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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ftdoajarticles:oai:doaj.org/article:75e3df54b3674114a0839c4d0558931d 2023-05-15T14:51:42+02:00 Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean A. Held D. A. Orsini P. Vaattovaara M. Tjernström C. Leck 2011-08-01T00:00:00Z https://doi.org/10.5194/amt-4-1603-2011 https://doaj.org/article/75e3df54b3674114a0839c4d0558931d EN eng Copernicus Publications http://www.atmos-meas-tech.net/4/1603/2011/amt-4-1603-2011.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-4-1603-2011 1867-1381 1867-8548 https://doaj.org/article/75e3df54b3674114a0839c4d0558931d Atmospheric Measurement Techniques, Vol 4, Iss 8, Pp 1603-1616 (2011) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2011 ftdoajarticles https://doi.org/10.5194/amt-4-1603-2011 2022-12-31T02:17:51Z 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 v d = 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 F c = 5.7 × 10 4 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 Arctic Ocean Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Atmospheric Measurement Techniques 4 8 1603 1616 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
spellingShingle |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 A. Held D. A. Orsini P. Vaattovaara M. Tjernström C. Leck Near-surface profiles of aerosol number concentration and temperature over the Arctic Ocean |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
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 v d = 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 F c = 5.7 × 10 4 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 |
A. Held D. A. Orsini P. Vaattovaara M. Tjernström C. Leck |
author_facet |
A. Held D. A. Orsini P. Vaattovaara M. Tjernström C. Leck |
author_sort |
A. Held |
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 |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/amt-4-1603-2011 https://doaj.org/article/75e3df54b3674114a0839c4d0558931d |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Atmospheric Measurement Techniques, Vol 4, Iss 8, Pp 1603-1616 (2011) |
op_relation |
http://www.atmos-meas-tech.net/4/1603/2011/amt-4-1603-2011.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-4-1603-2011 1867-1381 1867-8548 https://doaj.org/article/75e3df54b3674114a0839c4d0558931d |
op_doi |
https://doi.org/10.5194/amt-4-1603-2011 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
4 |
container_issue |
8 |
container_start_page |
1603 |
op_container_end_page |
1616 |
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1766322824851488768 |