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Agency for Meteorology, Climatology and Geophysics, Agency on Hydrometeorology under Ministry of Emergency Situations of the Kyrgyz Republic, AGH University of Krakow, Aichi Air Environment Division, Atmospheric Chemistry Research Group School of Chemistry University of Bristol, Center for Environmental Science in Saitama, China Meteorological Administration, CNR-Institute of Atmospheric Pollution Research, Commonwealth Scientific and Industrial Research Organisation, Department of Applied Environmental Science, Stockholm University, Direccion Meteorologica de Chile, Direcion Nacional del Antartico- Istituto Antartico Argentino, Buenos Aires, Argentina, Egyptian Meteorological Authority, Environment and Climate Change Canada, Federal Environment Agency Austria, Finnish Meteorological Institute, Fisheries Research Agency, Fraunhofer-Institute for Atmospheric Environmental Research, German Environment Agency, German Meteorological Service, Global Monitoring Laboratory, NOAA, Hong Kong Observatory, Hungarian Meteorological Service, Institute for Nuclear Research, Institute for Nuclear Research and Nuclear Energy, Institute of Environmental Protection - NRI, Instituto Geofisico del Peru, Integrated Carbon Observation System Research Infrastructure, Italian Air Force Mountain Centre, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Japan Agency for Marine-Earth Science and Technology, Japan Meteorological Agency, Kenya Meteorological Department, Korea Meteorological Administration, Kyrgyz National University, Laboratoire des Sciences du Climat et de l'Environnement, Malaysian Meteorological Department, Meteorological Research Institute, National Institute for Environmental Studies, National Institute in Space Research, National Institute of Advanced Industrial Science and Technology, National Institute of Environmental Research, National Institute of Meteorological Research, KMA, National Institute of Public Health and the Environment, National Institute of Water & Atmospheric Research Ltd., National Meteorological Administration, National Physical Laboratory, National Research Council, Institute of Atmospheric Sciences and Climate, National Weather Service, Norwegian Institute for Air Research, Osaka University, Physics Institute, Climate and Environmental Physics, University of Bern, Ricerca sul Sistema Energetico - RSE S.p.A., Shizuoka University, South African Weather Service, State Meteorological Agency of Spain, Swiss Federal Laboratories for Materials Science and Technology, Tohoku University, University of Exeter, University of Malta, University of York, Viet Nam Meteorological and Hydrological Administration, Voeikov Main Geophysical Observatory,

AbdElhamid Gouda Elawadi (EMA), Adelaide Dinoi (ISAC), Ahmad Fairudz Jamaluddin (MMD), Aigerim Zhusupova (Kyrgyzhydromet), Akihiko Murata (JAMSTEC), Alcide di Sarra (ENEA), Alessandro Bracci (ISAC), Alex Vermeulen (TNO), Alfred Micallef (UMLT), Andrea Lanza (RSE), Andreas Wolf (UBAA), Andrew Manning (UEA), Angelo Viola (ISAC), Ann Stavert (CSIRO), Anna Degorska (IOEP), 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), Birgitta Noone (ITM), 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), Daisuke Goto (NIPR), Damiano Sferlazzo (ENEA), Daniel Gullì (ISAC), Daniela Heltai (RSE), David Murithi Njiru (KMD), David Steger (HFSJG), 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), ENYO Kazutaka (JMA), Eric Larmanou (SLU), Eunjung Kim (GERC), Fabrizio Anello (ENEA), Felice Dipace (IAFMS), Florin Nicodim (INMH), Francesco Apadula (RSE), Francesco Monteleone (ENEA), Francescopiero Calzolari (ISAC), Frank Meinhardt (UBAG), Franz Conen (HFSJG), Gabriela Vítková (GCRI), Gaston Torres (DMC), Giorgia De Bendetto (ISAC), Giorgio Tranchida (IASCNR), Giovanni Giacalone (IASCNR), Giovanni Manca (JRC), Giulia Zazzeri (RSE), Grant Forster (UEA), Hans-Christen (ITM), Hidekazu Matsueda (MRI), Hitoshi MUKAI (NIES), Horacio Rodriguez (IAA), Huilin Chen (RUG), Ignazio Fontana (IASCNR), Irene Lehner (CEC), Iris Buxbaum (UBAA), Ivan Mammarella (INAR), Ivano Ammoscato (ISAC), Janne Levula (INAR), Jaroslaw Necki (AGH), Jean-Marc Metzger (OPAR), Jean-Marc Pichon (LSCE), Jennifer Müller-Williams (DWD), Jiyoung Kim (GERC), Joseph Pitt (UNIVBRIS), Juha Hatakka (FMI), Julia Friedli (HFSJG), Julian Grossmann (UBAG), Julie Helle (Andra), Jörg Klausen (MeteoSwiss), Kari Lehtinen (FMI), Kateřina Komínková (GCRI), Katie Read (UYRK), Kazuhiro Tsuboi (MRI), Kentaro ISHIJIMA (MRI), Kieran Stanley (UNIVBRIS), Koji Ohno (AICH), Krzysztof Skotak (IOEP), Laszlo Haszpra (ATOMKI), Laurent Langrene (Andra), LIANG Miao (CMA), Lino Condori (SMNA), Lise Lotte Sørensen (AU), Louis-Jeremy Rigouleau (CEA), Luana Malacaria (ISAC), Luciana Vanni Gatti (INPE), Lucy Carpenter (UYRK), Ludwig Ries (UBAG), Luigi Lauria (IAFMS), Lukas Bäni (HFSJG), Lukas Emmenegger (HFSJG), Lukasz Chmura (AGH), Léa Gest (OPAR), M.C.Lam (HKO), Mahesh Kumar Sha (OPAR), Marc Delmotte (OPAR), Marcus Schumacher (DWD), Maria Emilia Ruiz (SMNA), 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), Mathew Mutuku (KMD), Matthias Lindauer (DWD), Maurizio Busetto (ISAC), Meelis Mölder (CEC), Michael Elsasser (UBAG), Michal Heliasz (CEC), Michal V. Marek (GCRI), Michel Ramonet (LSCE), Mihály Molnár (ATOMKI), Mikaell Ottosson-Löfvenius (SLU), Mirella Schreiber (UBAG), Mitsuo Toda (SHIZU), Mohan Kumar Sammathuria (MMD), Morgan Lopez (OPAR), Mutsumi Ishitsuka (IGP), Nahas, Alberth Christian (BMKG), Nguyen Nhat Anh (VNMHA), Nicola Arriga (JRC), Nicolas Kumps (OPAR), Nina Paramonova (MGO), Okaem, Tanti Tritama (BMKG), Olivier Laurent (Andra), ONO Etsuro (JMA), Ove Hermansen (NILU), Pamela Trisolino (ISAC), Paolo Cristofanelli (ISAC), Pasi Kolari (INAR), Pasi Miettinen (FMI), Paul Krummel (CSIRO), Paul Smith (SLU), Pedro Rivas (AEMET), Per Marklund (SLU), Peter Bergamaschi (JRC), Petri Keronen (INAR), Pim Van den Bulk (TNO), Ray Langenfelds (CSIRO), Reza Mahdi (BMKG), Risto Taipale (INAR), Ronald Spoor (RIVM), Sabrina Arnold (DWD), Salvatore Piacentino (ENEA), Salvatore Sinopoli (ISAC), SE-HWAN YANG (KMA), Shigeyuki Ishidoya (AIST), Shinji Morimoto (TU), Shohei Murayama (AIST), Simon O'Doherty (UNIVBRIS), Simonetta Montaguti (ISAC), Stefano Amendola (IAFMS), Stephen Matthew Platt (NILU), Sylvia Nichol (NIWA), Sándor Bán (ATOMKI), Sébastien Conil (Andra), Takashi Machimura (OSAKAU), TAKATSUJI Shinya (JMA), Tatiana Di Iorio (ENEA), Thomas Trickl (IMKIFU), Tobias Biermann (CEC), Tobias Kneuer (DWD), Todor Arsov (INRNE), Tomohiro Oda (USRA), Toshinobu Machida (NIES), Tove Svendby (NILU), Tsuneo Ono (FRA), Tuomas Laurila (FMI), V. Sinyakov (KSNU), Victor Kazan (CEA), Viktor Ivakhov (MGO), Virgile Legendre (CEA), Vlastimil Hanuš (GCRI), W.H. Leung (HKO), Wael Khaled (EMA), Wolfgang Spangl (UBAA), Xin Lan (NOAA), Yosuke MUTO (SAIPF), Yosuke Niwa (NIES), Yousuke Sawa (MRI), Yukio TERAO (NIES), Yves-Alain Roulet (HFSJG), Zdzislaw Przadka (IOEP), Zeinab Salah (EMA), Zineb Mandrick (CEA), Zoë Loh (CSIRO), WDCGG; All CO₂ data contributed to WDCGG by GAW stations and mobiles by 2026-04-03, (Reference date^*: YYYY/MM/DD)

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