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| Titel |
Evolution of organic and inorganic components of aerosol during a Saharan dust episode observed in the French Alps |
| VerfasserIn |
G. Aymoz, J.-L. Jaffrezo, V. Jacob, A. Colomb, Ch. George |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 4, no. 11/12 ; Nr. 4, no. 11/12 (2004-12-09), S.2499-2512 |
| Datensatznummer |
250001426
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| Publikation (Nr.) |
 copernicus.org/acp-4-2499-2004.pdf |
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| Zusammenfassung |
| A Saharan dust event was observed in a rural area in the Maurienne Valley
(French Alps) in summer 2000. Detailed data on PM10, particle numbers,
and aerosol chemistry (ionic species and Elemental Carbon (EC) and Organic
Carbon (OC)) are presented. The comparative evolutions of particle numbers
and chemistry (calcium, sodium, and sulfate) show that the overall period
included two episodes of dust particles with very distinct chemistry,
followed by an episode with a large increase of the concentrations of
species with an anthropogenic origin. The overall data set does not indicate
large interactions between the dust particles and compounds from
anthropogenic origin (sulfate, nitrate) or with organic carbon, all of these
species showing very low concentrations. Simplistic calculations indicate
that these concentrations are consistent with our current knowledge of
adsorption processes of gases on mineral dust in a clean air mass. |
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