Groß, Silke Martha and Wirth, Martin and Schäfler, Andreas and Fix, Andreas and Kaufmann, Stefan and Voigt, Christiane (2014) Potential of airborne lidar measurements for cirrus cloud studies. Atmospheric Measurement Techniques, 7 (8), pp. 2745-2755. Copernicus Publications. doi: 10.5194/amt-7-2745-2014. ISSN 1867-1381.
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Abstract
Aerosol and water vapour measurements were performed with the lidar system WALES of Deutsches Zentrum für Luft- und Raumfahrt (DLR) in October and November 2010 during the first mission with the new German research aircraft G55-HALO. Curtains composed of lidar profiles beneath the aircraft show the vertical and horizontal distribution and variability of water vapour mixing ratio and backscatter ratio above Germany. Two missions on 3 and 4 November 2010 were selected to derive the water vapour mixing ratio inside cirrus clouds from the lidar instrument. A good agreement was found with in situ observations performed on a second research aircraft flying below HALO. ECMWF analysis temperature data are used to derive relative humidity fields with respect to ice (RHi) inside and outside of cirrus clouds from the lidar water vapour observations. The RHi variability is dominated by small-scale fluctuations in the water vapour fields while the temperature variation has a minor impact. The most frequent in-cloud RHi value from lidar observations is 98%. The RHi variance is smaller inside the cirrus than outside of the cloud. 2-D histograms of relative humidity and backscatter ratio show significant differences for in-cloud and out-of-cloud situations for two different cirrus cloud regimes. Combined with accurate temperature measurements, the lidar observations have a great potential for detailed statistical cirrus cloud and related humidity studies.
Item URL in elib: | https://elib.dlr.de/90410/ | ||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||
Title: | Potential of airborne lidar measurements for cirrus cloud studies | ||||||||||||||||||||||||||||
Authors: |
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Date: | 26 August 2014 | ||||||||||||||||||||||||||||
Journal or Publication Title: | Atmospheric Measurement Techniques | ||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||||||
Gold Open Access: | Yes | ||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||
Volume: | 7 | ||||||||||||||||||||||||||||
DOI: | 10.5194/amt-7-2745-2014 | ||||||||||||||||||||||||||||
Page Range: | pp. 2745-2755 | ||||||||||||||||||||||||||||
Publisher: | Copernicus Publications | ||||||||||||||||||||||||||||
ISSN: | 1867-1381 | ||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||
Keywords: | cirrus, lidar, relative humidity, dial | ||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||||||||||
HGF - Program Themes: | Earth Observation | ||||||||||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||||||||||
DLR - Research theme (Project): | R - Atmospheric and climate research | ||||||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Lidar | ||||||||||||||||||||||||||||
Deposited By: | Groß, Silke Martha | ||||||||||||||||||||||||||||
Deposited On: | 01 Sep 2014 11:35 | ||||||||||||||||||||||||||||
Last Modified: | 06 Nov 2023 14:07 |
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