| # | Participant organisation name | Country |
| 1 | Centre National de la Recherche Scientifique (CNRS) | France |
| 2 | Institut Mines-Telecom (IMT) | France |
| 3 | Consiglio Nazionale delle Ricerche (CNR) | Italy |
| 4 | Leibniz Institut für Troposphärenforschung (TROPOS) | Germany |
| 5 | Forschungszentrum Jülich GmbH (FZJ) | Germany |
| 6 | Karlsruher Institut für Technologie (KIT) | Germany |
| 7 | Bergische Universität Wuppertal (BUW) | Germany |
| 8 | Ilmatieteen Laitos (FMI) | Finland |
| 9 | Helsingin Yliopisto (UHEL) | Finland |
| 10 | University of Eastern Finland (UEF) | Finland |
| 11 | ICOS ERIC | Finland |
| 12 | Tampere University (TAU) | Finland |
| 13 | Paul Scherrer Institut (PSI) | Switzerland |
| 14 | Eidgenoessische Magerialpruefungs- und Forschungsanstalt (EMPA) | Switzerland |
| 15 | Norsk Institutt for Luftforskning (NILU) | Norway |
| 16 | Technical Universiteit Delft (TUD) | Netherlands |
| 17 | Lund University (ULUND) | Sweden |
| 18 | National Observatory of Athens (NOA) | Greece |
| 19 | Foundation for Research and Technology (FORTH) | Greece |
| 20 | National Institute of R&D for Optoelectronics (INOE) | Romania |
| 21 | Universitatea Alexandru Ioan Cuza Din Iasi (UAIC) | Romania |
| 22 | University College Cork (UCC) | Ireland |
| 23 | University of Manchester (UMAN) | United Kingdom |
| 24 | Fundacion Centro de Estudios Ambientales del Mediterraneo (CEAM) | Spain |
| 25 | Agencia Estatal de Meteorología (AEMET) | Spain |
| 26 | Universidad de Granada (UGR) | Spain |
| 27 | Consejo Superior de Investigaciones Científicas (CSIC) | Spain |
| 28 | The Cyprus Institute (CYI) | Cyprus |
| 29 | University of Warsaw (UW) | Poland |
| 30 | Aarhus University (AU) | Denmark |
| 31 | Czech Hydrometeorological Institute (CHMI) | Czech Republic |
| 32 | Zentralanstalt für Meteorologie und Geodynamik (ZAMG) | Austria |
| 33 | Medizinische Universität Innsbruck (MUI) | Austria |
| 34 | Universidade de Évora (UE) | Portugal |
| 35 | Institut Royal d’Aéronomie Spatiale de Belgique (BIRA-IASB) | Belgium |
| 36 | Eesti Maaulikool (EULS) | Estonia |
| 37 | Institute for Nuclear Research and Nuclear Energy (INRNE) | Bulgaria |
| 38 | Joint Research Centre – European Commission (JRC) | Belgium |
| 39 | Instituto Nacional de Técnica Aeroespacial (INTA) | Spain |
| 40 | University of Galway (UoG) | Ireland |
| 41 | ACTRIS ERIC | Finland |
