Upper air soundings during POLARSTERN cruise ARK-IX/4

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.

高空探空通常每日开展一次，用于获取气压、气温、相对湿度与风矢量的垂直廓线。本次实验采用充氦气球（TOTEX 600克、800克）搭载维萨拉RS80型无线电探空仪（radiosonde）。在条件允许的情况下，探空释放时间通常安排在协调世界时（UTC）10时左右。经压缩的观测数据（TEMP格式FM-35）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。该廓线数据的采集间隔为5至10秒，对应垂直廓线的空间分辨率约为25至50米。探空廓线的起始高度为海拔10米的直升机甲板处，终止于气球爆裂高度，通常介于25至37千米之间。