Monitoring the optical turbulence in the surface layer at Dome C, Antarctica, with sonic anemometers

E. Aristidi, J. Vernin, E. Fossat, F. X. Schmider, T. Travouillon, C. Pouzenc, O. Traullé, C. Genthon, A. Agabi, E. Bondoux, Z. Challita, D. Mékarnia, F. Jeanneaux, G. Bouchez

Research output: Contribution to journalArticlepeer-review

Abstract

The optical turbulence above Dome C in winter is mainly concentrated in the first tens of metres above the ground. Properties of this so-called surface layer (SL) were investigated during the period 2007-2012 by a set of sonic anemometers placed on a 45 m high tower. We present the results of this long-term monitoring of the refractive index structure constant C2 n within the SL, and confirm its thickness of 35 m. We give statistics of the contribution of the SL to the seeing and coherence time. We also investigate properties of large-scale structure functions of the temperature and show evidence of a second inertial zone at kilometric spatial scales.

Original languageEnglish
Pages (from-to)4304-4315
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Volume454
Issue number4
DOIs
Publication statusPublished - 21 Dec 2015
Externally publishedYes

Keywords

  • Atmospheric effects
  • Methods: data analysis
  • Site testing
  • Turbulence

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