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| Titel |
Boundary layer aerosol size distribution, mass concentration and mineralogical composition in Morocco and at Cape Verde Islands during SAMUM I-II |
| VerfasserIn |
K. Kandler, K. Lieke |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021989
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| Zusammenfassung |
| The Saharan Mineral Dust Experiment (SAMUM) is dedicated to the understanding of the
radiative effects of mineral dust. Two major field experiments were performed: A first joint
field campaign took place at Ouarzazate and near Zagora, southern Morocco, from May 13 to
June 7, 2006. Aircraft and ground based measurements of aerosol physical and chemical
properties were carried out to collect a data set of surface and atmospheric columnar
information within a major dust source. This data set combined with satellite data provides
the base of the first thorough columnar radiative closure tests in Saharan dust. A second field
experiment was conducted during January–February 2008, in the Cape Verde Islands region,
where about 300 Tg of mineral dust are transported annually from Western Africa
across the Atlantic towards the Caribbean Sea and the Amazon basin. Along its
transport path, the mineral dust is expected to influence significantly the radiation
budget – by direct and indirect effects – of the subtropical North Atlantic. We are
lacking a radiative closure in the Saharan air plume. One focus of the investigation
within the trade wind region is the spatial distribution of mixed dust/biomass/sea salt
aerosol and their physical and chemical properties, especially with regard to radiative
effects.
We report on measurements of size distributions, mass concentrations and mineralogical
composition conducted at the Zagora (Morocco) and Praia (Cape Verde islands) ground
stations. The aerosol size distribution was measured from 20 nm to 500 |
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