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dc.contributor.authorCheng, F.
dc.contributor.authorGarzione, C.
dc.contributor.authorLi, X.
dc.contributor.authorSalzmann, U.
dc.contributor.authorSchwarz, F.
dc.contributor.authorHaywood, A.M.
dc.contributor.authorTindall, J.
dc.contributor.authorNie, J.
dc.contributor.authorLi, L.
dc.contributor.authorWang, L.
dc.contributor.authorAbbott, B.W.
dc.contributor.authorElliott, B.
dc.contributor.authorLiu, W.
dc.contributor.authorUpadhyay, D.
dc.contributor.authorArnold, A.
dc.contributor.authorTripati, A.
dc.date.accessioned2022-04-25T20:52:01Z
dc.date.available2022-04-25T20:52:01Z
dc.date.issued2022
dc.identifier.citationCheng, F., Garzione, C., Li, X., Salzmann, U., Schwarz, F., Haywood, A. M., Tindall, J., Nie, J., Li, L., Wang, L., Abbott, B. W., Elliott, B., Liu, W., Upadhyay, D., Arnold, A., & Tripati, A. (2022). Alpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue. Nature Communications.
dc.identifier.issn2041-1723
dc.identifier.pmid35288572
dc.identifier.doi10.1038/s41467-022-29011-2
dc.identifier.urihttp://hdl.handle.net/10150/664118
dc.description.abstractEstimates 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. © 2022, The Author(s).
dc.language.isoen
dc.publisherNature Research
dc.rightsCopyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleAlpine permafrost could account for a quarter of thawed carbon based on Plio-Pleistocene paleoclimate analogue
dc.typeArticle
dc.typetext
dc.contributor.departmentCollege of Science, University of Arizona
dc.identifier.journalNature Communications
dc.description.noteOpen access journal
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleNature Communications
refterms.dateFOA2022-04-25T20:52:01Z


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Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as Copyright © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License.