Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Volume 12, issue 11
Biogeosciences, 12, 3197–3223, 2015
https://doi.org/10.5194/bg-12-3197-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Freshwater ecosystems in changing permafrost landscapes

Biogeosciences, 12, 3197–3223, 2015
https://doi.org/10.5194/bg-12-3197-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 02 Jun 2015

Research article | 02 Jun 2015

Methane and carbon dioxide emissions from 40 lakes along a north–south latitudinal transect in Alaska

A. Sepulveda-Jauregui et al.
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This study of methane (CH4) and carbon dioxide (CO2) emission modes from 40 lakes along a latitudinal transect in Alaska revealed that thermokarst lakes formed in Pleistocene-aged icy, organic-rich yedoma-type permafrost had the highest emissions. Ebullition and diffusion were the dominant modes of CH4 and CO2 emissions, respectively. Accounting for the global warming potentials of the gases, the climate warming impact of lake CH4 emissions was 2 times higher than that of CO2.
This study of methane (CH4) and carbon dioxide (CO2) emission modes from 40 lakes along a...
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