Monitoring the optical turbulence in the surface layer at Dome C, Antarctica, with sonic anemometers
arXiv:1811.07585 · doi:10.1093/mnras/stv2273
Abstract
The optical turbulence above Dome C in winter is mainly concentrated in the first tens of meters above the ground. Properties of this so-called surface layer (SL) were investigated during the period 2007-2012 by a set of sonics anemometers placed on a 45 m high tower. We present the results of this long-term monitoring of the refractive index structure constant Cn2 within the SL, and confirm its thickness of 35m. 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.
References in corpus (8)
- Dome C site testing: surface layer, free atmosphere seeing and isoplanatic angle statistics
- Site testing in summer at Dome C, Antarctica
- Comparison of the atmosphere above the South Pole, Dome C and Dome A: first attempt
- Mesoscale Optical Turbulence simulations at Dome C
- Mesoscale optical turbulence simulations above Dome C, Dome A and South Pole
- Excellent daytime seeing at Dome Fuji on the Antarctic plateau
- Mesoscale optical turbulence simulations at Dome C: refinements
- Typical duration of good seeing sequences at Concordia