Articles | Volume 17, issue 12
https://doi.org/10.5194/bg-17-3083-2020
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, Martin Jiskra, Jeroen E. Sonke, Sergey V. Loiko, Natalia Kosykh, and Oleg S. Pokrovsky

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Cited articles

Almeida, M. D.: Biogeoquímica de mercúrio na interface solo-atmosfera na Amazônia, PhD thesis, Univsidade Federal Fluminense, Niterói, Brazil, 221 pp., 2005. 
Almeida, M. D., Lacerda, L. D., Bastos, W. R., and Herrmann, J. C.: Mercury loss from soils following conversion from forest to pasture in Rondônia, Western Amazon, Brazil, Environ. Pollut., 137, 179–186, https://doi.org/10.1016/j.envpol.2005.02.026, 2005. 
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Amos, H. M., Jacob, D. J., Kocman, D., Horowitz, H. M., Zhang, Y., Dutkiewicz, S., Horvat, M., Corbitt, E. S., Krabbenhoft, D. P., and Sunderland, E. M.: Global biogeochemical implications of mercury discharges from rivers and sediment burial, Environ. Sci. Technol., 48, 9514–9522, https://doi.org/10.1021/es502134t, 2014. 
Amos, H. M., Sonke, J. E., Obrist, D., Robins, N., Hagan, N., Horowitz, H. M., Mason, R. P., Witt, M., Hedgecock, I. M., Corbitt, E. S., and Sunderland, E. M.: Observational and modeling constraints on global anthropogenic enrichment of mercury, Environ. Sci. Technol., 49, 4036–4047, https://doi.org/10.1021/es5058665, 2015. 
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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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