Articles | Volume 17, issue 12
Biogeosciences, 17, 3083–3097, 2020
https://doi.org/10.5194/bg-17-3083-2020
Biogeosciences, 17, 3083–3097, 2020
https://doi.org/10.5194/bg-17-3083-2020

Research article 18 Jun 2020

Research article | 18 Jun 2020

A revised pan-Arctic permafrost soil Hg pool based on Western Siberian peat Hg and carbon observations

Artem G. Lim et al.

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Short summary
To better understand the mercury (Hg) content in northern soils, we measured Hg concentration in peat cores across a 1700 km permafrost gradient in Siberia. We demonstrated a northward increase in Hg concentration in peat and Hg pools in frozen peatlands. We revised the 0–30 cm northern soil Hg pool to be 72 Gg, which is 7 % of the global soil Hg pool of 1086 Gg. The results are important for understanding Hg exchange between soil, water, and the atmosphere under climate change in the Arctic.
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