Nitrous oxide in the North Atlantic Ocean
In order to get a comprehensive picture of the distribution of nitrous oxide (N2O) in the North Atlantic Ocean, measurements of dissolved nitrous oxide were made during three cruises in the tropical, subtropical and cold-temperate North Atlantic Ocean in October/November 2002, March/April 2004, and...
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Copernicus Publications (EGU)
2006
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ftoceanrep:oai:oceanrep.geomar.de:6664 2023-05-15T17:25:44+02:00 Nitrous oxide in the North Atlantic Ocean Walter, Sylvia Bange, Hermann W. Breitenbach, U. Wallace, Douglas W.R. 2006 text https://oceanrep.geomar.de/id/eprint/6664/ https://oceanrep.geomar.de/id/eprint/6664/1/bg-3-607-2006.pdf http://www.biogeosciences.net/3/607/2006/bg-3-607-2006.html https://doi.org/10.5194/bg-3-607-2006 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/6664/1/bg-3-607-2006.pdf Walter, S., Bange, H. W. , Breitenbach, U. and Wallace, D. W. R. (2006) Nitrous oxide in the North Atlantic Ocean. Open Access Biogeosciences (BG), 3 . pp. 607-619. DOI 10.5194/bg-3-607-2006 <https://doi.org/10.5194/bg-3-607-2006>. doi:10.5194/bg-3-607-2006 info:eu-repo/semantics/openAccess Article PeerReviewed 2006 ftoceanrep https://doi.org/10.5194/bg-3-607-2006 2023-04-07T14:53:24Z In order to get a comprehensive picture of the distribution of nitrous oxide (N2O) in the North Atlantic Ocean, measurements of dissolved nitrous oxide were made during three cruises in the tropical, subtropical and cold-temperate North Atlantic Ocean in October/November 2002, March/April 2004, and May 2002, respectively. To account for the history of atmospheric N2O, we suggest a new depth-dependent calculation of excess N2O (ΔN2O). N2O depth profiles showed supersaturation throughout the water column with a distinct increasing trend from the cold-temperate to the tropical region. Lowest nitrous oxide concentrations, near equilibrium and with an average of 11.0±1.7 nmol L−1, were found in the cold-temperate North Atlantic where the profiles showed no clear maxima. Highest values up to 37.3 nmol L−1 occurred in the tropical North Atlantic with clear maxima at approximately 400 m. A positive correlation of nitrous oxide with nitrate, as well as excess nitrous oxide with the apparent oxygen utilization (AOU), was only observed in the subtropical and tropical regions. Therefore, we conclude that the formation of nitrous oxide via nitrification occurs in the tropical region rather than in the cold-temperate region of the North Atlantic Ocean Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Biogeosciences 3 4 607 619 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
In order to get a comprehensive picture of the distribution of nitrous oxide (N2O) in the North Atlantic Ocean, measurements of dissolved nitrous oxide were made during three cruises in the tropical, subtropical and cold-temperate North Atlantic Ocean in October/November 2002, March/April 2004, and May 2002, respectively. To account for the history of atmospheric N2O, we suggest a new depth-dependent calculation of excess N2O (ΔN2O). N2O depth profiles showed supersaturation throughout the water column with a distinct increasing trend from the cold-temperate to the tropical region. Lowest nitrous oxide concentrations, near equilibrium and with an average of 11.0±1.7 nmol L−1, were found in the cold-temperate North Atlantic where the profiles showed no clear maxima. Highest values up to 37.3 nmol L−1 occurred in the tropical North Atlantic with clear maxima at approximately 400 m. A positive correlation of nitrous oxide with nitrate, as well as excess nitrous oxide with the apparent oxygen utilization (AOU), was only observed in the subtropical and tropical regions. Therefore, we conclude that the formation of nitrous oxide via nitrification occurs in the tropical region rather than in the cold-temperate region of the North Atlantic Ocean |
format |
Article in Journal/Newspaper |
author |
Walter, Sylvia Bange, Hermann W. Breitenbach, U. Wallace, Douglas W.R. |
spellingShingle |
Walter, Sylvia Bange, Hermann W. Breitenbach, U. Wallace, Douglas W.R. Nitrous oxide in the North Atlantic Ocean |
author_facet |
Walter, Sylvia Bange, Hermann W. Breitenbach, U. Wallace, Douglas W.R. |
author_sort |
Walter, Sylvia |
title |
Nitrous oxide in the North Atlantic Ocean |
title_short |
Nitrous oxide in the North Atlantic Ocean |
title_full |
Nitrous oxide in the North Atlantic Ocean |
title_fullStr |
Nitrous oxide in the North Atlantic Ocean |
title_full_unstemmed |
Nitrous oxide in the North Atlantic Ocean |
title_sort |
nitrous oxide in the north atlantic ocean |
publisher |
Copernicus Publications (EGU) |
publishDate |
2006 |
url |
https://oceanrep.geomar.de/id/eprint/6664/ https://oceanrep.geomar.de/id/eprint/6664/1/bg-3-607-2006.pdf http://www.biogeosciences.net/3/607/2006/bg-3-607-2006.html https://doi.org/10.5194/bg-3-607-2006 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/6664/1/bg-3-607-2006.pdf Walter, S., Bange, H. W. , Breitenbach, U. and Wallace, D. W. R. (2006) Nitrous oxide in the North Atlantic Ocean. Open Access Biogeosciences (BG), 3 . pp. 607-619. DOI 10.5194/bg-3-607-2006 <https://doi.org/10.5194/bg-3-607-2006>. doi:10.5194/bg-3-607-2006 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-3-607-2006 |
container_title |
Biogeosciences |
container_volume |
3 |
container_issue |
4 |
container_start_page |
607 |
op_container_end_page |
619 |
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1766117217257127936 |