Volatile organic compound release across a permafrost-affected peatland
As the permafrost region experiences unprecedented climate warming, accelerated decomposition rates are potentially switching these cold landscapes to a hotspot of carbon emissions. In addition to the more widely studied greenhouse gases, carbon dioxide and methane, permafrost-affected soils may als...
Published in: | Geoderma |
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Language: | English |
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2023
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Online Access: | https://curis.ku.dk/portal/da/publications/volatile-organic-compound-release-across-a-permafrostaffected-peatland(554cfbea-dca3-4a78-af3d-b6cf22d1159b).html https://doi.org/10.1016/j.geoderma.2023.116355 https://curis.ku.dk/ws/files/335964384/1_s2.0_S0016706123000320_main.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/554cfbea-dca3-4a78-af3d-b6cf22d1159b 2024-06-09T07:44:21+00:00 Volatile organic compound release across a permafrost-affected peatland Jiao, Yi Davie-Martin, Cleo L. Kramshøj, Magnus Christiansen, Casper T. Lee, Hanna Althuizen, Inge H.J. Rinnan, Riikka 2023 application/pdf https://curis.ku.dk/portal/da/publications/volatile-organic-compound-release-across-a-permafrostaffected-peatland(554cfbea-dca3-4a78-af3d-b6cf22d1159b).html https://doi.org/10.1016/j.geoderma.2023.116355 https://curis.ku.dk/ws/files/335964384/1_s2.0_S0016706123000320_main.pdf eng eng info:eu-repo/semantics/openAccess Jiao , Y , Davie-Martin , C L , Kramshøj , M , Christiansen , C T , Lee , H , Althuizen , I H J & Rinnan , R 2023 , ' Volatile organic compound release across a permafrost-affected peatland ' , Geoderma , vol. 430 , 116355 . https://doi.org/10.1016/j.geoderma.2023.116355 Arctic Climate change Palsa Peatland Permafrost thaw VOCs article 2023 ftcopenhagenunip https://doi.org/10.1016/j.geoderma.2023.116355 2024-05-16T11:29:28Z As the permafrost region experiences unprecedented climate warming, accelerated decomposition rates are potentially switching these cold landscapes to a hotspot of carbon emissions. In addition to the more widely studied greenhouse gases, carbon dioxide and methane, permafrost-affected soils may also be a source of volatile organic compounds (VOCs), but these reactive trace gases have so far received little attention. Nevertheless, VOCs can i) prolong the lifetime of atmospheric methane, ii) contribute to hazardous ozone production, and iii) lead to the formation of secondary organic aerosols. Consequently, changing VOC emissions may exert significant impacts on climate forcing factors that can both exacerbate or mitigate future climate change. Here, we conducted in situ measurements of soil and pond VOC emissions across an actively degrading permafrost-affected peatland in subarctic Norway. We used a permafrost thaw gradient as a space-for-time substitute that covered bare soil and vegetated peat plateaus, underlain by intact permafrost, and increasingly degraded permafrost landscapes: thaw slumps, thaw ponds, and vegetated thaw ponds. Results showed that every peatland landscape type was an important source of atmospheric VOCs, emitting a large variety of compounds, such as methanol, acetone, monoterpenes, sesquiterpenes, isoprene, hydrocarbons, and oxygenated VOCs. VOC composition varied considerably across the measurement period and across the permafrost thaw gradient. We observed enhanced terpenoid emissions following thaw slump degradation, highlighting the potential atmospheric impacts of permafrost thaw, due to the high chemical reactivities of terpenoid compounds. Higher VOC emission rates were observed in summer (June, July and August) compared to early autumn (September). Overall, our study demonstrates that VOCs are being emitted in significant quantities and with largely similar compositions upon permafrost thawing, inundation, and subsequent vegetation development, despite major differences in ... Article in Journal/Newspaper Arctic Climate change palsa Peat permafrost Subarctic University of Copenhagen: Research Arctic Norway Geoderma 430 116355 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Arctic Climate change Palsa Peatland Permafrost thaw VOCs |
spellingShingle |
Arctic Climate change Palsa Peatland Permafrost thaw VOCs Jiao, Yi Davie-Martin, Cleo L. Kramshøj, Magnus Christiansen, Casper T. Lee, Hanna Althuizen, Inge H.J. Rinnan, Riikka Volatile organic compound release across a permafrost-affected peatland |
topic_facet |
Arctic Climate change Palsa Peatland Permafrost thaw VOCs |
description |
As the permafrost region experiences unprecedented climate warming, accelerated decomposition rates are potentially switching these cold landscapes to a hotspot of carbon emissions. In addition to the more widely studied greenhouse gases, carbon dioxide and methane, permafrost-affected soils may also be a source of volatile organic compounds (VOCs), but these reactive trace gases have so far received little attention. Nevertheless, VOCs can i) prolong the lifetime of atmospheric methane, ii) contribute to hazardous ozone production, and iii) lead to the formation of secondary organic aerosols. Consequently, changing VOC emissions may exert significant impacts on climate forcing factors that can both exacerbate or mitigate future climate change. Here, we conducted in situ measurements of soil and pond VOC emissions across an actively degrading permafrost-affected peatland in subarctic Norway. We used a permafrost thaw gradient as a space-for-time substitute that covered bare soil and vegetated peat plateaus, underlain by intact permafrost, and increasingly degraded permafrost landscapes: thaw slumps, thaw ponds, and vegetated thaw ponds. Results showed that every peatland landscape type was an important source of atmospheric VOCs, emitting a large variety of compounds, such as methanol, acetone, monoterpenes, sesquiterpenes, isoprene, hydrocarbons, and oxygenated VOCs. VOC composition varied considerably across the measurement period and across the permafrost thaw gradient. We observed enhanced terpenoid emissions following thaw slump degradation, highlighting the potential atmospheric impacts of permafrost thaw, due to the high chemical reactivities of terpenoid compounds. Higher VOC emission rates were observed in summer (June, July and August) compared to early autumn (September). Overall, our study demonstrates that VOCs are being emitted in significant quantities and with largely similar compositions upon permafrost thawing, inundation, and subsequent vegetation development, despite major differences in ... |
format |
Article in Journal/Newspaper |
author |
Jiao, Yi Davie-Martin, Cleo L. Kramshøj, Magnus Christiansen, Casper T. Lee, Hanna Althuizen, Inge H.J. Rinnan, Riikka |
author_facet |
Jiao, Yi Davie-Martin, Cleo L. Kramshøj, Magnus Christiansen, Casper T. Lee, Hanna Althuizen, Inge H.J. Rinnan, Riikka |
author_sort |
Jiao, Yi |
title |
Volatile organic compound release across a permafrost-affected peatland |
title_short |
Volatile organic compound release across a permafrost-affected peatland |
title_full |
Volatile organic compound release across a permafrost-affected peatland |
title_fullStr |
Volatile organic compound release across a permafrost-affected peatland |
title_full_unstemmed |
Volatile organic compound release across a permafrost-affected peatland |
title_sort |
volatile organic compound release across a permafrost-affected peatland |
publishDate |
2023 |
url |
https://curis.ku.dk/portal/da/publications/volatile-organic-compound-release-across-a-permafrostaffected-peatland(554cfbea-dca3-4a78-af3d-b6cf22d1159b).html https://doi.org/10.1016/j.geoderma.2023.116355 https://curis.ku.dk/ws/files/335964384/1_s2.0_S0016706123000320_main.pdf |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Climate change palsa Peat permafrost Subarctic |
genre_facet |
Arctic Climate change palsa Peat permafrost Subarctic |
op_source |
Jiao , Y , Davie-Martin , C L , Kramshøj , M , Christiansen , C T , Lee , H , Althuizen , I H J & Rinnan , R 2023 , ' Volatile organic compound release across a permafrost-affected peatland ' , Geoderma , vol. 430 , 116355 . https://doi.org/10.1016/j.geoderma.2023.116355 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.geoderma.2023.116355 |
container_title |
Geoderma |
container_volume |
430 |
container_start_page |
116355 |
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1801373106497912832 |