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Potential of Airborne Lidar Observations of Water Vapour Transport

Kiemle, Christoph and Schäfler, Andreas and Dörnbrack, Andreas and Fix, Andreas and Wirth, Martin and Rahm, Stephan (2011) Potential of Airborne Lidar Observations of Water Vapour Transport. THORPEX European Regional Meeting, 24.-27.5.2011, Karlsruhe.

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Abstract

The combination of a water vapour and a wind lidar on an aircraft enables the study of a variety of atmospheric transport processes associated with reduced predictability over remote and data sparse areas such as oceans. The instrument combination was successfully deployed on board the DLR Falcon research aircraft in the field experiments COPS 2007 (Central Europe), and THORPEX-IPY (Norway) and T-PARC (Japan) in 2008, focusing on boundary layer processes, polar lows, and observations in the vicinity of tropical cyclones and calculated sensitive regions. The lidars can portray the two-dimensional water vapour and wind variability, as well as the horizontal and vertical moisture transport with high accuracy and spatial resolution along the flight path in cloud-free areas. The wind lidar is operated either in conical-scanning mode with 20° off-nadir angle for 3-d wind field profiles, or in nadir-viewing mode for profiles of vertical wind speed. Eddy correlation of the latter with the water vapour lidar data provides profiles of the latent heat flux with high vertical resolution above land or water. Spectral analyses of long-range lidar cross-sections give insight into dominant transport and mixing processes from turbulent to meso-scales. HALO will offer more opportunities to reach data-sparse regions critical to high-impact weather over Europe, such as the North Atlantic Ocean.

Document Type:Conference or Workshop Item (Speech)
Title:Potential of Airborne Lidar Observations of Water Vapour Transport
Authors:
AuthorsInstitution or Email of Authors
Kiemle, ChristophDLR-IPA
Schäfler, AndreasDLR-IPA
Dörnbrack, AndreasDLR-IPA
Fix, AndreasDLR-IPA
Wirth, MartinDLR-IPA
Rahm, StephanDLR-IPA
Date:26 May 2011
Status:Published
Keywords:Flugzeuggetragenes Wasserdampf-Lidar, Doppler-Windlidar, Feuchtetransport, Advektion, Konvektion, Variabilität
Event Title:THORPEX European Regional Meeting
Event Location:Karlsruhe
Event Type:international Conference
Event Dates:24.-27.5.2011
Organizer:IMK-KIT
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 10:08
Last Modified:25 Oct 2011 10:08

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