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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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-117336 2023-05-15T17:55:15+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 2022 https://repository.hkust.edu.hk/ir/Record/1783.1-117336 https://doi.org/10.1038/s41467-022-29011-2 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2041-1723&rft.volume=13&rft.issue=1&rft.date=2022&rft.spage=&rft.aulast=Cheng&rft.aufirst=&rft.atitle=Alpine+permafrost+could+account+for+a+quarter+of+thawed+carbon+based+on+Plio-Pleistocene+paleoclimate+analogue&rft.title=Nature+Communications http://www.scopus.com/record/display.url?eid=2-s2.0-85126647588&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000769063600014 English eng Nature Research https://repository.hkust.edu.hk/ir/Record/1783.1-117336 Nature Communications, v. 13, (1), March 2022, article number 1329 2041-1723 https://doi.org/10.1038/s41467-022-29011-2 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2041-1723&rft.volume=13&rft.issue=1&rft.date=2022&rft.spage=&rft.aulast=Cheng&rft.aufirst=&rft.atitle=Alpine+permafrost+could+account+for+a+quarter+of+thawed+carbon+based+on+Plio-Pleistocene+paleoclimate+analogue&rft.title=Nature+Communications http://www.scopus.com/record/display.url?eid=2-s2.0-85126647588&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000769063600014 Article 2022 ftunivsthongkong https://doi.org/10.1038/s41467-022-29011-2 2022-09-09T00:08:40Z 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 (Δ47-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. Δ47-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. Article in Journal/Newspaper permafrost The Hong Kong University of Science and Technology: HKUST Institutional Repository Nature Communications 13 1 |
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Open Polar |
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The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
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 (Δ47-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. Δ47-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. |
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Article in Journal/Newspaper |
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 |
spellingShingle |
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 |
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 |
publisher |
Nature Research |
publishDate |
2022 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-117336 https://doi.org/10.1038/s41467-022-29011-2 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2041-1723&rft.volume=13&rft.issue=1&rft.date=2022&rft.spage=&rft.aulast=Cheng&rft.aufirst=&rft.atitle=Alpine+permafrost+could+account+for+a+quarter+of+thawed+carbon+based+on+Plio-Pleistocene+paleoclimate+analogue&rft.title=Nature+Communications http://www.scopus.com/record/display.url?eid=2-s2.0-85126647588&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000769063600014 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-117336 Nature Communications, v. 13, (1), March 2022, article number 1329 2041-1723 https://doi.org/10.1038/s41467-022-29011-2 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=2041-1723&rft.volume=13&rft.issue=1&rft.date=2022&rft.spage=&rft.aulast=Cheng&rft.aufirst=&rft.atitle=Alpine+permafrost+could+account+for+a+quarter+of+thawed+carbon+based+on+Plio-Pleistocene+paleoclimate+analogue&rft.title=Nature+Communications http://www.scopus.com/record/display.url?eid=2-s2.0-85126647588&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000769063600014 |
op_doi |
https://doi.org/10.1038/s41467-022-29011-2 |
container_title |
Nature Communications |
container_volume |
13 |
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1 |
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1766163166889246720 |