On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration
We present direct eddy covariance measurements of aerosol number fluxes, dominated by sub-50 nm particles, at the edge of an ice floe drifting in the central Arctic Ocean. The measurements were made during the ice-breaker borne ASCOS (Arctic Summer Cloud Ocean Study) expedition in August 2008 betwee...
Published in: | Atmospheric Chemistry and Physics |
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Format: | Article in Journal/Newspaper |
Language: | English |
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European Geosciences Union
2011
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Online Access: | https://eprints.whiterose.ac.uk/77221/ https://eprints.whiterose.ac.uk/77221/7/Held_2011_acp-11-3093-2011_with_coversheet.pdf https://doi.org/10.5194/acp-11-3093-2011 |
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ftleedsuniv:oai:eprints.whiterose.ac.uk:77221 2024-06-02T07:59:43+00:00 On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration Held, A Brooks, IM Leck, C Tjernstrom, M 2011 text https://eprints.whiterose.ac.uk/77221/ https://eprints.whiterose.ac.uk/77221/7/Held_2011_acp-11-3093-2011_with_coversheet.pdf https://doi.org/10.5194/acp-11-3093-2011 en eng European Geosciences Union https://eprints.whiterose.ac.uk/77221/7/Held_2011_acp-11-3093-2011_with_coversheet.pdf Held, A, Brooks, IM, Leck, C et al. (1 more author) (2011) On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration. Atmospheric Chemistry and Physics, 11 (7). 3093 - 3105. ISSN 1680-7316 Article NonPeerReviewed 2011 ftleedsuniv https://doi.org/10.5194/acp-11-3093-2011 2024-05-06T12:40:54Z We present direct eddy covariance measurements of aerosol number fluxes, dominated by sub-50 nm particles, at the edge of an ice floe drifting in the central Arctic Ocean. The measurements were made during the ice-breaker borne ASCOS (Arctic Summer Cloud Ocean Study) expedition in August 2008 between 2-10° W longitude and 87-87.5° N latitude. The median aerosol transfer velocities over different surface types (open water leads, ice ridges, snow and ice surfaces) ranged from 0.27 to 0.68 mm s−1 during deposition-dominated episodes. Emission periods were observed more frequently over the open lead, while the snow behaved primarily as a deposition surface. Directly measured aerosol fluxes were compared with particle deposition parameterizations in order to estimate the emission flux from the observed net aerosol flux. Finally, the contribution of the open lead particle source to atmospheric variations in particle number concentration was evaluated and compared with the observed temporal evolution of particle number. The direct emission of aerosol particles from the open lead can explain only 5ĝ€"10% of the observed particle number variation in the mixing layer close to the surface. Article in Journal/Newspaper Arctic Arctic Arctic Ocean White Rose Research Online (Universities of Leeds, Sheffield & York) Arctic Arctic Ocean Breaker ENVELOPE(-67.257,-67.257,-67.874,-67.874) Atmospheric Chemistry and Physics 11 7 3093 3105 |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
We present direct eddy covariance measurements of aerosol number fluxes, dominated by sub-50 nm particles, at the edge of an ice floe drifting in the central Arctic Ocean. The measurements were made during the ice-breaker borne ASCOS (Arctic Summer Cloud Ocean Study) expedition in August 2008 between 2-10° W longitude and 87-87.5° N latitude. The median aerosol transfer velocities over different surface types (open water leads, ice ridges, snow and ice surfaces) ranged from 0.27 to 0.68 mm s−1 during deposition-dominated episodes. Emission periods were observed more frequently over the open lead, while the snow behaved primarily as a deposition surface. Directly measured aerosol fluxes were compared with particle deposition parameterizations in order to estimate the emission flux from the observed net aerosol flux. Finally, the contribution of the open lead particle source to atmospheric variations in particle number concentration was evaluated and compared with the observed temporal evolution of particle number. The direct emission of aerosol particles from the open lead can explain only 5ĝ€"10% of the observed particle number variation in the mixing layer close to the surface. |
format |
Article in Journal/Newspaper |
author |
Held, A Brooks, IM Leck, C Tjernstrom, M |
spellingShingle |
Held, A Brooks, IM Leck, C Tjernstrom, M On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration |
author_facet |
Held, A Brooks, IM Leck, C Tjernstrom, M |
author_sort |
Held, A |
title |
On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration |
title_short |
On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration |
title_full |
On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration |
title_fullStr |
On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration |
title_full_unstemmed |
On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration |
title_sort |
on the potential contribution of open lead particle emissions to the central arctic aerosol concentration |
publisher |
European Geosciences Union |
publishDate |
2011 |
url |
https://eprints.whiterose.ac.uk/77221/ https://eprints.whiterose.ac.uk/77221/7/Held_2011_acp-11-3093-2011_with_coversheet.pdf https://doi.org/10.5194/acp-11-3093-2011 |
long_lat |
ENVELOPE(-67.257,-67.257,-67.874,-67.874) |
geographic |
Arctic Arctic Ocean Breaker |
geographic_facet |
Arctic Arctic Ocean Breaker |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
https://eprints.whiterose.ac.uk/77221/7/Held_2011_acp-11-3093-2011_with_coversheet.pdf Held, A, Brooks, IM, Leck, C et al. (1 more author) (2011) On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration. Atmospheric Chemistry and Physics, 11 (7). 3093 - 3105. ISSN 1680-7316 |
op_doi |
https://doi.org/10.5194/acp-11-3093-2011 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
11 |
container_issue |
7 |
container_start_page |
3093 |
op_container_end_page |
3105 |
_version_ |
1800743835211399168 |