Division 5.2 In-situ Observations

The C3S shall not operate in situ observing systems but shall collect observations from data providers. It shall utilize existing European and international infrastructures. C3S shall not support financially the acquisition of data itself, but only activities allowing their processing (quality control, format and dissemination aspects) to meet operational requirements.

Several observation types (surface pressure, temperature, wind, humidity, wind profiles) shall be collected from land stations, drifting buoys, radiosondes, ships and aircrafts.