Upper air soundings during POLARSTERN cruise ANT-X/7@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、相对湿度以及风矢量的垂直廓线（vertical profiles）。本次探测使用填充氦气的TOTEX 600 g、800 g型气球，搭载维萨拉（Vaisala）RS80型无线电探空仪（radiosondes）。在条件允许时，探空施放均安排在协调世界时（UTC）10时左右。经压缩的探测数据（采用TEMP格式FM-35）会即时传输至全球电信系统（Global Telecommunication System, GTS），为全球天气预报提供数据支撑。探测廓线数据的采集间隔为5至10秒，对应垂直廓线分辨率约为25至50米。该廓线数据从海拔10米的直升机甲板（helideck）处开始采集，直至气球爆裂高度（burst level）终止，常规探测高度区间为25至37千米。