Upper air soundings during POLARSTERN cruise PS93.2 (ARK-XXIX/2.2)

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 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。本研究中，采用了充填氦气的气球（TOTEX 600 g，800 g）携带 Vaisala RS92-SGPW 射频探空仪。在条件允许的情况下，观测发射通常于约 10 UTC 时进行。采用 TEMP 格式 FM-35 的浓缩测量数据被即时传输至全球电信系统 GTS，为全球天气预报作出贡献。垂直剖面数据每 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 米的直升机甲板开始，直至气球爆裂高度，通常位于 25 至 37 公里的高度范围内。