Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic
Apparent oxygen utilisation is potentially biased by abiotic, physical processes. Using a coupled 3-D circulation-oxygen model, this potential is quantitatively estimated for a region in the eastern subtropical North Atlantic, called the Beta Triangle, where an inconsistency exists between observati...
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ftoceanrep:oai:oceanrep.geomar.de:7000 2023-05-15T17:28:48+02:00 Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic Dietze, Heiner Oschlies, Andreas 2005 text https://oceanrep.geomar.de/id/eprint/7000/ https://oceanrep.geomar.de/id/eprint/7000/3/Dietze.pdf https://doi.org/10.1007/s10236-005-0109-z en eng Springer https://oceanrep.geomar.de/id/eprint/7000/3/Dietze.pdf Dietze, H. and Oschlies, A. (2005) Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic. Ocean Dynamics, 55 (1). pp. 28-33. DOI 10.1007/s10236-005-0109-z <https://doi.org/10.1007/s10236-005-0109-z>. doi:10.1007/s10236-005-0109-z info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2005 ftoceanrep https://doi.org/10.1007/s10236-005-0109-z 2023-04-07T14:53:57Z Apparent oxygen utilisation is potentially biased by abiotic, physical processes. Using a coupled 3-D circulation-oxygen model, this potential is quantitatively estimated for a region in the eastern subtropical North Atlantic, called the Beta Triangle, where an inconsistency exists between observational estimates of high carbon export from the euphotic zone, based on oxygen utilisation rates in the thermocline (Jenkins 1982), and those of low nutrient supply to the euphotic zone (Lewis et al. 1986, 2004). Our results indicate that in the upper ocean, the Jenkins (1982) estimate is indeed biased high by approximately 10% due to abiotic processes feigning respiration, thus contributing to the apparent inconsistency. Vertical integration, however, yields an abiotic fraction of less than 3%, so the apparent observational discrepancy can not be resolved. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Ocean Dynamics 55 1 28 33 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Apparent oxygen utilisation is potentially biased by abiotic, physical processes. Using a coupled 3-D circulation-oxygen model, this potential is quantitatively estimated for a region in the eastern subtropical North Atlantic, called the Beta Triangle, where an inconsistency exists between observational estimates of high carbon export from the euphotic zone, based on oxygen utilisation rates in the thermocline (Jenkins 1982), and those of low nutrient supply to the euphotic zone (Lewis et al. 1986, 2004). Our results indicate that in the upper ocean, the Jenkins (1982) estimate is indeed biased high by approximately 10% due to abiotic processes feigning respiration, thus contributing to the apparent inconsistency. Vertical integration, however, yields an abiotic fraction of less than 3%, so the apparent observational discrepancy can not be resolved. |
format |
Article in Journal/Newspaper |
author |
Dietze, Heiner Oschlies, Andreas |
spellingShingle |
Dietze, Heiner Oschlies, Andreas Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic |
author_facet |
Dietze, Heiner Oschlies, Andreas |
author_sort |
Dietze, Heiner |
title |
Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic |
title_short |
Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic |
title_full |
Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic |
title_fullStr |
Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic |
title_full_unstemmed |
Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic |
title_sort |
modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical north atlantic |
publisher |
Springer |
publishDate |
2005 |
url |
https://oceanrep.geomar.de/id/eprint/7000/ https://oceanrep.geomar.de/id/eprint/7000/3/Dietze.pdf https://doi.org/10.1007/s10236-005-0109-z |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/7000/3/Dietze.pdf Dietze, H. and Oschlies, A. (2005) Modeling abiotic production of apparent oxygen utilisation in the oligotrophic subtropical North Atlantic. Ocean Dynamics, 55 (1). pp. 28-33. DOI 10.1007/s10236-005-0109-z <https://doi.org/10.1007/s10236-005-0109-z>. doi:10.1007/s10236-005-0109-z |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s10236-005-0109-z |
container_title |
Ocean Dynamics |
container_volume |
55 |
container_issue |
1 |
container_start_page |
28 |
op_container_end_page |
33 |
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1766121875470024704 |