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Airborne lidar observations of mid-latitude upper-tropospheric water vapour variability

Kiemle, Christoph and Wirth, Martin and Fischer, Lucas and Craig, George (2011) Airborne lidar observations of mid-latitude upper-tropospheric water vapour variability. Water Vapour in the Climate System - WAVACS , 26.-28.9.2011, Paris, France.

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In order to characterize moisture variability in the troposphere, we have analysed long-range airborne differential-absorption lidar observations of water vapor measured during the COPS (Convective and Orographically-induced Precipitation Study) experiment conducted in summer 2007 by computing structure functions throughout the troposphere from 2 km up to 10 km. The specifc humidity variations over middle and south Europe show scaling from about 10 km to 100 km in horizontal range. The scaling laws show different characteristics at different heights. Typically humidity smoothness increases with height, while intermittency decreases. The results are consistent with a water vapor distribution determined at upper levels by a downscale cascade of variance by advective mixing, but increasingly influenced at lower levels by local injection of humidity by moist convection.

Document Type:Conference or Workshop Item (Speech)
Title:Airborne lidar observations of mid-latitude upper-tropospheric water vapour variability
AuthorsInstitution or Email of Authors
Kiemle, ChristophDLR IPA
Wirth, MartinDLR IPA
Fischer, LucasMIM, LMU München
Craig, GeorgeMIM, LMU München
Date:27 September 2011
Keywords:Wasserdampf in der freien Troposphäre, Flugzeug-Lidar, Strukturfunktion, Intermittenz, Advektion, Konvektion
Event Title:Water Vapour in the Climate System - WAVACS
Event Location:Paris, France
Event Type:international Conference, Workshop
Event Dates:26.-28.9.2011
Organizer:EU COST Aktion
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 LIDAR-Forschung und -Entwicklung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Dr.rer.nat. Christoph Kiemle
Deposited On:25 Oct 2011 10:07
Last Modified:25 Oct 2011 10:07

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