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dc.contributor.authorVäliranta, Minna
dc.contributor.authorMarushchak, Maija E.
dc.contributor.authorTuovinen, Juha-Pekka
dc.contributor.authorLohila, Annalea
dc.contributor.authorBiasi, Christina
dc.contributor.authorVoigt, Carolina
dc.contributor.authorZhang, Hui
dc.contributor.authorPiilo, Sanna
dc.contributor.authorVirtanen, Tarmo
dc.contributor.authorRäsänen, Aleksi
dc.contributor.authorKaverin, Dmitry
dc.contributor.authorPastukhov, Alexander
dc.contributor.authorSannel, A. Britta K.
dc.contributor.authorTuittila, Eeva-Stiina
dc.contributor.authorKorhola, Atte
dc.contributor.authorMartikainen, Pertti J.
dc.date.accessioned2023-06-14T07:11:02Z
dc.date.available2023-06-14T07:11:02Z
dc.date.issued2021
dc.identifier.citationVäliranta, M., Marushchak, M. E., Tuovinen, J.-P., Lohila, A., Biasi, C., Voigt, C., Zhang, H., Piilo, S., Virtanen, T., Räsänen, A., Kaverin, D., Pastukhov, A., Sannel, A. B. K., Tuittila, E.-S., Korhola, A., & Martikainen, P. J. (2021). Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces. <i>Quaternary Science Reviews</i>, <i>264</i>, Article 107022. <a href="https://doi.org/10.1016/j.quascirev.2021.107022" target="_blank">https://doi.org/10.1016/j.quascirev.2021.107022</a>
dc.identifier.otherCONVID_97852787
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/87736
dc.description.abstractEffects of permafrost aggradation on greenhouse gas (GHG) dynamics and climate forcing have not been previously quantified. Here, we reconstruct changes in GHG balances over the late Holocene for a sub-arctic peatland by applying palaeoecological data combined with measured GHG flux data, focusing on the impact of permafrost aggradation in particular. Our data suggest that permafrost initiation around 3000 years ago resulted in GHG emissions, thereby slightly weakening the general long-term peatland cooling impact. As a novel discovery, based on our chronological data of bare peat surfaces, we found that current sporadic bare peat surfaces in subarctic regions are probably remnants of more extensive bare peat areas formed by permafrost initiation. Paradoxically, our data suggest that permafrost initiation triggered by the late Holocene cooling climate generated a positive radiative forcing and a short-term climate warming feedback, mitigating the general insolation-driven late Holocene summer cooling trend. Our work with historical data demonstrates the importance of permafrost peatland dynamics for atmospheric GHG concentrations, both in the past and future. It suggests that, while thawing permafrost is likely to initially trigger a change towards wetter conditions and consequent increase in CH4 forcing, eventually the accelerated C uptake capacity under warmer climate may overcome the thaw effect when a new hydrological balance becomes established.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofseriesQuaternary Science Reviews
dc.rightsCC BY-NC-ND 4.0
dc.subject.otherpermafrost peatland
dc.subject.otherpermafrost initiation
dc.subject.otherbare peat formations
dc.subject.othergreenhouse gas forcing
dc.titleWarming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202306143804
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineYmpäristötiedefi
dc.contributor.oppiaineEnvironmental Scienceen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn0277-3791
dc.relation.volume264
dc.type.versionacceptedVersion
dc.rights.copyright© 2021 Elsevier Ltd. All rights reserved.
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber317054
dc.subject.ysokasvihuonekaasut
dc.subject.ysoikirouta
dc.subject.ysoturvemaat
dc.subject.ysoholoseeni
dc.subject.ysoilmastonmuutokset
dc.subject.ysopaleoklimatologia
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p4729
jyx.subject.urihttp://www.yso.fi/onto/yso/p20612
jyx.subject.urihttp://www.yso.fi/onto/yso/p17343
jyx.subject.urihttp://www.yso.fi/onto/yso/p37769
jyx.subject.urihttp://www.yso.fi/onto/yso/p5729
jyx.subject.urihttp://www.yso.fi/onto/yso/p16018
dc.rights.urlhttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.1016/j.quascirev.2021.107022
dc.relation.funderResearch Council of Finlanden
dc.relation.funderSuomen Akatemiafi
jyx.fundingprogramPostdoctoral Researcher, AoFen
jyx.fundingprogramTutkijatohtori, SAfi
jyx.fundinginformationMV, CB, AK, MM, CV, E-ST and J-PT acknowledge funding from the Academy of Finland (project codes: 1133515, 1140900, 132045, 140863, 1296519, 12964231, 296519, 317054, 332196 and 296423). The University of Eastern Finland provided strategic funding for radiocarbon analyses. Fieldwork campaigns in Seida were financially supported by the EU project PAGE 21 under contract no. GA282700 and the Nordic Centre of Excellence DEFROST (Impact of a changing cryosphere - Depicting ecosystem-climate feedbacks from permafrost, snow and ice) and CARBO-North, EU 6th Framework Program, contract number 036993.
dc.type.okmA1


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