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Observations close to source and at a receptor site

AMMA/DODO/GERBILS. Looking at modifications of dust physico-chemical and optical properties due to aging P. Formenti -LISA. Observations close to source and at a receptor site Source regions: data from previous campaigns (AMMA/DODO/GERBILS) + FENNEC (June 2011) – aircraft and surface sampling

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Observations close to source and at a receptor site

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  1. AMMA/DODO/GERBILS Looking at modifications of dust physico-chemical and optical properties due to aging P. Formenti -LISA • Observations close to source and at a receptor site • Source regions: data from previous campaigns (AMMA/DODO/GERBILS) + FENNEC (June 2011) – aircraft and surface sampling • Receptor site: Puerto Rico during PRADACS (June-July 2011) Nord-tropical Atlantic PRADACS FENNEC Reid et al., 2003

  2. Processes to be investigated • Mixing • Heterogeneous reactions • Changes in size distribution due to deposition • Changes in shape distribution Nord-tropical Atlantic PRADACS Reid et al., 2003

  3. Measurements • Full chemical/mineralogical characterisation • Bulk filter sampling • X-ray fluorescence, X-Ray diffraction, X-ray absorption, E-SEM&E-TEM analysis, chemical extraction method for iron oxides • Number size distribution • GRIMM OPC • Gas tracer concentrations • Ozone, CO, SO2…. Nord-tropical Atlantic PRADACS Reid et al., 2003

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