Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean
Temperature and particle number concentration profiles were measured at small height intervals above open and frozen leads and snow surfaces in the central Arctic. The device used was a gradient pole designed to investigate potential particle sources over the central Arctic Ocean. The collected data...
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ftleibnizopen:oai:oai.leibnizopen.de:3nbgXIkBdbrxVwz6pCfa 2023-07-30T04:01:09+02:00 Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean Held, A. Orsini, D.A. Vaattovaara, P. Tjernström, M. Leck, C. 2011 application/pdf https://doi.org/10.34657/1113 https://oa.tib.eu/renate/handle/123456789/808 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Atmospheric Measurement Techniques, Volume 4, Issue 8, Page 1603-1616 aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux 550 article Text 2011 ftleibnizopen https://doi.org/10.34657/1113 2023-07-16T23:32:18Z Temperature and particle number concentration profiles were measured at small height intervals above open and frozen leads and snow surfaces in the central Arctic. The device used was a gradient pole designed to investigate potential particle sources over the central Arctic Ocean. The collected data were fitted according to basic logarithmic flux-profile relationships to calculate the sensible heat flux and particle deposition velocity. Independent measurements by the eddy covariance technique were conducted at the same location. General agreement was observed between the two methods when logarithmic profiles could be fitted to the gradient pole data. In general, snow surfaces behaved as weak particle sinks with a maximum deposition velocity vd = 1.3 mm s−1 measured with the gradient pole. The lead surface behaved as a weak particle source before freeze-up with an upward flux Fc = 5.7 × 104 particles m−2 s−1, and as a relatively strong heat source after freeze-up, with an upward maximum sensible heat flux H = 13.1 W m−2. Over the frozen lead, however, we were unable to resolve any significant aerosol profiles. publishedVersion Article in Journal/Newspaper Arctic Arctic Ocean LeibnizOpen (The Leibniz Association) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux 550 |
spellingShingle |
aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux 550 Held, A. Orsini, D.A. Vaattovaara, P. Tjernström, M. Leck, C. Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
topic_facet |
aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux 550 |
description |
Temperature and particle number concentration profiles were measured at small height intervals above open and frozen leads and snow surfaces in the central Arctic. The device used was a gradient pole designed to investigate potential particle sources over the central Arctic Ocean. The collected data were fitted according to basic logarithmic flux-profile relationships to calculate the sensible heat flux and particle deposition velocity. Independent measurements by the eddy covariance technique were conducted at the same location. General agreement was observed between the two methods when logarithmic profiles could be fitted to the gradient pole data. In general, snow surfaces behaved as weak particle sinks with a maximum deposition velocity vd = 1.3 mm s−1 measured with the gradient pole. The lead surface behaved as a weak particle source before freeze-up with an upward flux Fc = 5.7 × 104 particles m−2 s−1, and as a relatively strong heat source after freeze-up, with an upward maximum sensible heat flux H = 13.1 W m−2. Over the frozen lead, however, we were unable to resolve any significant aerosol profiles. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Held, A. Orsini, D.A. Vaattovaara, P. Tjernström, M. Leck, C. |
author_facet |
Held, A. Orsini, D.A. Vaattovaara, P. Tjernström, M. Leck, C. |
author_sort |
Held, A. |
title |
Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
title_short |
Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
title_full |
Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
title_fullStr |
Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
title_full_unstemmed |
Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
title_sort |
near-surface profiles of aerosol number concentration and temperature over the arctic ocean |
publisher |
München : European Geopyhsical Union |
publishDate |
2011 |
url |
https://doi.org/10.34657/1113 https://oa.tib.eu/renate/handle/123456789/808 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Atmospheric Measurement Techniques, Volume 4, Issue 8, Page 1603-1616 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/1113 |
_version_ |
1772811903593086976 |