A plausible hydrological scenario for the Bolling-Allerod atmospheric methane increase

R.M. Kalin, J.L. Jirikowic

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3 Citations (Scopus)


The glacial record has shown that atmospheric methane concentrations have fluctuated in the past, particularly during the Bolling-Allerod interstadial. We used an inverse photochemical carbon-cycle model to interpret the magnitude of effect that glacial-interglacial atmospheric methane variations have on the global carbon cycle. The results of this modelling suggest that an observed variation in atmospheric C-14 during this time period may be the result of oxidation of the increased atmospheric methane. We re-examine methane clathrate in palaeosols as a potential source of the methane, and the influence of deglaciation and subsequent heat transport from advecting groundwater in these sediments may be a plausible mechanism by which atmospheric CH4 concentrations abruptly increased during the Bolling-Allerod.
Original languageEnglish
Pages (from-to)111-118
Number of pages8
Issue number1
Publication statusPublished - 1996


  • methane
  • carbon cycle
  • Bolling
  • Allerod
  • atmospheric composition
  • palaeosols
  • groundwater


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