Evaluation of Single and Multiple Doppler Lidar Techniques to Measure Complex Flow During the XPIA Field Campaign

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dc.contributor.ORCID0000-0002-0990-8133 (Iungo, GV)en_US
dc.contributor.authorChoukulkar, A.en_US
dc.contributor.authorBrewer, W. A.en_US
dc.contributor.authorSandberg, S. P.en_US
dc.contributor.authorWeickmann, A.en_US
dc.contributor.authorBonin, T. A.en_US
dc.contributor.authorHardesty, R. M.en_US
dc.contributor.authorLundquist, J. K.en_US
dc.contributor.authorDelgado, R.en_US
dc.contributor.authorIungo, Giacomo V.en_US
dc.contributor.authorAshton, Ryanen_US
dc.contributor.authorDebnath, Mithuen_US
dc.contributor.authorBianco, L.en_US
dc.contributor.authorWilczak, J. M.en_US
dc.contributor.authorOncley, S.en_US
dc.contributor.authorWolfe, D.en_US
dc.contributor.utdAuthorIungo, Giacomo V.en_US
dc.contributor.utdAuthorAshton, Ryanen_US
dc.contributor.utdAuthorDebnath, Mithuen_US
dc.date.accessioned2018-08-20T16:28:42Z
dc.date.available2018-08-20T16:28:42Z
dc.date.created2017-01-23en_US
dc.date.issued2018-08-20
dc.description.abstractAccurate three-dimensional information of wind flow fields can be an important tool in not only visualizing complex flow but also understanding the underlying physical processes and improving flow modeling. However, a thorough analysis of the measurement uncertainties is required to properly interpret results. The XPIA (eXperimental Planetary boundary layer Instrumentation Assessment) field campaign conducted at the Boulder Atmospheric Observatory (BAO) in Erie, CO, from 2 March to 31 May 2015 brought together a large suite of in situ and remote sensing measurement platforms to evaluate complex flow measurement strategies. In this paper, measurement uncertainties for different single and multi-Doppler strategies using simple scan geometries (conical, vertical plane and staring) are investigated. The tradeoffs (such as time-space resolution vs. spatial coverage) among the different measurement techniques are evaluated using co-located measurements made near the BAO tower. Sensitivity of the single-/multi-Doppler measurement uncertainties to averaging period are investigated using the sonic anemometers installed on the BAO tower as the standard reference. Finally, the radiometer measurements are used to partition the measurement periods as a function of atmospheric stability to determine their effect on measurement uncertainty. It was found that with an increase in spatial coverage and measurement complexity, the uncertainty in the wind measurement also increased. For multi-Doppler techniques, the increase in uncertainty for temporally uncoordinated measurements is possibly due to requiring additional assumptions of stationarity along with horizontal homogeneity and less representative line-of-sight velocity statistics. It was also found that wind speed measurement uncertainty was lower during stable conditions compared to unstable conditions.en_US
dc.description.departmentErik Jonsson School of Engineering and Computer Scienceen_US
dc.identifier.bibliographicCitationChoukulkar, A., W. A. Brewer, S. P. Sandberg, A. Weickmann, et al. 2017. "Evaluation of single and multiple Doppler lidar techniques to measure complex flow during the XPIA field campaign." Atmospheric Measurement Techniques 10(1), doi:10.5194/amt-10-247-2017en_US
dc.identifier.issn1867-1381en_US
dc.identifier.issue1en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/5993
dc.identifier.volume10en_US
dc.language.isoenen_US
dc.publisherCopernicus GmbHen_US
dc.relation.urihttp://dx.doi.org/10.5194/amt-10-247-2017en_US
dc.rightsCC BY 3.0 (Attribution)en_US
dc.rights©2017 The Authors. All Rights Reserved.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.source.journalAtmospheric Measurement Techniquesen_US
dc.subjectDoppler radaren_US
dc.subjectOptical radaren_US
dc.subjectAir flow--Measurementen_US
dc.subjectNOAA/NCAR Boulder Atmospheric Observatoryen_US
dc.subjectRemote sensingen_US
dc.subjectStatisticsen_US
dc.subjectWinds--Measurementen_US
dc.subjectColorado--Erieen_US
dc.subjectMichiganen_US
dc.titleEvaluation of Single and Multiple Doppler Lidar Techniques to Measure Complex Flow During the XPIA Field Campaignen_US
dc.type.genrearticleen_US

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Iungo, Giacomo V.