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Abstract: Observation and Multi-Model Intercomparison of δ<sup>13</sup>C-CH<sub>4</sub> from an Arctic Permafrost Thaw Lake (AGU25)

Observation and Multi-Model Intercomparison of δ13C-CH4 from an Arctic Permafrost Thaw Lake

Kevin Rozmiarak1, Xiangyu Liu2, Youmi Oh3, Irina Overeem4, Elijah Miller5, Valerie A Morris6, Bruce H Vaughn6, Nicholas Hasson7, Brooke Chase8, Katey M Walter Anthony7, Qianlai Zhuang2, Chuck Smallwood9, Gregory B Rieker10 and Tyler R Jones11, (1)University of Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States, (2)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, United States, (3)NOAA Global Monitoring Laboratory / Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, United States, (4)University of Colorado, Department of Geological Sciences and Institute of Arctic and Alpine Research, Boulder, United States, (5)University of Colorado at Boulder, Boulder, United States, (6)University of Colorado, Institute of Arctic and Alpine Research, Boulder, United States, (7)University of Alaska Fairbanks, Water and Environmental Research Center, Fairbanks, AK, United States, (8)University of Colorado at Boulder, Environmental Studies, Boulder, United States, (9)Sandia National Laboratories, Albuquerque, NM, United States, (10)University of Colorado at Boulder, Mechanical Engineering, Boulder, United States, (11)Institute of Arctic and Alpine Research, Boulder, United States