Multidecadal preindustrial methane variability can be explained by noise in the source–sink imbalance (opens in new tab)

Proceedings of the National Academy of Sciences, Volume 123, Issue 25, June 2026. SignificancePrior to the Industrial Revolution, ice core methane records show multidecadal-to-centennial variability usually attributed to slow climate changes or human activity. We show that this variability can instead arise from fast, random ...