Upper air soundings during POLARSTERN cruise ARK-IX/2

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.

高空探空观测通常每日进行一次，以测量气压、温度、相对湿度以及风向的垂直分布。本研究采用氦气填充的气球（TOTEX 600 g，800 g）携带 Vaisala RS80 无线电探空仪。在条件允许的情况下，观测发射时间约为 UTC 10 时。压缩后的测量数据（TEMP 格式 FM-35）即刻传输至全球电信系统 GTS，为全球天气预报提供数据支持。探空数据每 5-10 秒采集一次，从而实现了约 25-50 米的垂直剖面分辨率。剖面数据从海平面以上 10 米的直升机平台开始，直至气球爆裂高度，通常在 25-37 公里之间。