Atmospheric methane levels increased over geological formations in Northern Siberia following a heat wave in 2020, suggesting that permafrost thaw releases methane from reservoirs.
Image credit: Wikimedia Commons.
Edited by George R. Milner, Pennsylvania State University, University Park, Pennsylvania, and accepted by Editorial Board Member Elsa M. Redmond April 12, 2018 (received for review December 13, 2017)
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- Published in issue June 5, 2018.
- Published first May 21, 2018.
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- Previous version (May 21, 2018 - 11:46).
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Copyright © 2018 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).
Author Information
- Mads Kähler Holsta,b,
- Jan Heinemeierc,
- Ejvind Hertzd,
- Peter Jensenb,e,
- Mette Løvschalb,1,
- Lene Mollerupd,
- Bent Vad Odgaardf,
- Jesper Olsenc,
- Niels Emil Søef, and
- Søren Munch Kristiansenf
- aMoesgaard Museum, 8270 Højbjerg, Denmark;
- bDepartment of Archaeology and Heritage Studies, Aarhus University, 8270 Højbjerg, Denmark;
- cAarhus AMS Centre, Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark;
- dMuseum Skanderborg, 8660 Skanderborg, Denmark;
- eArchaeological IT, Aarhus University and Moesgaard Museum, 8270 Højbjerg, Denmark;
- fDepartment of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
Edited by George R. Milner, Pennsylvania State University, University Park, Pennsylvania, and accepted by Editorial Board Member Elsa M. Redmond April 12, 2018 (received for review December 13, 2017)
Footnotes
- ↵1To whom correspondence should be addressed. Email: lovschal{at}cas.au.dk.
Author contributions: M.K.H., L.M., and J.O. designed research; M.K.H., J.H., E.H., M.L., L.M., B.V.O., J.O., N.E.S., and S.M.K. performed research; J.H. and P.J. contributed new reagents/analytic tools; M.K.H., J.H., M.L., L.M., B.V.O., J.O., and S.M.K. analyzed data; and M.K.H., M.L., and L.M. wrote the paper.
The authors declare no conflict of interest.
This article is a PNAS Direct Submission. G.R.M. is a guest editor invited by the Editorial Board.
Data deposition: The Alken Enge Database is available at www.alkenenge.dk/ under the Open Database License (https://opendatacommons.org/licenses/odbl/1.0/). Any rights in individual contents of the database are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 (https://creativecommons.org/licenses/by-nc-sa/4.0/).
This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1721372115/-/DCSupplemental.
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- Anthropology
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