The GCOS Secretariat, located at the WMO headquarters in Geneva, Switzerland, supports the activities of the Steering Committee, the GCOS panels and the GCOS programme as a whole.
Secretariat members
| Anthony Rea | Director |
| Magaly Robbez | Administrative Assistant |
| Simon Eggleston | Scientific Officer |
| Caterina Tassone | Scientific Officer |
| Tim Oakley | Network Manager |
| Valentin Aich | Associate Scientific Officer |
