Universität zu Köln

Pauscher, Lukas ORCID: 0000-0003-3096-5674, Vasiljevic, Nikola ORCID: 0000-0002-9381-9693, Callies, Doron, Lea, Guillaume, Mann, Jakob ORCID: 0000-0002-6096-611X, Klaas, Tobias ORCID: 0000-0002-5437-621X, Hieronimus, Julian, Gottschall, Julia, Schwesig, Annedore, Kuehn, Martin and Courtney, Michael (2016). An Inter-Comparison Study of Multi- and DBS Lidar Measurements in Complex Terrain. Remote Sens., 8 (9). BASEL: MDPI. ISSN 2072-4292

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Abstract

Wind measurements using classical profiling lidars suffer from systematic measurement errors in complex terrain. Moreover, their ability to measure turbulence quantities is unsatisfactory for wind-energy applications. This paper presents results from a measurement campaign during which multiple WindScanners were focused on one point next to a reference mast in complex terrain. This multi-lidar (ML) technique is also compared to a profiling lidar using the Doppler beam swinging (DBS) method. First- and second-order statistics of the radial wind velocities from the individual instruments and the horizontal wind components of several ML combinations are analysed in comparison to sonic anemometry and DBS measurements. The results for the wind speed show significantly reduced scatter and directional error for the ML method in comparison to the DBS lidar. The analysis of the second-order statistics also reveals a significantly better correlation for the ML technique than for the DBS lidar, when compared to the sonic. However, the probe volume averaging of the lidars leads to an attenuation of the turbulence at high wave numbers. Also the configuration (i.e., angles) of the WindScanners in the ML method seems to be more important for turbulence measurements. In summary, the results clearly show the advantages of the ML technique in complex terrain and indicate that it has the potential to achieve significantly higher accuracy in measuring turbulence quantities for wind-energy applications than classical profiling lidars.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pauscher, Lukas UNSPECIFIED orcid.org/0000-0003-3096-5674 UNSPECIFIED Vasiljevic, Nikola UNSPECIFIED orcid.org/0000-0002-9381-9693 UNSPECIFIED Callies, Doron UNSPECIFIED UNSPECIFIED UNSPECIFIED Lea, Guillaume UNSPECIFIED UNSPECIFIED UNSPECIFIED Mann, Jakob UNSPECIFIED orcid.org/0000-0002-6096-611X UNSPECIFIED Klaas, Tobias UNSPECIFIED orcid.org/0000-0002-5437-621X UNSPECIFIED Hieronimus, Julian UNSPECIFIED UNSPECIFIED UNSPECIFIED Gottschall, Julia UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwesig, Annedore UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuehn, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Courtney, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-263619
DOI:	10.3390/rs8090782
Journal or Publication Title:	Remote Sens.
Volume:	8
Number:	9
Date:	2016
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	2072-4292
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language WIND LIDARS; TURBULENCE; VELOCITY; ERROR Multiple languages Remote Sensing Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26361