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Proceedings Paper

Where is Ridge A?
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Paper Abstract

First identied in 2009 as the site with the lowest precipitable water and best terahertz transmission on Earth, Ridge A is located approximately 150 km south of Dome A, Antarctica. To further rene this optimum location prior to deployment in 2012 of a robotic THz observatory, we have modelled the atmospheric transmission as a function of location over a 1,000,000 km square grid using three years of data from the Microwave Humidity Sounder on the NOAA-18 satellite. The modelling identies a broad area of exceptionally low water vapour close to the 4,000 metre elevation contour, reaching below 100 microns for extended periods of time.

Paper Details

Date Published: 17 September 2012
PDF: 9 pages
Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84445H (17 September 2012); doi: 10.1117/12.925512
Show Author Affiliations
Geoff Sims, The Univ. of New South Wales (Australia)
Craig Kulesa, Univ. of Arizona (United States)
Michael C. B. Ashley, The Univ. of New South Wales (Australia)
Jon S. Lawrence, Macquarie Univ. (Australia)
Australian Astronomical Observatory (Australia)
Will Saunders, Australian Astronomical Observatory (Australia)
John W. V. Storey, The Univ. of New South Wales (Australia)


Published in SPIE Proceedings Vol. 8444:
Ground-based and Airborne Telescopes IV
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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