David Olefeldt

TL;DR: In this paper, the authors find that current evidence suggests a gradual and prolonged release of greenhouse gas emissions in a warming climate and present a research strategy with which to target poorly understood aspects of permafrost carbon dynamics.

TL;DR: It is suggested that water table and temperature are dominant controls on methane flux in pristine bogs and swamps, while other processes, such as vascular transport in pristine fens, have the potential to partially override the effect of these controls in other wetland types.

TL;DR: In this article, the authors synthesize the best available information and develop inventory models to simulate abrupt thaw impacts on permafrost carbon balance, and they conclude that models considering only gradual thaw are substantially underestimating carbon emissions.

TL;DR: It is estimated that approximately half of the below-ground organic carbon within the study region is stored in thermokarst landscapes, highlighting the importance of explicitly considering thermokARst when assessing impacts of climate change, including future landscape greenhouse gas emissions, and providing a means for assessing such impacts at the circumpolar scale.

TL;DR: Future changes to terrestrial high-latitude CH4 emissions will be more proximately related to changes in moisture, soil temperature, and vegetation composition than to increased availability of organic matter following permafrost thaw.