Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station
International audience The Arctic is a climatically sensitive region that has experienced warming at almost 3 times the global average rate in recent decades, leading to an increase in Arctic greenness and a greater abundance of plants that emit biogenic volatile organic compounds (BVOCs). These cha...
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Online Access: | https://hal.science/hal-04382730 https://hal.science/hal-04382730/document https://hal.science/hal-04382730/file/Selimovic%20et%20al.%20-%202022%20-%20Atmospheric%20biogenic%20volatile%20organic%20compounds%20in.pdf https://doi.org/10.5194/acp-22-14037-2022 |
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ftccsdartic:oai:HAL:hal-04382730v1 2024-02-11T10:00:47+01:00 Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station Selimovic, Vanessa Ketcherside, Damien Chaliyakunnel, Sreelekha Wielgasz, Catherine Permar, Wade Angot, Hélène Millet, Dylan, B Fried, Alan Helmig, Detlev Hu, Lu Institute of Arctic Alpine Research University of Colorado Boulder (INSTAAR) University of Colorado Boulder 2022-11-02 https://hal.science/hal-04382730 https://hal.science/hal-04382730/document https://hal.science/hal-04382730/file/Selimovic%20et%20al.%20-%202022%20-%20Atmospheric%20biogenic%20volatile%20organic%20compounds%20in.pdf https://doi.org/10.5194/acp-22-14037-2022 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-14037-2022 hal-04382730 https://hal.science/hal-04382730 https://hal.science/hal-04382730/document https://hal.science/hal-04382730/file/Selimovic%20et%20al.%20-%202022%20-%20Atmospheric%20biogenic%20volatile%20organic%20compounds%20in.pdf doi:10.5194/acp-22-14037-2022 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-04382730 Atmospheric Chemistry and Physics, 2022, 22, pp.14037-14058. ⟨10.5194/acp-22-14037-2022⟩ [SDE]Environmental Sciences [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.5194/acp-22-14037-2022 2024-01-13T23:39:04Z International audience The Arctic is a climatically sensitive region that has experienced warming at almost 3 times the global average rate in recent decades, leading to an increase in Arctic greenness and a greater abundance of plants that emit biogenic volatile organic compounds (BVOCs). These changes in atmospheric emissions are expected to significantly modify the overall oxidative chemistry of the region and lead to changes in VOC composition and abundance, with implications for atmospheric processes. Nonetheless, observations needed to constrain our current understanding of these issues in this critical environment are sparse. This work presents novel atmospheric in situ proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) measurements of VOCs at Toolik Field Station (TFS; 68 • 38 N, 149 • 36' W), in the Alaskan Arctic tundra during May-June 2019. We employ a custom nested grid version of the GEOS-Chem chemical transport model (CTM), driven with MEGANv2.1 (Model of Emissions of Gases and Aerosols from Nature version 2.1) biogenic emissions for Alaska at 0.25 • × 0.3125 • resolution, to interpret the observations in terms of their constraints on BVOC emissions, total reactive organic carbon (ROC) composition, and calculated OH reactivity (OHr) in this environment. We find total ambient mole fraction of 78 identified VOCs to be 6.3 ± 0.4 ppbv (10.8 ± 0.5 ppbC), with overwhelming (> 80 %) contributions are from short-chain oxygenated VOCs (OVOCs) including methanol, acetone and formaldehyde. Isoprene was the most abundant terpene identified. GEOS-Chem captures the observed isoprene (and its oxidation products), acetone and acetaldehyde abundances within the combined model and observation uncertainties (±25 %), but underestimates other OVOCs including methanol, formaldehyde, formic acid and acetic acid by a factor of 3 to 12. The negative model bias for methanol is attributed to underestimated biogenic methanol emissions for the Alaskan tundra in MEGANv2.1. Observed formaldehyde mole ... Article in Journal/Newspaper Arctic Tundra Alaska Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Atmospheric Chemistry and Physics 22 21 14037 14058 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDE]Environmental Sciences [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Selimovic, Vanessa Ketcherside, Damien Chaliyakunnel, Sreelekha Wielgasz, Catherine Permar, Wade Angot, Hélène Millet, Dylan, B Fried, Alan Helmig, Detlev Hu, Lu Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station |
topic_facet |
[SDE]Environmental Sciences [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The Arctic is a climatically sensitive region that has experienced warming at almost 3 times the global average rate in recent decades, leading to an increase in Arctic greenness and a greater abundance of plants that emit biogenic volatile organic compounds (BVOCs). These changes in atmospheric emissions are expected to significantly modify the overall oxidative chemistry of the region and lead to changes in VOC composition and abundance, with implications for atmospheric processes. Nonetheless, observations needed to constrain our current understanding of these issues in this critical environment are sparse. This work presents novel atmospheric in situ proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) measurements of VOCs at Toolik Field Station (TFS; 68 • 38 N, 149 • 36' W), in the Alaskan Arctic tundra during May-June 2019. We employ a custom nested grid version of the GEOS-Chem chemical transport model (CTM), driven with MEGANv2.1 (Model of Emissions of Gases and Aerosols from Nature version 2.1) biogenic emissions for Alaska at 0.25 • × 0.3125 • resolution, to interpret the observations in terms of their constraints on BVOC emissions, total reactive organic carbon (ROC) composition, and calculated OH reactivity (OHr) in this environment. We find total ambient mole fraction of 78 identified VOCs to be 6.3 ± 0.4 ppbv (10.8 ± 0.5 ppbC), with overwhelming (> 80 %) contributions are from short-chain oxygenated VOCs (OVOCs) including methanol, acetone and formaldehyde. Isoprene was the most abundant terpene identified. GEOS-Chem captures the observed isoprene (and its oxidation products), acetone and acetaldehyde abundances within the combined model and observation uncertainties (±25 %), but underestimates other OVOCs including methanol, formaldehyde, formic acid and acetic acid by a factor of 3 to 12. The negative model bias for methanol is attributed to underestimated biogenic methanol emissions for the Alaskan tundra in MEGANv2.1. Observed formaldehyde mole ... |
author2 |
Institute of Arctic Alpine Research University of Colorado Boulder (INSTAAR) University of Colorado Boulder |
format |
Article in Journal/Newspaper |
author |
Selimovic, Vanessa Ketcherside, Damien Chaliyakunnel, Sreelekha Wielgasz, Catherine Permar, Wade Angot, Hélène Millet, Dylan, B Fried, Alan Helmig, Detlev Hu, Lu |
author_facet |
Selimovic, Vanessa Ketcherside, Damien Chaliyakunnel, Sreelekha Wielgasz, Catherine Permar, Wade Angot, Hélène Millet, Dylan, B Fried, Alan Helmig, Detlev Hu, Lu |
author_sort |
Selimovic, Vanessa |
title |
Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station |
title_short |
Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station |
title_full |
Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station |
title_fullStr |
Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station |
title_full_unstemmed |
Atmospheric biogenic volatile organic compounds in the Alaskan Arctic tundra: constraints from measurements at Toolik Field Station |
title_sort |
atmospheric biogenic volatile organic compounds in the alaskan arctic tundra: constraints from measurements at toolik field station |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04382730 https://hal.science/hal-04382730/document https://hal.science/hal-04382730/file/Selimovic%20et%20al.%20-%202022%20-%20Atmospheric%20biogenic%20volatile%20organic%20compounds%20in.pdf https://doi.org/10.5194/acp-22-14037-2022 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra Alaska |
genre_facet |
Arctic Tundra Alaska |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-04382730 Atmospheric Chemistry and Physics, 2022, 22, pp.14037-14058. ⟨10.5194/acp-22-14037-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-14037-2022 hal-04382730 https://hal.science/hal-04382730 https://hal.science/hal-04382730/document https://hal.science/hal-04382730/file/Selimovic%20et%20al.%20-%202022%20-%20Atmospheric%20biogenic%20volatile%20organic%20compounds%20in.pdf doi:10.5194/acp-22-14037-2022 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-22-14037-2022 |
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Atmospheric Chemistry and Physics |
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