Italian Antarctic Meteo-Climatological Observatory at MZS, Victoria Land and at Concordia (IAMCO-YOPP)Systematic surface meteorological observations and radio soundings are performed at Mario Zucchelli Station (MZS) and in the Victoria Land since 1987 and at Concordia Station (DC) since 2005. The project aims to collect data for extending time series, for meteo-climatological monitoring of the area, to provide data to the scientific community and for operational activities at the Base during the Italian Antarctic expeditions. At present, systematic meteorological observations are carried out by means of 16 automatic weather stations (AWS) running continuously throughout the year and two radiosonde systems (at MZS and DC).A ceilometer for the measurement of cloud base, running only during summer season, integrate the Observatory instrumentations.The Observatory will support YOPP activities, planning to double radiosoundings during IOP periods in the framework of SOP-SH at both stations: at MZS from twice to four times in a day (in cooperation with Korean Jang Bogo Station) and from once to twice a day at DC.Data will be available also on http://www.climantartide.it