Upper air soundings during POLARSTERN cruise ANT-XXI/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 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 sounding 常规操作为每日一次，旨在测量空气压力、温度、相对湿度以及风向的垂直分布。本数据集采用充填氦气的气球（TOTEX 600克、800克）搭载 Vaisala RS92-SGPW 无线电探空仪进行采集。在条件允许的情况下，发射时间约在 10 UTC 左右。采用 TEMP 格式 FM-35 的浓缩测量数据及时传输至全球电信系统 GTS，为全球天气预报提供数据支持。垂直剖面数据每隔 5-10 秒采集一次，从而实现约 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，直至气球破裂高度，通常位于 25 至 37 公里的高度范围内。