Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air
International audience Measurements of acetone, methanol, acetaldehyde and a range of non-methane hydrocarbons have been made in North Atlantic marine air at the Mace Head observatory. Under maritime conditions the combination of OVOCs (acetone, methanol and acetaldehyde) contributed up to 85% of th...
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ftinsu:oai:HAL:hal-00295705v1 2023-11-12T04:22:00+01:00 Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air Lewis, A. C. Hopkins, J. R. Carpenter, L. J. Stanton, J. Read, K. A. Pilling, M. J. Department of Chemistry York, UK University of York York, UK School of Chemistry Leeds University of Leeds 2005-08-01 https://hal.science/hal-00295705 https://hal.science/hal-00295705/document https://hal.science/hal-00295705/file/acp-5-1963-2005.pdf en eng HAL CCSD European Geosciences Union hal-00295705 https://hal.science/hal-00295705 https://hal.science/hal-00295705/document https://hal.science/hal-00295705/file/acp-5-1963-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00295705 Atmospheric Chemistry and Physics, 2005, 5 (7), pp.1963-1974 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2005 ftinsu 2023-10-25T16:29:59Z International audience Measurements of acetone, methanol, acetaldehyde and a range of non-methane hydrocarbons have been made in North Atlantic marine air at the Mace Head observatory. Under maritime conditions the combination of OVOCs (acetone, methanol and acetaldehyde) contributed up to 85% of the total mass of measured non methane organics in air and up to 80% of the OH radical organic sink, when compared with the sum of all other organic compounds including non-methane hydrocarbons, DMS and OH-reactive halocarbons (trichloromethane and tetrachloroethylene). The observations showed anomalies in the variance and abundance of acetaldehyde and acetone over that expected for species with a remote terrestrial emission source and OH controlled chemical lifetime. A detailed model incorporating an explicit chemical degradation mechanism indicated in situ formation during air mass transport was on timescales longer than the atmospheric lifetime of precursor hydrocarbons or primary emission. The period over which this process was significant was similar to that of airmass motion on intercontinental scales, and formation via this route may reproduce that of a widespread diffuse source. The model indicates that continued short chain OVOC formation occurs many days from the point of emission, via longer lived intermediates of oxidation such as organic peroxides and long chain alcohols. Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU Mace ENVELOPE(155.883,155.883,-81.417,-81.417) |
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Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Lewis, A. C. Hopkins, J. R. Carpenter, L. J. Stanton, J. Read, K. A. Pilling, M. J. Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Measurements of acetone, methanol, acetaldehyde and a range of non-methane hydrocarbons have been made in North Atlantic marine air at the Mace Head observatory. Under maritime conditions the combination of OVOCs (acetone, methanol and acetaldehyde) contributed up to 85% of the total mass of measured non methane organics in air and up to 80% of the OH radical organic sink, when compared with the sum of all other organic compounds including non-methane hydrocarbons, DMS and OH-reactive halocarbons (trichloromethane and tetrachloroethylene). The observations showed anomalies in the variance and abundance of acetaldehyde and acetone over that expected for species with a remote terrestrial emission source and OH controlled chemical lifetime. A detailed model incorporating an explicit chemical degradation mechanism indicated in situ formation during air mass transport was on timescales longer than the atmospheric lifetime of precursor hydrocarbons or primary emission. The period over which this process was significant was similar to that of airmass motion on intercontinental scales, and formation via this route may reproduce that of a widespread diffuse source. The model indicates that continued short chain OVOC formation occurs many days from the point of emission, via longer lived intermediates of oxidation such as organic peroxides and long chain alcohols. |
author2 |
Department of Chemistry York, UK University of York York, UK School of Chemistry Leeds University of Leeds |
format |
Article in Journal/Newspaper |
author |
Lewis, A. C. Hopkins, J. R. Carpenter, L. J. Stanton, J. Read, K. A. Pilling, M. J. |
author_facet |
Lewis, A. C. Hopkins, J. R. Carpenter, L. J. Stanton, J. Read, K. A. Pilling, M. J. |
author_sort |
Lewis, A. C. |
title |
Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air |
title_short |
Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air |
title_full |
Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air |
title_fullStr |
Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air |
title_full_unstemmed |
Sources and sinks of acetone, methanol, and acetaldehyde in North Atlantic marine air |
title_sort |
sources and sinks of acetone, methanol, and acetaldehyde in north atlantic marine air |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00295705 https://hal.science/hal-00295705/document https://hal.science/hal-00295705/file/acp-5-1963-2005.pdf |
long_lat |
ENVELOPE(155.883,155.883,-81.417,-81.417) |
geographic |
Mace |
geographic_facet |
Mace |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00295705 Atmospheric Chemistry and Physics, 2005, 5 (7), pp.1963-1974 |
op_relation |
hal-00295705 https://hal.science/hal-00295705 https://hal.science/hal-00295705/document https://hal.science/hal-00295705/file/acp-5-1963-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782337174237085696 |