Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue
Estimates of the permafrost-climate feedback vary in magnitude and sign, partly because permafrost carbon stability in warmer-than-present conditions is not well constrained. Here we use a Plio-Pleistocene lacustrine reconstruction of mean annual air temperature (MAAT) from the Tibetan Plateau, the...
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Online Access: | http://www.osti.gov/servlets/purl/1904228 https://www.osti.gov/biblio/1904228 https://doi.org/10.1038/s41467-022-29011-2 |
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ftosti:oai:osti.gov:1904228 2023-07-30T04:06:12+02:00 Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue Cheng, Feng Garzione, Carmala Li, Xiangzhong Salzmann, Ulrich Schwarz, Florian Haywood, Alan M. Tindall, Julia Nie, Junsheng Li, Lin Wang, Lin Abbott, Benjamin W. Elliott, Ben Liu, Weiguo Upadhyay, Deepshikha Arnold, Alexandrea Tripati, Aradhna 2023-05-08 application/pdf http://www.osti.gov/servlets/purl/1904228 https://www.osti.gov/biblio/1904228 https://doi.org/10.1038/s41467-022-29011-2 unknown http://www.osti.gov/servlets/purl/1904228 https://www.osti.gov/biblio/1904228 https://doi.org/10.1038/s41467-022-29011-2 doi:10.1038/s41467-022-29011-2 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.1038/s41467-022-29011-2 2023-07-11T10:16:52Z Estimates of the permafrost-climate feedback vary in magnitude and sign, partly because permafrost carbon stability in warmer-than-present conditions is not well constrained. Here we use a Plio-Pleistocene lacustrine reconstruction of mean annual air temperature (MAAT) from the Tibetan Plateau, the largest alpine permafrost region on the Earth, to constrain past and future changes in permafrost carbon storage. Clumped isotope-temperatures (Δ 47 -T) indicate warmer MAAT (~1.2 °C) prior to 2.7 Ma, and support a permafrost-free environment on the northern Tibetan Plateau in a warmer-than-present climate. Δ 47 -T indicate ~8.1 °C cooling from 2.7 Ma, coincident with Northern Hemisphere glacial intensification. Combined with climate models and global permafrost distribution, these results indicate, under conditions similar to mid-Pliocene Warm period (3.3–3.0 Ma), ~60% of alpine permafrost containing ~85 petagrams of carbon may be vulnerable to thawing compared to ~20% of circumarctic permafrost. This estimate highlights ~25% of permafrost carbon and the permafrost-climate feedback could originate in alpine areas. Other/Unknown Material permafrost SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Nature Communications 13 1 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Cheng, Feng Garzione, Carmala Li, Xiangzhong Salzmann, Ulrich Schwarz, Florian Haywood, Alan M. Tindall, Julia Nie, Junsheng Li, Lin Wang, Lin Abbott, Benjamin W. Elliott, Ben Liu, Weiguo Upadhyay, Deepshikha Arnold, Alexandrea Tripati, Aradhna Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
Estimates of the permafrost-climate feedback vary in magnitude and sign, partly because permafrost carbon stability in warmer-than-present conditions is not well constrained. Here we use a Plio-Pleistocene lacustrine reconstruction of mean annual air temperature (MAAT) from the Tibetan Plateau, the largest alpine permafrost region on the Earth, to constrain past and future changes in permafrost carbon storage. Clumped isotope-temperatures (Δ 47 -T) indicate warmer MAAT (~1.2 °C) prior to 2.7 Ma, and support a permafrost-free environment on the northern Tibetan Plateau in a warmer-than-present climate. Δ 47 -T indicate ~8.1 °C cooling from 2.7 Ma, coincident with Northern Hemisphere glacial intensification. Combined with climate models and global permafrost distribution, these results indicate, under conditions similar to mid-Pliocene Warm period (3.3–3.0 Ma), ~60% of alpine permafrost containing ~85 petagrams of carbon may be vulnerable to thawing compared to ~20% of circumarctic permafrost. This estimate highlights ~25% of permafrost carbon and the permafrost-climate feedback could originate in alpine areas. |
author |
Cheng, Feng Garzione, Carmala Li, Xiangzhong Salzmann, Ulrich Schwarz, Florian Haywood, Alan M. Tindall, Julia Nie, Junsheng Li, Lin Wang, Lin Abbott, Benjamin W. Elliott, Ben Liu, Weiguo Upadhyay, Deepshikha Arnold, Alexandrea Tripati, Aradhna |
author_facet |
Cheng, Feng Garzione, Carmala Li, Xiangzhong Salzmann, Ulrich Schwarz, Florian Haywood, Alan M. Tindall, Julia Nie, Junsheng Li, Lin Wang, Lin Abbott, Benjamin W. Elliott, Ben Liu, Weiguo Upadhyay, Deepshikha Arnold, Alexandrea Tripati, Aradhna |
author_sort |
Cheng, Feng |
title |
Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue |
title_short |
Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue |
title_full |
Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue |
title_fullStr |
Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue |
title_full_unstemmed |
Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue |
title_sort |
alpine permafrost could account for a quarter of thawed carbon based on plio-pleistocene paleoclimate analogue |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1904228 https://www.osti.gov/biblio/1904228 https://doi.org/10.1038/s41467-022-29011-2 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
http://www.osti.gov/servlets/purl/1904228 https://www.osti.gov/biblio/1904228 https://doi.org/10.1038/s41467-022-29011-2 doi:10.1038/s41467-022-29011-2 |
op_doi |
https://doi.org/10.1038/s41467-022-29011-2 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1772818663436451840 |