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Advanced Global Atmospheric Gases Experiment Science Team(AGAGE), Agency for Meteorology, Climatology and Geophysics, Agency on Hydrometeorology under Ministry of Emergency Situations of the Kyrgyz Republic, Atmospheric Chemistry Research Group School of Chemistry University of Bristol, British Antarctic Survey, CNR-Institute of Atmospheric Pollution Research, Commonwealth Scientific and Industrial Research Organisation, Czech Hydrometeorological Institute, Direccion Meteorologica de Chile, Environment and Climate Change Canada, Federal Environment Agency Austria, German Environment Agency, German Meteorological Service, Global Monitoring Laboratory, NOAA, Institute for Nuclear Research and Nuclear Energy, Integrated Carbon Observation System Research Infrastructure, Japan Meteorological Agency, Kenya Meteorological Department, Korea Meteorological Administration, Laboratoire d'Aérologie, Laboratoire de Météorologie Physique, Laboratoire des Sciences du Climat et de l'Environnement, Meteorological Research Institute, National Institute in Space Research, National Institute of Public Health and the Environment, National Institute of Water & Atmospheric Research Ltd., National Physical Laboratory, National Research Council, Institute of Atmospheric Sciences and Climate, National Weather Service, Office National de la Meteorologie, Slovenian Environment Agency, South African Weather Service, State Meteorological Agency of Spain, Swiss Federal Laboratories for Materials Science and Technology, The Hong Kong Polytechnic University, University of Exeter, University of Malta, University of Urbino, Dep. of Pure and Applied Sciences (DISPEA), University of York, Viet Nam Meteorological and Hydrological Administration,

Adelaide Dinoi (ISAC), Adéla Holubová (CHMI), Alcide di Sarra (ENEA), Alessandro Bracci (ISAC), Alex Vermeulen (TNO), Alfred Micallef (UMLT), Andrea Lanza (RSE), Andrew Manning (UEA), Antje Hoheisel (UBAG), Antti Laitinen (FMI), Ari Leskinen (FMI), Arifin, Ikhsan Buyung (BMKG), Arjan Hensen (TNO), Arnoud Frumau (TNO), Arttu Ylisirniö (FMI), Aurélie Colomb (LSCE), Ayoze Álvarez Hernández (AEMET), Bert Scheeren (RUG), Camille Yver-Kwok (LSCE), Carlos Torres (AEMET), Casper Labuschagne (SAWS), Cathrine Lund Myhre (NILU), Cedric Couret (UBAG), Chris Lunder (NILU), Chris Rennick (NPL), Christian Hermans (OPAR), Christian Plass-Dulmer (DWD), Christoph Zellweger (Empa), Claudia Calidonna (ISAC), Colm Sweeney (NOAA), Cornelia Blessing (UBAG), Cosimo Fratticioli (ISAC), Dafina Kikaj (NPL), Dagmar Kubistin (DWD), Damiano Sferlazzo (ENEA), Dan Smale (NIWA), Daniel Gullì (ISAC), Daniela Heltai (RSE), David Murithi Njiru (KMD), David Steger (HFSJG), Dickon Young (UNIVBRIS), Dietmar Weyrauch (DWD), Doug Worthy (ECCC), Dylan Lopez (CEA), E Kozlova (UoE), Edouard Blandin (OPAR), Edward Chung (NPL), Elena Zwerschke (DWD), Elise Guerette (CSIRO), Eliza Harris (HFSJG), Emmal Safi (NPL), Eric Larmanou (SLU), Francesco Apadula (RSE), Francescopiero Calzolari (ISAC), Frank Meinhardt (UBAG), Franz Conen (HFSJG), Freya Squires (BAS), Gabriela Vítková (GCRI), Gabrielle Petron (NOAA), Gaston Torres (DMC), Gheusi Francois (LA), Giorgia De Bendetto (ISAC), Giorgio Tranchida (IASCNR), Giovanni Giacalone (IASCNR), Giovanni Manca (JRC), Giulia Zazzeri (RSE), Grant Forster (UEA), Gulzhan Esenzhanova (Kyrgyzhydromet), Hidekazu Matsueda (MRI), Huilin Chen (RUG), Ignazio Fontana (IASCNR), Irene Lehner (CEC), Iris Buxbaum (UBAA), Ivan Mammarella (INAR), Ivano Ammoscato (ISAC), Janne Levula (INAR), Jean Sciare (LSCE), Jean-Marc Metzger (OPAR), Jean-Marc Pichon (LSCE), Jennifer Müller-Williams (DWD), Jgor Arduini (UNIURB), Joseph Pitt (UNIVBRIS), Juha Hatakka (FMI), Julia Friedli (HFSJG), Julian Grossmann (UBAG), Julie Helle (Andra), Jörg Klausen (MeteoSwiss), Ka Se Lam (PolyU), Kari Lehtinen (FMI), Kateřina Komínková (GCRI), Katie Read (UYRK), Kazuhiro Tsuboi (MRI), Kieran Stanley (UNIVBRIS), Laurent Langrene (Andra), Lino Condori (SMNA), Louis-Jeremy Rigouleau (CEA), Luana Malacaria (ISAC), Luciana Vanni Gatti (INPE), Lucy Carpenter (UYRK), Ludwig Ries (UBAG), Lukas Bäni (HFSJG), Lukas Emmenegger (HFSJG), Léa Gest (OPAR), Mahesh Kumar Sha (OPAR), Marc Delmotte (OPAR), Marcus Schumacher (DWD), Mariantonia Bencardino (IIA), Markus Leuenberger (KUP), Marta Fuente-Lastra (CEA), Martin Saliba (UMLT), Martin Steinbacher (Empa), Martina Schmidt (UBAG), Martine De Mazière (OPAR), Marvic Grima (UMLT), Masao Ishii (MRI), Mateja Gjerek (ARSO), Mathew Mutuku (KMD), Matthias Lindauer (DWD), Maurizio Busetto (ISAC), Meelis Mölder (CEC), Meyerfeld Yves (LA), Michael Elsasser (UBAG), Michal Heliasz (CEC), Michal V. Marek (GCRI), Michel Ramonet (LSCE), Michela Maione (UNIURB), Mikaell Ottosson-Löfvenius (SLU), Mirella Schreiber (UBAG), Morgan Lopez (OPAR), Nahas, Alberth Christian (BMKG), Nguyen Nhat Anh (VNMHA), Nicola Arriga (JRC), Nicolas Kumps (OPAR), Okaem, Tanti Tritama (BMKG), Olivier Laurent (Andra), Ove Hermansen (NILU), Pamela Trisolino (ISAC), Paolo Cristofanelli (ISAC), Pasi Kolari (INAR), Pasi Miettinen (FMI), Paul Fraser (CSIRO), Paul Krummel (CSIRO), Paul Smith (SLU), Pedro Rivas (AEMET), Per Marklund (SLU), Peter Bergamaschi (JRC), Petri Keronen (INAR), Pichon Jean-Marc (LAMP), Pim Van den Bulk (TNO), Primož Dolenc (ARSO), Ray Langenfelds (CSIRO), Ray Wang (EAS), Reza Mahdi (BMKG), Risto Taipale (INAR), Ronald Spoor (RIVM), Sabrina Arnold (DWD), Salvatore Piacentino (ENEA), Salvatore Sinopoli (ISAC), SE-HWAN YANG (KMA), Sidi Baika (ONM), Simon O'Doherty (UNIVBRIS), Simonetta Montaguti (ISAC), Stephen Matthew Platt (NILU), Sylvia Nichol (NIWA), Sébastien Conil (Andra), TAKATSUJI Shinya (JMA), Tanja Koleša (ARSO), Tatiana Di Iorio (ENEA), Thomas Seitz (Empa), Tobias Biermann (CEC), Tobias Kneuer (DWD), Todor Arsov (INRNE), Tuomas Laurila (FMI), Victor Kazan (CEA), Virgile Legendre (CEA), Vlastimil Hanuš (GCRI), Wolfgang Spangl (UBAA), Yves-Alain Roulet (HFSJG), Zineb Mandrick (CEA), Zoë Loh (CSIRO), WDCGG; All CO data contributed to WDCGG by GAW stations and mobiles by 2025-09-17, (Reference date^*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.