A decadal cirrus clouds climatology from ground-based and spaceborne lidars above the south of France (43.9° N–5.7° E)
-
Published:2013-07-23
Issue:14
Volume:13
Page:6951-6963
-
ISSN:1680-7324
-
Container-title:Atmospheric Chemistry and Physics
-
language:en
-
Short-container-title:Atmos. Chem. Phys.
Author:
Hoareau C., Keckhut P., Noel V.ORCID, Chepfer H., Baray J.-L.ORCID
Abstract
Abstract. 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.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference43 articles.
1. Cadet, B., Goldfarb, L., Faduilhe, D., Baldy, S., Giraud, V., Keckhut, P., and Rechou, A.: A sub-tropical cirrus clouds climatology from Reunion Island (21° S, 55° E) lidar dataset, Geophys. Res. Lett., 30, 30.1–30.4, 2003. 2. Cadet, B., Giraud, V., Haeffelin, M., Rechou, A., and Baldy, S.: Improved retrievals of the optical properties of cirrus clouds by a combination of lidar methods, Appl. Opt., 44, 1726–1734, 2005. 3. Comstock, J. M., Ackerman, T. P., and Mace, G. G.: Ground-based lidar and radar remote sensing of tropical cirrus clouds at Nauru Island: Cloud Statistics and radiative impacts, J. Geophys. Res., 107, 4714, https://doi.org/10.1029/2002JD002203, 2002. 4. Desbois, M., Seze, G., and Szejwach, G.: Automatic classification of clouds on METEOSAT imagery: Application to high-level clouds, J. Appl. Meteor., 21, 401–412, 1982. 5. Dupont, J.-C., Haeffelin, M., Morille, Y., Noël, V., Keckhut, P., Winker, D. M., Comstock, J. M., Chervet, P., and Roblin, A.: Macrophysical and optical properties of midlatitude cirrus clouds from four ground-based lidars and collocated CALIOP observations, J. Geophys. Res., 115, D00H24, https://doi.org/10.1029/2009JD011943, 2010.
Cited by
26 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|