Upper air soundings during POLARSTERN cruise ANT-XIII/5

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.高空大气探测通常每日开展一次，用于获取气压、气温、相对湿度及风矢量的垂直廓线。本次探测采用充氦气球（TOTEX 600克、800克）搭载维萨拉RS80型无线电探空仪。在条件允许的情况下，探空发射通常安排在协调世界时（UTC）10时左右。经压缩的观测数据采用TEMP格式FM-35标准，会被实时传输至全球电信系统（Global Telecommunication System，GTS），为全球天气预报业务提供数据支撑。廓线数据每5至10秒采集一次，由此得到的垂直廓线分辨率约为25至50米。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。