Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave
Anthropogenic global warming may be accelerated by a positive feedback from the mobilization of methane from thawing Arctic permafrost. There are large uncertainties about the size of carbon stocks and the magnitude of possible methane emissions. Methane cannot only be produced from the microbial de...
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Uppsala universitet, Mineralogi, petrologi och tektonik
2021
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ftuppsalauniv:oai:DiVA.org:uu-452131 2024-02-11T10:01:29+01:00 Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave Froitzheim, Nikolaus Majka, Jaroslaw Zastrozhnov, Dmitry 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-452131 https://doi.org/10.1073/pnas.2107632118 eng eng Uppsala universitet, Mineralogi, petrologi och tektonik Univ Bonn, Inst Geosci, D-53115 Bonn, Germany. AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, PL-30059 Krakow, Poland. AP Karpinsky Russian Geol Res Inst, St Petersburg 199106, Russia.;Volcan Basin Petr Res, N-0361 Oslo, Norway. Proceedings of the National Academy of Sciences Proceedings of the National Academy of Sciences of the United States of America, 0027-8424, 2021, 118:32, orcid:0000-0002-6792-6866 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-452131 doi:10.1073/pnas.2107632118 PMID 34341110 ISI:000685043800023 info:eu-repo/semantics/openAccess permafrost thermogenic methane gas hydrate global warming Siberia Geology Geologi Article in journal info:eu-repo/semantics/article text 2021 ftuppsalauniv https://doi.org/10.1073/pnas.2107632118 2024-01-17T23:32:02Z Anthropogenic global warming may be accelerated by a positive feedback from the mobilization of methane from thawing Arctic permafrost. There are large uncertainties about the size of carbon stocks and the magnitude of possible methane emissions. Methane cannot only be produced from the microbial decay of organic matter within the thawing permafrost soils (microbial methane) but can also come from natural gas (thermogenic methane) trapped under or within the permafrost layer and released when it thaws. In the Taymyr Peninsula and surroundings in North Siberia, the area of the worldwide largest positive surface temperature anomaly for 2020, atmospheric methane concentrations have increased considerably during and after the 2020 heat wave. Two elongated areas of increased atmospheric methane concentration that appeared during summer coincide with two stripes of Paleozoic carbonates exposed at the southern and northern borders of the Yenisey-Khatanga Basin, a hydrocarbon-bearing sedimentary basin between the Siberian Craton to the south and the Taymyr Fold Belt to the north. Over the carbonates, soils are thin to nonexistent and wetlands are scarce. The maxima are thus unlikely to be caused by microbial methane from soils or wetlands. We suggest that gas hydrates in fractures and pockets of the carbonate rocks in the permafrost zone became unstable due to warming from the surface. This process may add unknown quantities of methane to the atmosphere in the near future. Article in Journal/Newspaper Arctic Global warming khatanga permafrost Taymyr Taymyr Peninsula Siberia Uppsala University: Publications (DiVA) Arctic Taymyr ENVELOPE(89.987,89.987,68.219,68.219) Yenisey ENVELOPE(82.680,82.680,71.828,71.828) Proceedings of the National Academy of Sciences 118 32 e2107632118 |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
permafrost thermogenic methane gas hydrate global warming Siberia Geology Geologi |
spellingShingle |
permafrost thermogenic methane gas hydrate global warming Siberia Geology Geologi Froitzheim, Nikolaus Majka, Jaroslaw Zastrozhnov, Dmitry Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave |
topic_facet |
permafrost thermogenic methane gas hydrate global warming Siberia Geology Geologi |
description |
Anthropogenic global warming may be accelerated by a positive feedback from the mobilization of methane from thawing Arctic permafrost. There are large uncertainties about the size of carbon stocks and the magnitude of possible methane emissions. Methane cannot only be produced from the microbial decay of organic matter within the thawing permafrost soils (microbial methane) but can also come from natural gas (thermogenic methane) trapped under or within the permafrost layer and released when it thaws. In the Taymyr Peninsula and surroundings in North Siberia, the area of the worldwide largest positive surface temperature anomaly for 2020, atmospheric methane concentrations have increased considerably during and after the 2020 heat wave. Two elongated areas of increased atmospheric methane concentration that appeared during summer coincide with two stripes of Paleozoic carbonates exposed at the southern and northern borders of the Yenisey-Khatanga Basin, a hydrocarbon-bearing sedimentary basin between the Siberian Craton to the south and the Taymyr Fold Belt to the north. Over the carbonates, soils are thin to nonexistent and wetlands are scarce. The maxima are thus unlikely to be caused by microbial methane from soils or wetlands. We suggest that gas hydrates in fractures and pockets of the carbonate rocks in the permafrost zone became unstable due to warming from the surface. This process may add unknown quantities of methane to the atmosphere in the near future. |
format |
Article in Journal/Newspaper |
author |
Froitzheim, Nikolaus Majka, Jaroslaw Zastrozhnov, Dmitry |
author_facet |
Froitzheim, Nikolaus Majka, Jaroslaw Zastrozhnov, Dmitry |
author_sort |
Froitzheim, Nikolaus |
title |
Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave |
title_short |
Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave |
title_full |
Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave |
title_fullStr |
Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave |
title_full_unstemmed |
Methane release from carbonate rock formations in the Siberian permafrost area during and after the 2020 heat wave |
title_sort |
methane release from carbonate rock formations in the siberian permafrost area during and after the 2020 heat wave |
publisher |
Uppsala universitet, Mineralogi, petrologi och tektonik |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-452131 https://doi.org/10.1073/pnas.2107632118 |
long_lat |
ENVELOPE(89.987,89.987,68.219,68.219) ENVELOPE(82.680,82.680,71.828,71.828) |
geographic |
Arctic Taymyr Yenisey |
geographic_facet |
Arctic Taymyr Yenisey |
genre |
Arctic Global warming khatanga permafrost Taymyr Taymyr Peninsula Siberia |
genre_facet |
Arctic Global warming khatanga permafrost Taymyr Taymyr Peninsula Siberia |
op_relation |
Proceedings of the National Academy of Sciences of the United States of America, 0027-8424, 2021, 118:32, orcid:0000-0002-6792-6866 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-452131 doi:10.1073/pnas.2107632118 PMID 34341110 ISI:000685043800023 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1073/pnas.2107632118 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
118 |
container_issue |
32 |
container_start_page |
e2107632118 |
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1790597291690688512 |