Articles | Volume 15, issue 3
https://doi.org/10.5194/tc-15-1607-2021
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, Pier Paul Overduin, Ellen Damm, Ingeborg Bussmann, Hanno Meyer, Susanne Liebner, Michael Angelopoulos, Boris K. Biskaborn, Mikhail N. Grigoriev, and Guido Grosse

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Cited articles

Adams, W. and Lasenby, D.: The roles of snow, lake ice and lake water in the distribution of major ions in the ice cover of a lake, Ann. Glaciol., 7, 202–207, https://doi.org/10.3189/S0260305500006170, 1985. a, b
Anderson, D. L.: Growth rate of sea ice, J. Glaciol., 3, 1170–1172, https://doi.org/10.3189/S0022143000017676, 1961. a
Angelopoulos, M., Westermann, S., Overduin, P., Faguet, A., Olenchenko, V., Grosse, G., and Grigoriev, M. N.: Heat and salt flow in subsea permafrost modeled with CryoGRID2, J. Geophys. Res.-Earth, 124, 920–937, https://doi.org/10.1029/2018JF004823, 2019. a
Angelopoulos, M., Overduin, P. P., Westermann, S., Tronicke, J., Strauss, J., Schirrmeister, L., Biskaborn, B. K., Liebner, S., Maksimov, G., Grigoriev, M. N., and Grosse, G: Thermokarst lake to lagoon transitions in eastern Siberia: Do submerged taliks refreeze?, J. Geophys. Res.-Earth, 125, e2019JF005424, https://doi.org/10.1029/2019JF005424, 2020. a, b, c
Arp, C. D., Jones, B. M., Grosse, G., Bondurant, A. C., Romanovsky, V. E., Hinkel, K. M., and Parsekian, A. D.: Threshold sensitivity of shallow Arctic lakes and sublake permafrost to changing winter climate, Geophys. Res. Lett., 43, 6358–6365, https://doi.org/10.1002/2016GL068506, 2016. a
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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.