Articles | Volume 12, issue 20
Biogeosciences, 12, 5941–5965, 2015
https://doi.org/10.5194/bg-12-5941-2015

Special issue: Freshwater ecosystems in changing permafrost landscapes

Biogeosciences, 12, 5941–5965, 2015
https://doi.org/10.5194/bg-12-5941-2015
Research article
19 Oct 2015
Research article | 19 Oct 2015

Thermal processes of thermokarst lakes in the continuous permafrost zone of northern Siberia – observations and modeling (Lena River Delta, Siberia)

J. Boike et al.

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Short summary
We show that lakes in northern Siberia are very efficient with respect to energy absorption and mixing using measurements as well as numerical modeling. We show that (i) the lakes receive substantial energy for warming from net short-wave radiation; (ii) convective mixing occurs beneath the ice cover, follow beneath the ice cover, following ice break-up, summer, and fall (iii) modeling suggests that the annual mean net heat flux across the bottom sediment boundary is approximately zero.
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