spinning Enhanced Visible and Infrared Imager (SEVIRI) were combined effectively as part of a large international project: the Radiative Atmospheric Divergence using AMF, GERB data and AMMA Stations (RADAGAST), which took place in Niamey, Niger, in 2006. Important objectives of RADAGAST include (1) estimates of the radiative fluxes and divergence across the atmosphere, and (2) analysis of related meteorological and thermodynamical variables. In this study, we outline results of this project. Also, we show retrievals of aerosol properties from spectrally resolved solar measurements, the simulated and observed radiative fluxes at the surface, and outline factors that control the magnitude and variability of aerosol and radiative properties.
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