Assessment of Virtual Towers Performed with Scanning Wind Lidars and Ka-Band Radars during the XPIA Experiment

Julie Lundquist, Mithu Debnath, Giacomo Iungo, W. Brewer, Aditya Choukulkar, Ruben Delgado, Scott Gunter, John Schroeder, James Wilczak, Daniel Wolfe

Research output: Contribution to journalArticlepeer-review

17 Scopus Citations

Abstract

During the eXperimental Planetary boundary layer Instrumentation Assessment (XPIA) campaign, which was carried out at the Boulder Atmospheric Observatory (BAO) in spring 2015, multiple-Doppler scanning strategies were carried out with scanning wind lidars and Ka-band radars. Specifically, step-stare measurements were collected simultaneously with three scanning Doppler lidars, while two scanning Ka-band radars carried out simultaneous range height indicator (RHI) scans. The XPIA experiment provided the unique opportunity to compare directly virtual-tower measurements performed simultaneously with Ka-band radars and Doppler wind lidars. Furthermore, multiple-Doppler measurements were assessed against sonic anemometer data acquired from the meteorological tower (met-tower) present at the BAO site and a lidar wind profiler. This survey shows that - despite the different technologies, measurement volumes and sampling periods used for the lidar and radar measurements -- a very good accuracy is achieved for both remote-sensing techniques for probing horizontal wind speed and wind direction with the virtual-tower scanning technique.
Original languageAmerican English
Pages (from-to)1215-1227
Number of pages13
JournalAtmospheric Measurement Techniques
Volume10
Issue number3
DOIs
StatePublished - 2017

NREL Publication Number

  • NREL/JA-5000-68385

Keywords

  • Doppler lidars
  • eXperimental Planetary boundary layer Instrumentation Assessment
  • Ka-band radars
  • scanning wind lidars
  • XPIA

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