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23 June 2006 SODAR calibration for turbulence profiling in TMT site testing
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Abstract
As part of the Thirty Meter Telescope (TMT) site testing program, several instruments have been deployed to characterize the turbulence profiles of the candidate sites. To make such measurements in the boundary layer (height < 1,000m) we have installed several SODARs. Initially conceived to make 3-dimensional wind speed profiles, this instrument is also capable of measuring the temperature fluctuation constant C2T. Such a measurement requires calibration to become quantitative. We present in this paper a new calibration method that relies on additional kinetic heat flux measurements. This method is the first method to be fully portable to any other SODARs and does not rely on another turbulence profiler for cross calibration. This method will be used to calibrate all TMT SODAR data.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Travouillon "SODAR calibration for turbulence profiling in TMT site testing", Proc. SPIE 6267, Ground-based and Airborne Telescopes, 626720 (23 June 2006); doi: 10.1117/12.671549; https://doi.org/10.1117/12.671549
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