Upper air soundings during POLARSTERN cruise ANT-XXV/2

• Main Author: König-Langlo, Gert
• Format: Other/Unknown Material
• Language: English
• Published: PANGAEA 2009
• Subjects: AWI_Meteo; International Polar Year (2007-2008); IPY; Meteorological Long-Term Observations @ AWI; Berichte zur Polar- und Meeresforschung; International Polar Year; Reports on Polar and Marine Research
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.845089; https://doi.org/10.1594/PANGAEA.845089

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.