Volatile organic compound fluxes in a subarctic peatland and lake

Ecosystems exchange climate-relevant trace gases with the atmosphere, including volatile organic compounds (VOCs) that are a small but highly reactive part of the carbon cycle. VOCs have important ecological functions and implications for atmospheric chemistry and climate.We measured the ecosystem-l...

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Autores: Seco, Roger, Holst, Thomas, Sillesen Matzen, Mikkel, Westergaard-Nielsen, Andreas, Li, Tao, Simin, Tihomir, Jansen, Joachim, Crill, Patrick, Friborg, Thomas, Rinne, Janne, Rinnan, Riikka
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/344967
Acesso em linha:http://hdl.handle.net/10261/344967
https://api.elsevier.com/content/abstract/scopus_id/85096466976
Access Level:acceso abierto
Palavra-chave:Volatile organic compounds (VOCs)
Atmospheric chemistry
Gases
Climate
http://metadata.un.org/sdg/13
Take urgent action to combat climate change and its impacts
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spelling Volatile organic compound fluxes in a subarctic peatland and lakeSeco, RogerHolst, ThomasSillesen Matzen, MikkelWestergaard-Nielsen, AndreasLi, TaoSimin, TihomirJansen, JoachimCrill, PatrickFriborg, ThomasRinne, JanneRinnan, RiikkaVolatile organic compounds (VOCs)Atmospheric chemistryGasesClimatehttp://metadata.un.org/sdg/13Take urgent action to combat climate change and its impactsEcosystems exchange climate-relevant trace gases with the atmosphere, including volatile organic compounds (VOCs) that are a small but highly reactive part of the carbon cycle. VOCs have important ecological functions and implications for atmospheric chemistry and climate.We measured the ecosystem-level surface-atmosphere VOC fluxes using the eddy covariance technique at a shallow subarctic lake and an adjacent graminoid-dominated fen in northern Sweden during two contrasting periods: the peak growing season (mid-July) and the senescent period post-growing season (September-October). In July, the fen was a net source of methanol, acetaldehyde, acetone, dimethyl sulfide, isoprene, and monoterpenes. All of these VOCs showed a diel cycle of emission with maxima around noon and isoprene dominated the fluxes (93±22 μmolm-2 d-1, mean±SE). Isoprene emission was strongly stimulated by temperature and presented a steeper response to temperature (Q10 = 14:5) than that typically assumed in biogenic emission models, supporting the high temperature sensitivity of arctic vegetation. In September, net emissions of methanol and isoprene were drastically reduced, while acetaldehyde and acetone were deposited to the fen, with rates of up to-6:7±2:8 μmolm-2 d-1 for acetaldehyde. Remarkably, the lake was a sink for acetaldehyde and acetone during both periods, with average fluxes up to -19±1:3 μmolm-2 d-1 of acetone in July and up to-8:5± 2:3 μmolm-2 d-1 of acetaldehyde in September. The deposition of both carbonyl compounds correlated with their atmospheric mixing ratios, with deposition velocities of-0:23± 0:01 and-0:68±0:03 cm s-1 for acetone and acetaldehyde, respectively. Even though these VOC fluxes represented less than 0.5%and less than 5%of the CO2 and CH4 net carbon ecosystem exchange, respectively, VOCs alter the oxidation capacity of the atmosphere. Thus, understanding the response of their emissions to climate change is important for accurate prediction of the future climatic conditions in this rapidly warming area of the planet.This research has been supported by the European Research Council (TUVOLU – Tundra biogenic volatile emissions in the 21st century, grant no. 771012) and the Marie Skłodowska-Curie actions (HIVOL, grant no. 751684) under the European Union's Horizon 2020 research and innovation programme, the Independent Research Fund Denmark | Natural Sciences, the Swedish Research Council (grant no. 2013-5562), the European Commission under the Seventh Framework Programme (PAGE21, grant no. 282700), and by the Danish National Research Foundation (CENPERM DNRF100).Peer reviewedEuropean Geosciences UnionEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/344967https://api.elsevier.com/content/abstract/scopus_id/85096466976reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/282700Atmospheric Chemistry and Physicshttps://doi.org/10.5194/acp-20-13399-2020Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3449672026-05-22T06:33:51Z
dc.title.none.fl_str_mv Volatile organic compound fluxes in a subarctic peatland and lake
title Volatile organic compound fluxes in a subarctic peatland and lake
spellingShingle Volatile organic compound fluxes in a subarctic peatland and lake
Seco, Roger
Volatile organic compounds (VOCs)
Atmospheric chemistry
Gases
Climate
http://metadata.un.org/sdg/13
Take urgent action to combat climate change and its impacts
title_short Volatile organic compound fluxes in a subarctic peatland and lake
title_full Volatile organic compound fluxes in a subarctic peatland and lake
title_fullStr Volatile organic compound fluxes in a subarctic peatland and lake
title_full_unstemmed Volatile organic compound fluxes in a subarctic peatland and lake
title_sort Volatile organic compound fluxes in a subarctic peatland and lake
dc.creator.none.fl_str_mv Seco, Roger
Holst, Thomas
Sillesen Matzen, Mikkel
Westergaard-Nielsen, Andreas
Li, Tao
Simin, Tihomir
Jansen, Joachim
Crill, Patrick
Friborg, Thomas
Rinne, Janne
Rinnan, Riikka
author Seco, Roger
author_facet Seco, Roger
Holst, Thomas
Sillesen Matzen, Mikkel
Westergaard-Nielsen, Andreas
Li, Tao
Simin, Tihomir
Jansen, Joachim
Crill, Patrick
Friborg, Thomas
Rinne, Janne
Rinnan, Riikka
author_role author
author2 Holst, Thomas
Sillesen Matzen, Mikkel
Westergaard-Nielsen, Andreas
Li, Tao
Simin, Tihomir
Jansen, Joachim
Crill, Patrick
Friborg, Thomas
Rinne, Janne
Rinnan, Riikka
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Volatile organic compounds (VOCs)
Atmospheric chemistry
Gases
Climate
http://metadata.un.org/sdg/13
Take urgent action to combat climate change and its impacts
topic Volatile organic compounds (VOCs)
Atmospheric chemistry
Gases
Climate
http://metadata.un.org/sdg/13
Take urgent action to combat climate change and its impacts
description Ecosystems exchange climate-relevant trace gases with the atmosphere, including volatile organic compounds (VOCs) that are a small but highly reactive part of the carbon cycle. VOCs have important ecological functions and implications for atmospheric chemistry and climate.We measured the ecosystem-level surface-atmosphere VOC fluxes using the eddy covariance technique at a shallow subarctic lake and an adjacent graminoid-dominated fen in northern Sweden during two contrasting periods: the peak growing season (mid-July) and the senescent period post-growing season (September-October). In July, the fen was a net source of methanol, acetaldehyde, acetone, dimethyl sulfide, isoprene, and monoterpenes. All of these VOCs showed a diel cycle of emission with maxima around noon and isoprene dominated the fluxes (93±22 μmolm-2 d-1, mean±SE). Isoprene emission was strongly stimulated by temperature and presented a steeper response to temperature (Q10 = 14:5) than that typically assumed in biogenic emission models, supporting the high temperature sensitivity of arctic vegetation. In September, net emissions of methanol and isoprene were drastically reduced, while acetaldehyde and acetone were deposited to the fen, with rates of up to-6:7±2:8 μmolm-2 d-1 for acetaldehyde. Remarkably, the lake was a sink for acetaldehyde and acetone during both periods, with average fluxes up to -19±1:3 μmolm-2 d-1 of acetone in July and up to-8:5± 2:3 μmolm-2 d-1 of acetaldehyde in September. The deposition of both carbonyl compounds correlated with their atmospheric mixing ratios, with deposition velocities of-0:23± 0:01 and-0:68±0:03 cm s-1 for acetone and acetaldehyde, respectively. Even though these VOC fluxes represented less than 0.5%and less than 5%of the CO2 and CH4 net carbon ecosystem exchange, respectively, VOCs alter the oxidation capacity of the atmosphere. Thus, understanding the response of their emissions to climate change is important for accurate prediction of the future climatic conditions in this rapidly warming area of the planet.
publishDate 2020
dc.date.none.fl_str_mv 2020
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/344967
https://api.elsevier.com/content/abstract/scopus_id/85096466976
url http://hdl.handle.net/10261/344967
https://api.elsevier.com/content/abstract/scopus_id/85096466976
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/282700
Atmospheric Chemistry and Physics
https://doi.org/10.5194/acp-20-13399-2020
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv European Geosciences Union
publisher.none.fl_str_mv European Geosciences Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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