| Sun Microsystems n.v./s.a. | Belgium |
| Université Catholique du Louvain - Institut d’Astronomie et de Géophysique Georges Lemaître | Belgium |
| Национален институт по метеорология и хидрология (National Institute of Meteorology and Hydrology) | Bulgaria |
| Danmarks Meteorologiske Institut | Denmark |
| Comparex Holding | Europe |
| Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique | France |
| Institut Pierre-Simon Laplace - Université Pierre et Marie Curie | France |
| Meteo-France - Centre National de Recherches Météorologiques | France |
| Alfred-Wegener-Institut - Helmholtz-Zentrum für Polar- und Meeresforschung | Germany |
| Verein zur Förderung des Deutschen Forschungsnetzes e.V. - DFN-Verein | Germany |
| Deutsches Klimarechenzentrum | Germany |
| IBM Deutschland GmbH - Scientific and Technical Computing EMEA | Germany |
| Institut für Energie- und Klimaforschung (IEK-8) – Troposphäre - Jülich | Germany |
| Institut für Meereskunde an der Universität Kiel | Germany |
| Freie Universität Berlin - Institut für Meteorologie | Germany |
| Hewlett Packard GmbH | Germany |
| Max-Planck-Gesellschaft - Max-Planck-Institut für Biogeochemie | Germany |
| Max-Planck-Gesellschaft - Max-Planck-Institut für Meteorologie | Germany |
| NEC Deutschland GmbH - European Supercomputer Systems | Germany |
| NEC Europe Ltd. - NEC Laboratories Europe - IT Research Division | Germany |
| Pallas GmbH | Germany |
| Silicon Graphics GmbH | Germany |
| T-Systems Solutions for Research GmbH | Germany |
| Universität Hamburg - Forschungsstelle Nachhaltige Umweltentwicklung | Germany |
| Konrad-Zuse-Zentrum für Informationstechnik Berlin | Germany |
| Aκαδημία Aθηνών - Κέντρον Ερεύνης Φυσικής της Ατμοσφαίρας και Κλιματολογίας (Academy of Athens - Research Centre for Atmospheric Physics and Climatology) | Greece |
| European Centre for Medium-Range Weather Forecasts | International |
| Irish Centre for High-End Computing | Ireland |
| Istituto Nazionale di Geofisica e Vulcanologia | Italy |
| Centro Euro-Mediterraneo sui Cambiamenti Climatici | Italy |
| Koninklijk Nederlands Meteorologisch Instituut | Netherlands |
| Bjerknessenteret for klimaforskning | Norway |
| Nansen Environmental and Remote Sensing Center | Norway |
| Uniwersytetu Warszawskiego - Interdyscyplinarne Centrum Modelowania Matematycznego i Komputerowego | Poland |
| Academia de Stiinte Tehnice din Romania | Romania |
| Academia Romana - Institutul de Geodinamica Sabba S. Stefanescu | Romania |
| Institut Català de Ciènces del Clima | Spain |
| Universidad de Alcalá - Departamento de Física y Matemáticas | Spain |
| [Universitat de Barcelona - Departament d’Astronomia i Meteorologia] | Spain |
| Lunds Universitet - Institutionen för Naturgeografi och ekosystemvetenskap | Sweden |
| Sveriges meteorologiska och hydrologiska institut | Sweden |
| Centro Svizzero di Calcolo Scientifico | Switzerland |
| [Scottish Alliance for Geosciences, Environment and Society - Centre for Earth System Dynamics] | United Kingdom |
| Cray UK Limited | United Kingdom |
| Met Office - Hadley Centre | United Kingdom |
| University of East Anglia - Climatic Research Unit - School of Environmental Sciences | United Kingdom |
| University of Reading - Department of Meteorology - Centre for Global Atmospheric Modelling | United Kingdom |