Upper air soundings during POLARSTERN cruise ANT-XX/2@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 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.高空探空（upper air soundings）通常每日开展一次，用于采集气压、气温、相对湿度与风矢量的垂直廓线。本次实验采用充氦气球（TOTEX 600 g、800 g）搭载维萨拉（Vaisala）RS92-SGPW型无线电探空仪（radiosondes）。只要条件允许，探空发射通常安排在世界协调时（UTC）10时左右。经压缩的探测数据（采用TEMP格式FM-35）被实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。探空数据每5至10秒采集一次，对应的垂直廓线分辨率约为25至50米。本次探空廓线起始于海拔10米处的直升机甲板，终止于气球爆裂高度，通常介于25至37千米之间。