Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces
Effects 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 o...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/87736 2024-05-19T07:33:28+00:00 Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces Väliranta, Minna Marushchak, Maija E. Tuovinen, Juha-Pekka Lohila, Annalea Biasi, Christina Voigt, Carolina Zhang, Hui Piilo, Sanna Virtanen, Tarmo Räsänen, Aleksi Kaverin, Dmitry Pastukhov, Alexander Sannel, A. Britta K. Tuittila, Eeva-Stiina Korhola, Atte Martikainen, Pertti J. 2021 application/pdf fulltext http://urn.fi/URN:NBN:fi:jyu-202306143804 eng eng Elsevier Quaternary Science Reviews 0277-3791 264 317054 10.1016/j.quascirev.2021.107022 Research Council of Finland Suomen Akatemia Väliranta, 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. Quaternary Science Reviews , 264 , Article 107022. https://doi.org/10.1016/j.quascirev.2021.107022 CONVID_97852787 URN:NBN:fi:jyu-202306143804 http://urn.fi/URN:NBN:fi:jyu-202306143804 CC BY-NC-ND 4.0 © 2021 Elsevier Ltd. All rights reserved. openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ permafrost peatland permafrost initiation bare peat formations greenhouse gas forcing kasvihuonekaasut ikirouta turvemaat holoseeni ilmastonmuutokset paleoklimatologia article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 acceptedVersion A1 2021 ftjyvaeskylaenun 2024-04-23T23:38:28Z Effects 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. peerReviewed Article in Journal/Newspaper Arctic Arctic permafrost Subarctic JYX - Jyväskylä University Digital Archive |
institution |
Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
permafrost peatland permafrost initiation bare peat formations greenhouse gas forcing kasvihuonekaasut ikirouta turvemaat holoseeni ilmastonmuutokset paleoklimatologia |
spellingShingle |
permafrost peatland permafrost initiation bare peat formations greenhouse gas forcing kasvihuonekaasut ikirouta turvemaat holoseeni ilmastonmuutokset paleoklimatologia Väliranta, Minna Marushchak, Maija E. Tuovinen, Juha-Pekka Lohila, Annalea Biasi, Christina Voigt, Carolina Zhang, Hui Piilo, Sanna Virtanen, Tarmo Räsänen, Aleksi Kaverin, Dmitry Pastukhov, Alexander Sannel, A. Britta K. Tuittila, Eeva-Stiina Korhola, Atte Martikainen, Pertti J. Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces |
topic_facet |
permafrost peatland permafrost initiation bare peat formations greenhouse gas forcing kasvihuonekaasut ikirouta turvemaat holoseeni ilmastonmuutokset paleoklimatologia |
description |
Effects 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. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Väliranta, Minna Marushchak, Maija E. Tuovinen, Juha-Pekka Lohila, Annalea Biasi, Christina Voigt, Carolina Zhang, Hui Piilo, Sanna Virtanen, Tarmo Räsänen, Aleksi Kaverin, Dmitry Pastukhov, Alexander Sannel, A. Britta K. Tuittila, Eeva-Stiina Korhola, Atte Martikainen, Pertti J. |
author_facet |
Väliranta, Minna Marushchak, Maija E. Tuovinen, Juha-Pekka Lohila, Annalea Biasi, Christina Voigt, Carolina Zhang, Hui Piilo, Sanna Virtanen, Tarmo Räsänen, Aleksi Kaverin, Dmitry Pastukhov, Alexander Sannel, A. Britta K. Tuittila, Eeva-Stiina Korhola, Atte Martikainen, Pertti J. |
author_sort |
Väliranta, Minna |
title |
Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces |
title_short |
Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces |
title_full |
Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces |
title_fullStr |
Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces |
title_full_unstemmed |
Warming climate forcing impact from a sub-arctic peatland as a result of late Holocene permafrost aggradation and initiation of bare peat surfaces |
title_sort |
warming climate forcing impact from a sub-arctic peatland as a result of late holocene permafrost aggradation and initiation of bare peat surfaces |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://urn.fi/URN:NBN:fi:jyu-202306143804 |
genre |
Arctic Arctic permafrost Subarctic |
genre_facet |
Arctic Arctic permafrost Subarctic |
op_relation |
Quaternary Science Reviews 0277-3791 264 317054 10.1016/j.quascirev.2021.107022 Research Council of Finland Suomen Akatemia Väliranta, 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. Quaternary Science Reviews , 264 , Article 107022. https://doi.org/10.1016/j.quascirev.2021.107022 CONVID_97852787 URN:NBN:fi:jyu-202306143804 http://urn.fi/URN:NBN:fi:jyu-202306143804 |
op_rights |
CC BY-NC-ND 4.0 © 2021 Elsevier Ltd. All rights reserved. openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ |
_version_ |
1799471555009314816 |