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Three-Dimensional Wind Retrieval: Application of MUSCAT to Dual-Doppler Lidar

Drechsel, Susanne and Mayr, Georg J. and Chong, Michel and Weissmann, Martin and Dörnbrack, Andreas and Calhoun, Ronald (2009) Three-Dimensional Wind Retrieval: Application of MUSCAT to Dual-Doppler Lidar. Journal of Atmospheric and Oceanic Technology, 26 (3), pp. 635-646. DOI: 10.1175/2008JTECHA1115.1.

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During the field campaign of the Terrain-induced Rotor Experiment (T-REX) in the spring of 2006, Doppler lidar measurements were taken in the complex terrain of the Californian Owens Valley for six weeks. While fast three-dimensional (3D) wind analysis from measured radial wind components is well established for dual weather radars, only the feasibility was shown for dual-Doppler lidars. A computationally inexpensive, variational analysis method developed for multiple-Doppler radar measurements over complex terrain was applied. The general flow pattern of the 19 derived 3D wind fields is slightly smoothed in time and space because of lidar scan duration and analysis algorithm. The comparison of extracted wind profiles to profiles from radiosondes and wind profiler reveals differences of wind speed and direction of less than 1.1 m s−1 and 3°, on average, with standard deviations not exceeding 2.7 m s−1 and 27°, respectively. Standard velocity–azimuth display (VAD) retrieval method provided higher vertical resolution than the dual-Doppler retrieval, but no horizontal structure of the flow field. The authors suggest a simple way to obtain a good first guess for a dual-lidar scan strategy geared toward 3D wind retrieval that minimizes scan duration and maximizes spatial coverage.

Document Type:Article
Title:Three-Dimensional Wind Retrieval: Application of MUSCAT to Dual-Doppler Lidar
AuthorsInstitution or Email of Authors
Drechsel, SusanneUniv. of Innsbruck, Innsbruck, A
Mayr, Georg J.Univ. of Innsbruck, Innsbruck, A
Chong, MichelCNRS–Univ. de Toulouse, Toulouse, F
Weissmann, MartinUNSPECIFIED
Dörnbrack, AndreasUNSPECIFIED
Calhoun, RonaldArizona State Univ., Tempe, AZ, USA
Date:March 2009
Journal or Publication Title:Journal of Atmospheric and Oceanic Technology
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 635-646
Keywords:dual Doppler, lidar,
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Martin Weissmann
Deposited On:27 Aug 2009 14:56
Last Modified:12 Dec 2013 20:41

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