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Communication incl. Poster: BibTeX citation key:  Borrman
Borrman, S., Kunkel, D., Frey, W., Law, K. S., Cairo, F., Somé, L., AMMA Burkina & AMMA-SCOUT M55. 2009. Aerosols and clouds in the tropical tropopause layer: In-situ measurements of microphysics and chemistry over West Africa. Work presented at Third International AMMA Conference, July 20—24, at Ouagadougou, Burkina Faso.
Added by: roussot 2009-10-19 18:44:33
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Categories: Aerosol and Chemistry, Atmospheric processes
Keywords: Aerosol
Creators: AMMA Burkina, AMMA-SCOUT M55, Borrman, Cairo, Frey, Kunkel, Law, Somé
Publisher: African Monsoon Multidisciplinary Analyses (Ouagadougou, Burkina Faso)
Collection: Third International AMMA Conference

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Abstract
This contribution presents data and interpretations of in-situ measurements of cloud and aerosol properties from the Upper Tropospheric/Lower Stratospheric (UT/LS) altitude region (up to 20 km) over West Africa. The instruments implemented on the Russian high altitude research aircraft M-55 “Geophysica” covered atmospheric particles with sizes between 10 nanometers and 1.5 millimeters and thus extend over particles freshly nucleated by gas-to-particle conversion to larger hydrometeors of cloud ice. The presented analyses of tropical tropopause layer (TTL) aerosol data, of the cirrus cloud data, and the measurements inside the large cloud system anvils or their outflows over West Africa are based on research flights conducted during the AMMA-SCOUT campaign in August 2006 in Ouagadougou, Burkina Faso. As these measurements are the first of its kind over tropical Africa, the corresponding data sets are of large value for research and modeling of radiative transfer, cloud and aerosol micropyhsics, as well as climate. The measurements obtained in Africa are juxtaposed to results of similar campaigns with “Geophysica” from other tropical locations (Darwin, Australia; Mahe, Seychelles; Aracatuba, Brazil).
Added by: roussot