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| Titel |
5-year CALIPSO climatology of Saharan dust over North Africa and Europe |
| VerfasserIn |
Vassilis Amiridis, Stelios Kazadzis, Evangelos Gerasopoulos, Eleni Marinou, Alexandra Tsekeri, Olivier LeRille |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250084874
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| Zusammenfassung |
| We use monthly averages of CALIPSO level 2 backscatter product and a methodology for
dust extinction retrievals, in order to provide a 3D climatology of Saharan dust over Europe
and North Africa. The methodology is based on EARLINET ground-based measurements of
the dust lidar ratio and corrections for the dust component included in the CALIPSO polluted
dust aerosol type. The scheme is applied on a 1x1 degree horizontal resolution for a 5-year
period (2007-2011). Seasonal variations of Saharan dust transport over the Mediterranean and
towards Europe are identified, both in terms of frequency and intensity. Strong south-north
and west-east trends are observed and quantified and the contribution of pollution-dust
presence is estimated. Especially in the eastern part of the Mediterranean basin, the
concurrence of dust with pollution is more frequent, given the higher levels of local and
transported pollution over the area. Seasonal-mean extinction scale height metric, which
corresponds to the altitude at which 63% of the AOD lies below, is additionally
presented in order to characterize the vertical distribution features of dust transport. |
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