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| Titel |
Aerosol events in the broader Mediterranean basin based on 7-year (2000-2007) MODIS C005 data |
| VerfasserIn |
A. Gkikas, N. Hatzianastassiou, N. Mihalopoulos |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 9 ; Nr. 27, no. 9 (2009-09-23), S.3509-3522 |
| Datensatznummer |
250016646
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| Publikation (Nr.) |
 copernicus.org/angeo-27-3509-2009.pdf |
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| Zusammenfassung |
Aerosol events (their frequency and intensity) in the broader Mediterranean
basin were studied using 7-year (2000–2007) aerosol data of optical depth
(AOD at 550 nm) from the MODerate Resolution Imaging Spectroradiometer
(MODIS) Terra.
The complete spatial coverage of data revealed a significant spatial
variability of aerosol events which is also dependent on their intensity.
Strong events occur more often in the western and central Mediterranean
basin (up to 14 events/year) whereas extreme events (AOD up to 5.0) are
systematically observed in the eastern Mediterranean basin throughout the
year. There is also a significant seasonal variability with strong aerosol
events occurring most frequently in the western part of the basin in summer
and extreme episodes in the eastern part during spring. The events were also
analyzed separately over land and sea revealing differences that are due to
the different natural and anthropogenic processes, like dust transport
(producing maximum frequencies of extreme episodes in spring over both land
and sea) or forest fires (producing maximum frequencies in strong episodes
in summer over land). The inter-annual variability shows a gradual decrease
in the frequency of all aerosol episodes over land and sea areas of the
Mediterranean during the period 2000–2007, associated with an increase in
their intensity (increased AOD values). The strong spatiotemporal
variability of aerosol events indicates the need for monitoring them at the
highest spatial and temporal coverage and resolution. |
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