Instrument configuration for dual-Doppler lidar coplanar scans: METCRAX II

Nihanth Wagmi Cherukuru, Ronald Calhoun, Manuela Lehner, Sebastian W. Hoch, C. David Whiteman

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The second Meteor Crater Experiment (METCRAX II) was designed to study downslope- windstorm-type flows occurring at the Barringer Meteorite Crater in Arizona. Two Doppler wind lidars were deployed to perform a coplanar dual-Doppler lidar analysis to capture the two-dimensional (2-D) vertical structure of these flows in the crater basin. This type of analysis allows the flow to be resolved on a 2-D Cartesian grid constructed in the range height indicator scan overlap region. Previous studies have shown that the dominant error in the coplanar dual-Doppler analysis mentioned above is due to the under sampling of radial velocities. Hence, it is necessary to optimize the setup and choose a scan strategy that minimizes the under sampling of radial velocities and provides a good spatial as well as temporal coverage of these shortlived events. A lidar simulator was developed using a large Eddy simulation wind field to optimize the lidar parameters for METCRAX II field experiment. A retrieval technique based on the weighted least squares technique with weights calculated based on the relative location of the lidar range gate centers to the grid intersection point was developed. The instrument configuration was determined by comparing the simulator retrievals to the background wind field and taking into account the limitations of commercially available lidars.

Original languageEnglish (US)
Article number096090
JournalJournal of Applied Remote Sensing
Volume9
Issue number1
DOIs
StatePublished - Jan 1 2015

Keywords

  • Doppler wind lidar
  • METCRAX-II
  • coplanar scans
  • dual-Doppler lidar
  • warm air intrusions

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'Instrument configuration for dual-Doppler lidar coplanar scans: METCRAX II'. Together they form a unique fingerprint.

Cite this