The system is operated by staff from the German weather service (DWD). Scientific co-use is possible according to prior agreement with AWI Logistics and Principal Investigator of the Polarstern Meteorological Observatory (Holger Schmithüsen). Helium is calculated to supply one 600 gramm balloon per day. If additional radio sonde ascents are planned, the user has to organize the additional sondes, balloons and helium. 

Summary






Contacts


Components

The system consists of a sounding PC, electronic unit "DigiCora", ground check set, GPS antenna, telemtry antenna, Helium filling unit.



Position


Data logging, storage and archiving

Logged parameters


Central geographical ship's position and time standard

Time synchronising is regulated via onboard NTP server.
Geographical ship's position via unit's GPS receiver.

Rawdata storage on board 

Mass data: The data acquisition software creates rawdata on the local drive of the sounding computer and in the mass storage.



|| root directory | data01 ||
|| directory name | CruiseNo \\ e.g. \\ ANT25_3 ||
|| file name | DBLK_YYYYMMDD_hhmmss.mwx || 
|| Data volume (MB per day) ca | 16 or 32 || 
|| Number of files per day ca | 1 or 2 ||

Data archiving on land 

After the cruise, the operator transfers the measurement data along with required meta data to AWI. After consultation with the data scientist and AWI Logistics they are uploaded to the PANGAEA repository. Then, the data (including meta data) can be extracted from https://www.pangaea.de/ (for authorized users only).


|| File format(s) | *.txt || 
|| Calibration certificates | NO ||

Documentation