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Abstract: First Annual (2024-2025) Global Measurements of <sup>14</sup>CO from the FETCH<sub>4</sub> Network to Better Constrain OH, the Main Sink for Atmospheric CH<sub>4</sub> (AGU25)

First Annual (2024-2025) Global Measurements of 14CO from the FETCH4 Network to Better Constrain OH, the Main Sink for Atmospheric CH4

Aparajeo Chattopadhyay1, Sebastian Miller1, Elizabeth Thomson1, Lee T Murray2, Andrew Milford Smith3, Bin Yang3, Archana Amatya Joshi3, Bryan Thomas4, Ross Burgener5, Aidan Colton4, Michael Doneghey6, Rebecca Malinda Chewitt-Lucas7, Edmund Blades8, Alejandro Borges9, Nayra Chinea Machín9, Pedro Soriano10, Molly Leitch11, Hinrich Schaefer12, Gordon W Brailsford13, Olivier Magand14, David Combemale14, Patrick Hernandez15, Eric Golubic14, Kathleen R Hall2, Spencer Ahn1, Margaret Scholer16, Alexander C. Ihle1, Alexander J Turner17 and Vasilii V Petrenko2, (1)University of Rochester, Department of Earth and Environmental Sciences, Rochester, United States, (2)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, (3)Centre for Accelerator Science, Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia, (4)NOAA Global Monitoring Laboratory, Boulder, United States, (5)NOAA Observatory Operations, Global Monitoring Laboratory, Utqiaġvik, United States, (6)NOAA Global Monitoring Laboratory, Pago Pago, American Samoa, (7)Carribean Institute of Meteorology and Hydrology, Bridgetown, Barbados, (8)Barbados Atmospheric Chemistry Observatory, Ragged Point, Barbados, (9)Izaña Atmospheric Research Center, Tenerife ES, Tenerife, Spain, (10)Izaña Atmospheric Research Center, Tenerife, Spain, (11)National Institute of Water and Atmospheric Research, Wellington, Australia, (12)NIWA, Wellington, New Zealand, (13)National Institute of Water and Atmospheric Research, Wellington, New Zealand, (14)Observatoire des Sciences de l’Univers à La Réunion, La Réunion, France, (15)Université de La Réunion, Observatoire des Sciences de l'Univers, Saint Denis, France, (16)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, United States, (17)University of Washington, Department of Atmospheric and Climate Science, Seattle, United States