International Radagast experiment in Niamey, Niger: Changes and drivers of atmospheric radiation balance

Evgueni Kassianov, Sally A. McFarlane, James Barnard, Connor Flynn, Anthony Slingo, Nazim Bharmal, Gary Robinson, David Turner, Mark Miller, Thomas Ackerman, Ron Miller

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)537-540
Number of pages4
JournalAIP Conference Proceedings
StatePublished - 2009
EventInternational Radiation Symposium, IRS 2008 - Foz do Iguacu, Brazil
Duration: Aug 3 2008Aug 8 2008

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


  • Aerosol properties
  • Radiative fluxes
  • Satellite and surface observations


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