Upper air soundings are carried out routinely. They include profile measurements of pressure, temperature, relative humidity and wind vector. Vertical ozone profiles are also occasionally measured. Usually, the soundings start from the heliport (10 m above sea level) and end between 15 and 37 km.

For the soundings VAISALA radiosondes, carried by helium-filled balloons (TOTEX 350 - 1500) are used. The data is coded (FM35-Temp) and transferred directly to the Global Telecommunication System (GTS) by a Data Collecting Platform (DCP) where they contribute to weather forecasting.

To obtain the ozone profiles an additional ozone sensor (VAISALA, ECC5A/6A) has been attached to the radiosonde. The wind vector is determined with the aid of the OMEGA/GPS navigation system. Data reception and evaluation were originally carried out by a MicroCora System (VAISALA), however in 1993 the MicroCora was replaced by the DigiCora (VAISALA).

All data are archived in the Meteorological Information System at AWI MISAWI which offers an interactive access. A certain access is free for any scientific nonprofit use, see below. For further information please contact Gert König-Langlo. Upper air soundings are available since 29 December 1982. Recent soundings normally reach the database within some months after the measurements were taken. The data in the database can be retrieved directly in two different forms:

• Full Height Resolution (day by day)
• Mean Pressure Levels (up to one month at a time)

Additional, all soundings are archived in Pangaea. A kmz-file offeres data excess via Google Earth for all soundings untill June 2009.