| No. | Name | Short name | Country | PIs |
| 1 | Max Planck Gesellschaft | MPG | Germany | |
| 1.1 (coord.) | Max Planck Institute for Meteorology | MPI-M | Germany | Hauke Schmidt, Claudia Timmreck |
| 1.2 | Max Planck Institute for Chemistry | MPI-C | Germany | Mark Lawrence, Andreas Baumgaertner |
| 2 | Laboratoire des Sciences du Climat et l'Environnement (CEA/CNRS) | CEA | France | Michael Schulz |
| 3 | University of Oslo | UiO | Norway | Jon Egill Kristjansson |
| 4 | Center for International Climate and Environmental Research | Cicero | Norway | Asbjorn Aaheim |
