Low atmosphere turbulence at Dome C preliminary results

We discuss the first two months of low altitude atmospheric turbulence at the Antarctic site of Dome C. Using a mini-SODAR, the first 890m of the atmosphere were sampled. It was found that between 9 Feb and 17 Apr 2003, the turbulence was concentrated below a 120m boundary layer that exhibited a clear diurnal cycle. This boundary layer height is less than half as thick as that at the South Pole (270m) as measured by the same instrument. It was also found that for the same period, the ground level wind at Dome C was also half that at the