Journal article

Observation-based modelling of permafrost carbon fluxes with accounting for deep carbon deposits and thermokarst activity

T Schneider von Deimling, G Grosse, J Strauss, L Schirrmeister, A Morgenstern, S Schaphoff, M Meinshausen, J Boike

Biogeosciences Discussions | Copernicus GmbH

Abstract

Abstract. High-latitude soils store vast amounts of perennially frozen and therefore inert organic matter. With rising global temperatures and consequent permafrost degradation, a part of this carbon store will become available for microbial decay and eventual release to the atmosphere. We have developed a simplified, two-dimensional multi-pool model to estimate the strength and timing of future carbon dioxide (CO2) and methane (CH4) fluxes from newly thawed permafrost carbon (i.e. carbon thawed when temperatures rise above pre-industrial levels). We have especially simulated carbon release from deep deposits in Yedoma regions by describing abrupt thaw under thermokarst lakes. The computatio..

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University of Melbourne Researchers