Snodar

a new instrument to measure the height of the boundary layer on the Antarctic plateau

Colin S. Bonner, Michael C B Ashley, Jon S. Lawrence, John W V Storey, Daniel M. Luong-Van, Stuart G. Bradley

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

7 Citations (Scopus)

Abstract

the height of the atmospheric boundary layer on the Antarctic plateau is of particular importance to designers of optical telescopes for Antarctica. Snodar was developed at the University of New South Wales to measure the height of the atmospheric boundary layer at Dome A and Dome C on the Antarctic plateau. Snodar, or Surface layer Non-Doppler Acoustic Radar, is a true monostatic high-frequency acoustic radar (SODAR) operating between 5 kHz and 15 kHz. As the height of the boundary layer at Dome C is expected to be less then 30 m, and unknown at Dome A, Snodar was designed to have a minimum sampling height of 5 m with a vertical resolution of 1 m or better. Snodar uses a PC/104 computer to perform signal processing in real time, and a USB sound card for low-latency analog IO.Snodar was designed to run autonomously storing data on USB flash disks for retrieval the following summer, while uploading of data acquisition scripts and spot checking of data is possible via Iridium satellite through UNSW's PLATO facility.Snodar also incorporates a unique in-situ calibration sphere. We present details of the design and results from testing of Snodar.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy II
Place of PublicationBellingham, WA
PublisherSPIE
Pages1-7
Number of pages7
Volume7014
ISBN (Print)9780819472243
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventGround-based and Airborne Instrumentation for Astronomy II - Marseille, France
Duration: 23 Jun 200828 Jun 2008

Other

OtherGround-based and Airborne Instrumentation for Astronomy II
CountryFrance
CityMarseille
Period23/06/0828/06/08

Keywords

  • Antarctic plateau
  • Antarctica
  • Astronomy
  • Atmosphere
  • Boundary layer
  • Site-testing
  • SODAR

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