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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fttibhannoverren:oai:oa.tib.eu:123456789/808 2024-09-15T17:53:25+00:00 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://oa.tib.eu/renate/handle/123456789/808 https://doi.org/10.34657/1113 eng eng München : European Geopyhsical Union DOI:https://doi.org/10.5194/amt-4-1603-2011 https://doi.org/10.34657/1113 https://oa.tib.eu/renate/handle/123456789/808 CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich ddc:550 aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux status-type:publishedVersion doc-type:Article doc-type:Text 2011 fttibhannoverren https://doi.org/10.34657/111310.5194/amt-4-1603-2011 2024-06-26T23:32:42Z 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. Article in Journal/Newspaper Arctic Ocean Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover) |
institution |
Open Polar |
collection |
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover) |
op_collection_id |
fttibhannoverren |
language |
English |
topic |
ddc:550 aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux |
spellingShingle |
ddc:550 aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux 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 |
ddc:550 aerosol composition air temperature deposition velocity eddy covariance freezing heat source marine atmosphere sensible heat flux |
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. |
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://oa.tib.eu/renate/handle/123456789/808 https://doi.org/10.34657/1113 |
genre |
Arctic Ocean |
genre_facet |
Arctic Ocean |
op_relation |
DOI:https://doi.org/10.5194/amt-4-1603-2011 https://doi.org/10.34657/1113 https://oa.tib.eu/renate/handle/123456789/808 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich |
op_doi |
https://doi.org/10.34657/111310.5194/amt-4-1603-2011 |
_version_ |
1810295505630003200 |