"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

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, AGH University of Krakow, Atmospheric Chemistry Research Group School of Chemistry University of Bristol, China Meteorological Administration, CNR-Institute of Atmospheric Pollution Research, Commonwealth Scientific and Industrial Research Organisation, Czech Hydrometeorological Institute, Direccion Meteorologica de Chile, Earth Sciences New Zealand, Environment and Climate Change Canada, Federal Environment Agency Austria, Finnish Meteorological Institute, German Environment Agency, Global Monitoring Laboratory, NOAA, Institute for Nuclear Research, Institute of Arctic and Alpine Research, University of Colorado, Integrated Carbon Observation System Research Infrastructure, Italian Air Force Mountain Centre, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Japan Meteorological Agency, Kenya Meteorological Department, Korea Meteorological Administration, Kyrgyz National University, Laboratoire des Sciences du Climat et de l'Environnement, Meteorological Research Institute, National Institute for Environmental Studies, National Institute in Space Research, National Institute of Environmental Research, National Institute of Meteorological Research, KMA, National Institute of Public Health and the Environment, National Physical Laboratory, National Research Council, Institute of Atmospheric Sciences and Climate, National Weather Service, NCAS, University of York, Norwegian Institute for Air Research, Ricerca sul Sistema Energetico - RSE S.p.A., 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 Urbino, Dep. of Pure and Applied Sciences (DISPEA), Viet Nam Meteorological and Hydrological Administration, Voeikov Main Geophysical Observatory,

Adelaide Dinoi (ISAC), Adéla Holubová (CHMI), Aigerim Zhusupova (Kyrgyzhydromet), 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 Caldow (CSIRO), Chris Lunder (NILU), Chris Rennick (NPL), Christian Hermans (OPAR), Christian Plass-Dulmer (DWD), Christina Harth (SIO), 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), Dan Smale (ESNZ), Daniel Gullì (ISAC), Daniela Heltai (RSE), David Murithi Njiru (KMD), David Steger (HFSJG), Detlev Helmig (INSTAAR), Dickon Young (UNIVBRIS), Dietmar Weyrauch (DWD), Dylan Lopez (CEA), E Kozlova (UoE), Ed Dlugokencky (NOAA), Edouard Blandin (OPAR), Edward Chung (NPL), Elena Zwerschke (DWD), Eliza Harris (HFSJG), Emmal Safi (NPL), ENYO Kazutaka (JMA), Eric Larmanou (SLU), Eunjung Kim (GERC), Fabrizio Anello (ENEA), Felice Dipace (IAFMS), 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), Gordon Brailsford (ESNZ), Grant Forster (UEA), Hidekazu Matsueda (MRI), Huilin Chen (RUG), Ignazio Fontana (IASCNR), Irene Lehner (CEC), Iris Buxbaum (UBAA), Ivan Mammarella (INAR), Ivano Ammoscato (ISAC), Jacques Hueber (INSTAAR), Janne Levula (INAR), Jaroslaw Necki (AGH), Jean-Marc Metzger (OPAR), Jean-Marc Pichon (LSCE), Jennifer Müller-Williams (DWD), Jens Mühle (SIO), Jgor Arduini (UNIURB), Jiyoung Kim (GERC), Jooil Kim (SIO), 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), 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), 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), Misa Ishizawa (ECCC), Morgan Lopez (OPAR), Motoki Sasakawa (NIES), 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 Fraser (CSIRO), Paul Krummel (CSIRO), Paul Smith (SLU), Pedro Rivas (AEMET), Per Marklund (SLU), Peter Bergamaschi (JRC), Petri Keronen (INAR), Pim Van den Bulk (TNO), Ray F. Weiss (SIO), Ray Langenfelds (CSIRO), Ray Wang (EAS), Reza Mahdi (BMKG), Risto Taipale (INAR), Ronald Spoor (RIVM), Ryo Fujita (MRI), Sabrina Arnold (DWD), Salvatore Piacentino (ENEA), Salvatore Sinopoli (ISAC), SE-HWAN YANG (KMA), Shinji Morimoto (TU), Simon O'Doherty (UNIVBRIS), Simonetta Montaguti (ISAC), Stephen Matthew Platt (NILU), Sylvia Nichol (ESNZ), Sándor Bán (ATOMKI), Sébastien Conil (Andra), TAKATSUJI Shinya (JMA), Taku Umezawa (NIES), Tatiana Di Iorio (ENEA), Tobias Biermann (CEC), Tobias Kneuer (DWD), Toshinobu Machida (NIES), Tuomas Laurila (FMI), V. Sinyakov (KSNU), Victor Kazan (CEA), Viktor Ivakhov (MGO), Virgile Legendre (CEA), Vlastimil Hanuš (GCRI), Wolfgang Spangl (UBAA), Xin Lan (NOAA), Yasunori TOHJIMA (NIES), Yosuke Niwa (NIES), Yousuke Sawa (MRI), Yves-Alain Roulet (HFSJG), Zineb Mandrick (CEA), Zoë Loh (CSIRO), WDCGG; All CH₄ data contributed to WDCGG by GAW stations and mobiles by 2026-07-30, (Reference date^*: YYYY/MM/DD)

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