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| Titel |
Relationships between mineral dust and cloud properties in the West African Sahel |
| VerfasserIn |
L. Klüser, T. Holzer-Popp |
| 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 ; 10, no. 14 ; Nr. 10, no. 14 (2010-07-26), S.6901-6915 |
| Datensatznummer |
250008662
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| Publikation (Nr.) |
 copernicus.org/acp-10-6901-2010.pdf |
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| Zusammenfassung |
| Aerosol cloud interactions are known to be of great importance to many parts
of the climate system. Five years of observations from three different
satellites (Aqua, ENVISAT and Meteosat Second Generation) are used to
statistically analyse the relationship of mineral dust aerosol, separated
from other aerosol species, with monsoon season cloud state in the West
African Sahel domain. Additionally, observations of the Tropical Rainfall
Measuring Mission are used for discrimination of dry and wet seasons. The
aerosol-cloud-interactions are analysed separately by season and air mass in
order to minimise spurious correlations with meteorological conditions. The
detailed analysis uncovers different counteracting relationships of the
mineral dust aerosol with the cloud state, which is also evident from an
analysis of the spatial distribution patterns of cloud properties changes
with dust activity. The aerosol-cloud relationships found from the analysis
of this multiple year dataset are mainly consistent with the hypothesis of a
suppression of convective activity, but also indications of lifetime
enhancement and thus increased cloud cover and convective intensity are
found in some subsets. |
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