Arctic soil methane sink increases with drier conditions and higher ecosystem respiration.

Arctic wetlands are known methane (CH) emitters but recent studies suggest that the Arctic CH sink strength may be underestimated. Here we explore the capacity of well-drained Arctic soils to consume atmospheric CH using >40,000 hourly flux observations and spatially distributed flux measurements from 4 sites and 14 surface types. While consumption of atmospheric CH occurred at all sites at rates of 0.