Thermokarst Lakes as a Source of Atmospheric CH4 During the Last Deglaciation

  title={Thermokarst Lakes as a Source of Atmospheric CH4 During the Last Deglaciation},
  author={Katey Walter and Mary E. Edwards and Guido Grosse and Sergey Zimov and F. Stuart Chapin},
  pages={633 - 636}
Polar ice-core records suggest that an arctic or boreal source was responsible for more than 30% of the large increase in global atmospheric methane (CH4) concentration during deglacial climate warming; however, specific sources of that CH4 are still debated. Here we present an estimate of past CH4 flux during deglaciation from bubbling from thermokarst (thaw) lakes. Based on high rates of CH4 bubbling from contemporary arctic thermokarst lakes, high CH4 production potentials of organic matter… Expand

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