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| Titel |
A decadal cirrus clouds climatology from ground-based and spaceborne lidars above the south of France (43.9° N–5.7° E) |
| VerfasserIn |
C. Hoareau, P. Keckhut, V. Noel, H. Chepfer, J.-L. Baray |
| 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 ; 13, no. 14 ; Nr. 13, no. 14 (2013-07-23), S.6951-6963 |
| Datensatznummer |
250018773
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| Publikation (Nr.) |
 copernicus.org/acp-13-6951-2013.pdf |
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| Zusammenfassung |
| This study provides an analysis of cirrus cloud properties at midlatitude
in the southern part of France from ground-based and spaceborne lidars. A
climatology of cirrus cloud properties and their evolution over more than
12 yr is presented and compared to other mid-latitude climatological
studies. Cirrus clouds occur ~37% of the total observation
time and remain quasi-constant across seasons with a variation within
~5% around the mean occurrence. Similar results are
obtained from CALIOP and the ground-based lidar, with a mean difference in
occurrence of ~5% between both instruments. From the
ground-based lidar data, a slight decrease in occurrence of
~3% per decade is observed but found statistically insignificant. Based on
a clustering analysis of cirrus cloud parameters, three distinct classes
have been identified and investigations concerning their origin are
discussed. Properties of these different classes are analysed, showing that
thin cirrus in the upper troposphere represent ~50% of
cloud cover detected in summer and fall, decreasing by 15–20% for other
seasons. |
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