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Potential of airborne lidar measurements for cirrus cloud studies

Groß, Silke 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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Official URL: http://www.atmos-meas-tech.net/7/2745/2014/amt-7-2745-2014.html

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/
Document Type:Article
Title:Potential of airborne lidar measurements for cirrus cloud studies
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Groß, SilkeDLR, IPAUNSPECIFIED
Wirth, MartinDLR, IPAUNSPECIFIED
Schäfler, AndreasDLR, IPAUNSPECIFIED
Fix, AndreasDLR, IPAUNSPECIFIED
Kaufmann, StefanDLR, IPAUNSPECIFIED
Voigt, ChristianeDLR, IPAUNSPECIFIED
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 - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Groß, Silke Martha
Deposited On:01 Sep 2014 11:35
Last Modified:02 May 2019 14:13

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