One year field experiment has started on December 2011 at the French - Italian station of Concordia at Dome C, East Antarctic Plateau.The objective of the experiment is the study of the Drain Tray Element surface layer turbulent processes under stable/very stable stratifications, and the mechanisms leading to the formation of the warming events.A sodar was improved to achieve the vertical/time resolution needed to study these processes.
The system, named Surface Layer sodar (SL-sodar), may operate both in high vertical resolution (low range) and low vertical resolution handheld-machines (high range) modes.In situ turbulence and radiation measurements were also provided in the framework of this experiment.A few preliminary results, concerning the standard summer diurnal cycle, a summer warming event, and unusually high frequency boundary layer atmospheric gravity waves are presented.