Articles | Volume 15, issue 3
The Cryosphere, 15, 1607–1625, 2021
https://doi.org/10.5194/tc-15-1607-2021
The Cryosphere, 15, 1607–1625, 2021
https://doi.org/10.5194/tc-15-1607-2021

Research article 31 Mar 2021

Research article | 31 Mar 2021

Methane pathways in winter ice of a thermokarst lake–lagoon–coastal water transect in north Siberia

Ines Spangenberg et al.

Data sets

Dissolved methane and hydrochemical parameters in ice cores from April 2017 of a bay, thermokarst lagoon, and thermokarst lake, Bykovsky Peninsula, Lena Delta area. Ines Spangenberg, Pier Paul Overduin, Ellen Damm, Ingeborg Bussmann, Hanno Meyer, Susanne Liebner, Michael Angelopoulos, Boris K. Biskaborn, Mikhail N. Grigoriev, and Guido Grosse https://doi.org/10.1594/PANGAEA.913642

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Short summary
Thermokarst lakes are common on ice-rich permafrost. Many studies have shown that they are sources of methane to the atmosphere. Although they are usually covered by ice, little is known about what happens to methane in winter. We studied how much methane is contained in the ice of a thermokarst lake, a thermokarst lagoon and offshore. Methane concentrations differed strongly, depending on water body type. Microbes can also oxidize methane in ice and lower the concentrations during winter.