Using a Sodar to measure optical turbulence and wind speed for the Thirty Meter Telescope site testing. Part II: Comparison with independent instruments

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DOIResolve DOI: http://doi.org/10.1007/s10546-011-9644-y
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TypeArticle
Journal titleBoundary-Layer Meteorology
ISSN0006-8314
Volume141
Issue2
Pages289300; # of pages: 12
SubjectCorrelation coefficient; Differential image motion monitors; Multi-aperture scintillation sensors; Optical turbulence; Regression slope; Sodar; Sonic anemometer; Thirty Meter Telescope; Turbulence measurements; Wind speed; Atmospheric boundary layer; Atmospheric thermodynamics; Optical correlation; Optical telescopes; Troposphere; Wind effects; Wind power; anemometer; astronomy; optical property; turbulent boundary layer; wind velocity
AbstractIn the second part of this study, we compare both the wind speed and turbulence given by the Sodars with independent sets of measurements. In the case of the wind speed we compare the lowest Sodar data bin with a sonic anemometer located on a 7-m tower. The agreement between the two instruments was convincing with a regression slope near unity. The integrated turbulence measurements of the Sodars are compared with those obtained with a combined multi-aperture scintillation sensor and differential image motion monitor (MASS/DIMM) unit. It was found that the Sodars are indeed capable of quantitatively measuring optical turbulence, and agree with the MASS/DIMM measurements with a correlation coefficient of approximately 80% and a regression slope within 10% of unity. Additional acoustic noise in the Sodar data was identified using this comparison and removed from the data. © 2011 Springer Science+Business Media B.V.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Herzberg Institute of Astrophysics
Peer reviewedYes
NPARC number21271976
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Record identifier659ee925-a89f-4da3-87a3-c1202e6c2331
Record created2014-05-15
Record modified2016-05-09
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