Parameterizing air-sea gas transfer velocity with dissipation
The air-sea gas transfer velocity k is frequently estimated as an empirical function of wind speed. However, it is widely recognized that k depends on processes other than wind speed alone. The small-eddy model, which describes periodic events of small eddies disturbing the sea surface with water fr...
Published in: | Journal of Geophysical Research: Oceans |
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ftoslouniv:oai:www.duo.uio.no:10852/62373 2023-05-15T17:34:06+02:00 Parameterizing air-sea gas transfer velocity with dissipation Esters, Leonie Landwher, Sebastian Sutherland, Graigory John Bell, Tom G. Christensen, Kai Håkon Saltzman, Eric S. Miller, Scott D. Ward, Brian 2017-05-29T09:41:44Z http://hdl.handle.net/10852/62373 http://urn.nb.no/URN:NBN:no-64955 https://doi.org/10.1002/2016JC012088 EN eng American Geophysical Union (AGU) NFR/233901 (Experiments on waves in oil and ice) NFR/244262 (RETROSPECT) http://urn.nb.no/URN:NBN:no-64955 Esters, Leonie Landwher, Sebastian Sutherland, Graigory John Bell, Tom G. Christensen, Kai Håkon Saltzman, Eric S. Miller, Scott D. Ward, Brian . Parameterizing air-sea gas transfer velocity with dissipation. Journal of Geophysical Research - Oceans. 2017, 122(4), 3041-3056 http://hdl.handle.net/10852/62373 1472425 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Oceans&rft.volume=122&rft.spage=3041&rft.date=2017 Journal of Geophysical Research - Oceans 122 4 3041 3056 http://dx.doi.org/10.1002/2016JC012088 URN:NBN:no-64955 Fulltext https://www.duo.uio.no/bitstream/handle/10852/62373/1/jgrc22216.pdf 2169-9275 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2017 ftoslouniv https://doi.org/10.1002/2016JC012088 2020-06-21T08:51:43Z The air-sea gas transfer velocity k is frequently estimated as an empirical function of wind speed. However, it is widely recognized that k depends on processes other than wind speed alone. The small-eddy model, which describes periodic events of small eddies disturbing the sea surface with water from below, suggests a direct relation between k and the dissipation rate of turbulent kinetic energy at the air-sea interface. This relation has been proven both in laboratories and in the field in various freshwater and coastal environments, but to date has not been verified in open ocean conditions. Here, concurrent North Atlantic field observations of and eddy covariance measurements of DMS and CO2 air-sea gas flux are presented. Using measurements, we compare the small-eddy model at various depths to previously published observations. Extrapolating the measured profiles to the thickness of the viscous sublayer allows us to formulate a function of k that depends solely on the water side friction velocity uw , which can be inferred from direct eddy covariance measurements of the air-side friction velocity ua . These field observations are generally consistent with the theoretical small-eddy model. Utilizing a variable Schmidt number exponent in the model, rather than a constant value of 1 2 yields improved agreement between model and observations. This research was originally published in Journal of Geophysical Research: Oceans. © 2017 Wiley Article in Journal/Newspaper North Atlantic Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Journal of Geophysical Research: Oceans 122 4 3041 3056 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
The air-sea gas transfer velocity k is frequently estimated as an empirical function of wind speed. However, it is widely recognized that k depends on processes other than wind speed alone. The small-eddy model, which describes periodic events of small eddies disturbing the sea surface with water from below, suggests a direct relation between k and the dissipation rate of turbulent kinetic energy at the air-sea interface. This relation has been proven both in laboratories and in the field in various freshwater and coastal environments, but to date has not been verified in open ocean conditions. Here, concurrent North Atlantic field observations of and eddy covariance measurements of DMS and CO2 air-sea gas flux are presented. Using measurements, we compare the small-eddy model at various depths to previously published observations. Extrapolating the measured profiles to the thickness of the viscous sublayer allows us to formulate a function of k that depends solely on the water side friction velocity uw , which can be inferred from direct eddy covariance measurements of the air-side friction velocity ua . These field observations are generally consistent with the theoretical small-eddy model. Utilizing a variable Schmidt number exponent in the model, rather than a constant value of 1 2 yields improved agreement between model and observations. This research was originally published in Journal of Geophysical Research: Oceans. © 2017 Wiley |
format |
Article in Journal/Newspaper |
author |
Esters, Leonie Landwher, Sebastian Sutherland, Graigory John Bell, Tom G. Christensen, Kai Håkon Saltzman, Eric S. Miller, Scott D. Ward, Brian |
spellingShingle |
Esters, Leonie Landwher, Sebastian Sutherland, Graigory John Bell, Tom G. Christensen, Kai Håkon Saltzman, Eric S. Miller, Scott D. Ward, Brian Parameterizing air-sea gas transfer velocity with dissipation |
author_facet |
Esters, Leonie Landwher, Sebastian Sutherland, Graigory John Bell, Tom G. Christensen, Kai Håkon Saltzman, Eric S. Miller, Scott D. Ward, Brian |
author_sort |
Esters, Leonie |
title |
Parameterizing air-sea gas transfer velocity with dissipation |
title_short |
Parameterizing air-sea gas transfer velocity with dissipation |
title_full |
Parameterizing air-sea gas transfer velocity with dissipation |
title_fullStr |
Parameterizing air-sea gas transfer velocity with dissipation |
title_full_unstemmed |
Parameterizing air-sea gas transfer velocity with dissipation |
title_sort |
parameterizing air-sea gas transfer velocity with dissipation |
publisher |
American Geophysical Union (AGU) |
publishDate |
2017 |
url |
http://hdl.handle.net/10852/62373 http://urn.nb.no/URN:NBN:no-64955 https://doi.org/10.1002/2016JC012088 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
2169-9275 |
op_relation |
NFR/233901 (Experiments on waves in oil and ice) NFR/244262 (RETROSPECT) http://urn.nb.no/URN:NBN:no-64955 Esters, Leonie Landwher, Sebastian Sutherland, Graigory John Bell, Tom G. Christensen, Kai Håkon Saltzman, Eric S. Miller, Scott D. Ward, Brian . Parameterizing air-sea gas transfer velocity with dissipation. Journal of Geophysical Research - Oceans. 2017, 122(4), 3041-3056 http://hdl.handle.net/10852/62373 1472425 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Geophysical Research - Oceans&rft.volume=122&rft.spage=3041&rft.date=2017 Journal of Geophysical Research - Oceans 122 4 3041 3056 http://dx.doi.org/10.1002/2016JC012088 URN:NBN:no-64955 Fulltext https://www.duo.uio.no/bitstream/handle/10852/62373/1/jgrc22216.pdf |
op_doi |
https://doi.org/10.1002/2016JC012088 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
4 |
container_start_page |
3041 |
op_container_end_page |
3056 |
_version_ |
1766132819087589376 |