Upper air soundings during POLARSTERN cruise ANT-XII/3@en

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 RS80 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.高空大气探测（upper air soundings）通常每日开展一次，用于获取气压、气温、相对湿度与风矢量的垂直廓线数据。该探测采用充装氦气的气球（TOTEX 600 g、800 g规格）搭载维萨拉RS80型无线电探空仪（radiosonde）。在条件允许的情况下，放飞作业通常安排在协调世界时（UTC）10时左右进行。经压缩的探测数据（采用TEMP格式FM-35）会被即时传输至全球电信系统（Global Telecommunication System, GTS），并在此系统中为全球天气预报提供数据支撑。探测数据每5至10秒采集一次，由此可获得约25至50米的垂直廓线分辨率。该探测廓线的起始高度为直升机甲板所在的海拔10米处，终止于气球爆裂高度，通常介于25至37千米之间。