| 1 | C1-CHAMBRE-1 | ETH Zürich (Switzerland) | Survival of Antimicrobial Resistant Strains in the Air | ChAMBRe, IT (ASC) | Physical access | Unavailable |
| 2 | C1-FORTH-MSC-2 | Institute of Physical Chemistry PAS (Poland) | The importance of sesquiterpene oxidation products for secondary organic aerosol formation – chamber experiments and field studies (SESQSOA) | FORTH-MSC, GR (MOB) | Physical access | Activity Report |
| 3 | C1-AURA-1 | University of Helsinki (Finland) | Aarhus Chamber Campaign on Evaporation, Partitioning, and Terpene Oxidation (ACCEPTO) | AURA, DK (ASC) | Physical access | Activity Report |
| 4 | C1-ISAF-IZO/Obs- 1 | University of Helsinki (Finland) | Chasing preindustrial aerosols at Izaña | ISAF – IZO, ES (OBS) | Combination of Physical and Remote access | Unavailable |
| 5 | C1- ISOLAB/CESAR-5 | Stockholm University (Sweden) | Isotopic characterization of greenhouse gases – CO CH4 and CO2 – in sub-Saharan Africa background and urban environment. | ISOLAB-UU @CESAR, NL (CL) | Remote access | Unavailable |
| 6 | C1-LACROS-1 | Swiss Federal Institute of Technology Zurich – ETH Zurich (Switzerland) | Dual operation of 35 and 94 GHz radar during a seeding experiment (DORSE) | LACROS, DE (MOB) | Combination of Physical and Remote access | Unavailable |
| 7 | C1-SAPHIR-1 | University of Lille (France) | Comparison of instruments detecting atmospheric organic peroxy radicals (ROxCOMP) | SAPHIR, DE (ASC) | Physical access | Unavailable |
| 8 | C1-AIDA-1 | CNRS (France) | AquaVIT-4 : International hygrometer intercomparison campaign | AIDA, DE (ASC) | Combination of Physical and Remote access | Unavailable |
| 9 | C1– CMN-PV -1 | University of Helsinki (Finland) | New particle formation and its influence on air pollution in Po Valley | CMN-PV, IT (OBS) | Combination of Physical and Remote access | Unavailable |
| 10 | C1-AGORA-1 | Institute of Meteorology and Climate Research Atmospheric Aerosol Research – IMK-AAF (Germany) | Modular Observation Solution for Earth System (MOSE) | AGORA, ES (OBS) | Physical access | Unavailable |
| 11 | C1-PACS-C2-1 | CNRS-IRCELYON (France) | Novel Molecular Understanding of Aerosol Formation (NUCLEATE) | PACS-C2, CH (ASC) | Physical access | Unavailable |
| 12 | C1-CHAMBRE-2 | University of Manchester (United Kingdom) | Validation of Real- time machine learning classification algorithms for the Detection of Airborne Pathogens using Novel Multi- Dimensional UV-LIF Spectrometers using Controlled ChamBRe Characterisation Experiments | ChAMBRe, IT (ASC) | Physical access | Unavailable |
| 13 | C1-ATMOS-1 | University of Modena and Reggio Emilia (Italy) | BBAC TO Athens (Black-Brown carbon Aerosol Campaign ThroughOut Athens) | ATMOS, GR (OBS) | Physical access | Activity Report |
| 14 | C1-MAC-1 | ETH Zürich (Switzerland) | Concentration and chemical composition contribution of Ice Nucleating particles from Biomass Burning emissions (IN-BB) | MAC, UK (ASC) | Physical access | Unavailable |
| 15 | C1-EVASO-1 | Instituto Nacional de Técnica Aeroespacial (Spain) | Lidar data In a RT model for dust direct radiative effect estimation and evaluation against solar measurements (LiRTaSoM) | EVASO, PT (OBS) | Physical access | Unavailable |
| 16 | C1-USRL-1 | University of Reading (United Kingdom) | Diurnal vAriation of the vertically resolved siZe distribution in the Saharan Air Layer (DAZSAL) | USRL, CY (MOB) | Combination of Physical and Remote access | Activity Report |
| 17 | C1-KASCs-1 | North-West University (South Africa) | Boreal and savanna fire aerosol ageing (BASFAA) | KASCs, FI (ASC) | Combination of Physical and Remote access | Unavailable |
| 18 | C1-CAO-1 | Karsa Oy (Finland) | Thermo Desorption – Multischeme chemical IONization inlet – Mass Spectrometer (TD-MION-MS) for atmospheric aerosol precursor and security research – proof of concept | CAO, CY (OBS) | Physical access | Unavailable |
| 19 | C1- EUPHORE/SMEAR II-1 | Aerosol d.o.o. (Slovenia) | Advanced carbonaceous aerosol apportionment using Total Carbon Analyzer and newly developed Aethalometer prototype with extended wavelength range (ACAA:TC-BC 9λ) | SMEAR II, FI (OBS), EUPHORE, ES (ASC) | Combination of Physical and Remote access | Unavailable |
| 20 | C1-RADO-3 | Universitat Politècnica de Catalunya (Spain) | Training of hands-on operation of Lidars and data analysis at RODA. | RADO, RO (OBS) | Physical access | Unavailable |
| 21 | C1– KASCs -2 | The Chinese University of Hong Kong (China) | Probing Reactivity and Hygroscopicity Changes of Methanesulfonic Acid against OH Heterogeneous Oxidation using a Smog Chamber (MSAOH_CHAM) | KASCs, FI (ASC) | Physical access | Unavailable |
| 22 | C1-RADO-2 | Czech Hydrometeorological Institute – CHMI / Institute of Chemical Process Fundamentals of the Czech Academy of Sciences – CAS (Czech Republic) | SCC setup, testing and data check for the CHMI lidar | RADO, RO (OBS) | Remote access | Unavailable |
| 23 | C1– CMN- PV/OPAR -1 | Stockholm University (Sweden) | Net interactions between aerosol populations, fog and clouds under natural and anthropogenic influences (NetAeFoCs) | CMN-PV, IT (OBS), OPAR, FR (OBS) | Combination of Physical and Remote access | Unavailable |
| 24 | C1-FKL-1 | University of Birmingham (United Kingdom) | Impact of shipping emissions on particulate matter pollution over the Eastern Mediterranean Sea (ISE-PM) | FKL, GR (OBS) | Combination of Physical and Remote access | Unavailable |
| 25 | C1-IASC-1 | Aix Marseille University (France) | PROXI : atmospheric fate and impact of Piperitone: Reactivity, OXIdation products and SOA formation | IASC, IE (ASC) | Combination of Physical and Remote access | Unavailable |
| 26 | C1-WOS-1 | University of Granada (Spain) | Implementation of Combined lidar techniques for the retrieval of Aerosol fluxes in Rural and Urban Sites. (ICARUS) | WOS, PL (OBS) | Combination of Physical and Remote access | Unavailable |
| 27 | C1-SIRTA-1 | University of Nova Gorica (Slovenia) | The Influence of the Mixing State on Aerosol Light Absorption (IMSALA) | SIRTA, FR (OBS) | Combination of Physical and Remote access | Unavailable |
| 28 | C1-FORTH-MSC-1 | National Research Council of Italy – CNR (Italy) | Direct determination of secondary aerosol formation in the Po Valley through mobile reaction chamber technologies | FORTH-MSC, GR (MOB) | Physical access | Unavailable |
| 29 | C1-CESAM-2 | Tampere University (Finland) | Volatile Particles from Sustainable Aviation Fuel (VP-SAF) | CESAM, FR (ASC) | Physical access | Unavailable |
| 30 | C1-WOS-2 | National Institute of Space Research (Brazil) | Structure and dynamics of the planetary boundary layer in urban environment ecosystem. (BOLAUR) | WOS, PL (OBS) | Physical access | Unavailable |
| 31 | C1-CAO/USRL-1 | University of Groningen (the Netherlands) | New Particle Formation in the MEDiterranean region – insights into precursor and cluster composition (NPF- MED) | CAO, CY (OBS), USRL, CY (MOB) | Combination of Physical and Remote access | Unavailable |
| 32 | C1– CMN-PV -3 | University of Bergen (Norway) | Radio Interferometric Characterisation of High Energy Sources from Thunderstorms (RICHEST) | CMN-PV, IT (OBS) | Physical access | Activity Report |
| 33 | C1– CMN-PV -4 | Terra Modus Consultants Limited (United Kingdom) | Medusa Enhanced Volatile Organic Compounds (MEVOC) | CMN-PV, IT (OBS) | Physical access | Unavailable |
| 34 | C1-ATMOS-2 | Bolu Abant İzzet Baysal University – BAİBÜ (Turkey) | Source Apportionment and Health Impact Assessment of Biomass Burning Organic Aerosols in Duzce (Turkey) | ATMOS, GR (OBS), FKL, GR (OBS) | Physical access | Unavailable |
| 35 | C1– CMN-PV -2 | Ecole Polytechnique Federale de Lausanne (Switzerland) | Determination of Aerosol Acidity and Secondary Aerosol Formation in the Po Valley | CMN-PV, IT (OBS) | Physical access | Unavailable |
| 36 | C2-SIRTA1 | Vaisala Oyj | CL61-4UrbanABL: testing the added-value of novel CL61 automatic ceilometer measurements for atmospheric boundary layer profiling in an urban environment. | SIRTA, FR (OBS) | Remote access | Unavailable |
| 37 | C2-CESAR1 | Royal Belgian Institute for Space Aeronomy (BIRA- IASB) | Ruisdael Rotterdam 2022 campaign | CESAR, NL (OBS) | Physical access | Unavailable |
| 38 | C2-PALSOD1 | University of Hertfordshire | Arctic Multi-Phase cLoud Experiment (AMPLE) | FMI PAL-SOD, FI (OBS) | Physical access | Unavailable |
| 39 | C2-SAPHIR1 | Fudan University | Simulating secondary organic aerosol (SOA) formation of aromatics and their products over diurnal cycles | SAPHIR, DE (ASC) | Physical access | Unavailable |
| 40 | C2-ATMOS1 | Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico | Chemical source profiling of exhaust and non-exhaust traffic emission sources in Portugal (CSPENE) | ATMOS, GR (OBS) | Physical access | Activity Report |
| 41 | C2-PALSOD2 | École Polytechnique Fédérale de Lausanne | Vertical aerosol profiles during the Pallas Ice Cloud Experiment 2022 – VAP-PaCE | FMI PAL-SOD, FI (OBS) | Physical access | Unavailable |
| 42 | C2- ISOLAB/CESAR1 | Royal Holloway University of London | BorMIS – Boreal methane isotope studies | ISOLAB-UU @CESAR, NL (CL) | Combination of Physical and Remote access | Unavailable |
| 43 | C2-BCN4 | Finnish Meteorological Institute | Pollen Observations with Lidar – Laser Exploring in Non-invasive Atmospheric Techniques (POLLENAT) | BCN, ES (OBS) | Combination of Physical and Remote access | Unavailable |
| 44 | C2- ACMCC/SIRTA1 | Finnish Meteorological Intitute | Chemical composition of PM1 in Helsinki by RI-Urban (HelRI-Urban) | ACMCC @SIRTA, FR (CL) | Physical access | Unavailable |
