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A&A 400, 11631172 (2003) DOI: 10.1051/0004-6361:20021814

Summary: A&A 400, 11631172 (2003)
DOI: 10.1051/0004-6361:20021814
c ESO 2003
Atmospheric turbulence at the South Pole and its implications
for astronomy
T. Travouillon1, M. C. B. Ashley1, M. G. Burton1, J. W. V. Storey1, and R. F. Loewenstein2
School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
University of Chicago, Yerkes Observatory, 373 W. Geneva Street, Williams Bay, WI 53191, USA
Received 12 August 2002 / Accepted 6 December 2002
Abstract. To investigate the low-atmosphere turbulence at the South Pole, we have measured, using a SODAR, the temperature
fluctuation constant (C2
T ) during winter, as a function of altitude up to 890 m. We found that the turbulence was on average
concentrated inside a boundary layer sitting below 270 m. While at the peak of winter the turbulence was stable and clearly
bounded, during other seasons there was a more complex turbulence profile which extended to higher altitudes. We found that
this behaviour could be explained by the horizontal wind speed conditions whose altitude profile closely matched the turbulence


Source: Ashley, Michael C. B. - School of Physics, University of New South Wales


Collections: Physics