Monitoring of climate data in the area of the Concordia station, at Dome C, from the XXXIV Antarctic campaign using radiosonde system (RDS) DOMEC. The climate parameters monitored are: Height (gps position), Pressure, Temperature, Humidity, Velocity of wind, Direction of the wind. The data are obtained doing upper-air measurements. Data are collected every day at 12UTC, all year round. The DOMEC is active since 2006-01-19. The RDS (VAISALA RS92) is launched into the atmosphere coupled to a balloon inflated with helium. The sonde rises with a speed of about 2-5 m / s up to a height of between 20 and 25 km. During the ascent all the parameters are acquired. The data obtained are coded both in a digital format (BUFR) and in text format and entered into the global network (GTS) of the World Meteorological Organization (WMO).