Upper air soundings during POLARSTERN cruise PS103 (ANT-XXXII/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, BUFR) 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.

本数据集的高空大气探测（upper air sounding）通常每日开展一次，用于获取气压、气温、相对湿度和风矢量的垂直廓线数据。实验采用充氦气球（规格为TOTEX 600 g、800 g）搭载维萨拉RS92-SGPW型无线电探空仪（radiosonde）。只要条件允许，探空发射均安排在协调世界时（Coordinated Universal Time，UTC）10时左右进行。经压缩的观测数据（格式为TEMP FM-35、BUFR）会无延迟地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。该廓线数据每5至10秒采集一次，由此可获得约25至50米的垂直廓线分辨率。所有垂直廓线均起始于海拔10米的直升机甲板，终止于气球的爆破高度，通常介于25至37千米之间。