TY - SER ID - kniglanglo2005uasd T1 - Upper air soundings during POLARSTERN cruise ANT-XXI/2 AU - König-Langlo, Gert PY - 2005 JF - Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven PB - PANGAEA DO - 10.1594/PANGAEA.849352 UR - https://doi.org/10.1594/PANGAEA.849352 N2 - The upper air soundings are normally performed once a day to measure vertical profiles of air pressure, temperature, relative humidity and the wind vector. Helium filled balloons (TOTEX 600 g, 800 g) were used to carry Vaisala RS92-SGPW radiosondes. Whenever possible, the launches were performed about 10 UTC. Condensed measurements (TEMP Format FM-35) were transferred without delay into the Global Telecommunication System GTS were they contribute for the world wide weather forecasts. The profile data were taken every 5-10 seconds which result in a vertical profile resolution of about 25-50 meter. The profiles start at the helideck 10 m above sea level and terminate at the burst level of the balloons, normally at heights between 25 and 37 km. ER -