Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models
Physical transport processes of carbon, alkalinity, heat, and nutrients to a large extent control the partial pressure of CO2 at the sea surface and hence the oceanic carbon uptake. Using a state-of-the-art biogeochemical model of the North Atlantic at eddy-permitting resolution we show that biases...
Published in: | Global Biogeochemical Cycles |
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Language: | English |
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AGU (American Geophysical Union)
2006
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Online Access: | https://oceanrep.geomar.de/id/eprint/6058/ https://oceanrep.geomar.de/id/eprint/6058/1/Eden_et_al-2006-Global_Biogeochemical_Cycles.pdf https://doi.org/10.1029/2005GB002521 |
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ftoceanrep:oai:oceanrep.geomar.de:6058 2023-05-15T17:27:44+02:00 Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models Eden, Carsten Oschlies, Andreas 2006 text https://oceanrep.geomar.de/id/eprint/6058/ https://oceanrep.geomar.de/id/eprint/6058/1/Eden_et_al-2006-Global_Biogeochemical_Cycles.pdf https://doi.org/10.1029/2005GB002521 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/6058/1/Eden_et_al-2006-Global_Biogeochemical_Cycles.pdf Eden, C. and Oschlies, A. (2006) Adiabatic reduction of circulation-related CO2 air-sea flux biases in North Atlantic carbon-cycle models. Open Access Global Biogeochemical Cycles, 20 (GB2008). DOI 10.1029/2005GB002521 <https://doi.org/10.1029/2005GB002521>. doi:10.1029/2005GB002521 info:eu-repo/semantics/openAccess Article PeerReviewed 2006 ftoceanrep https://doi.org/10.1029/2005GB002521 2023-04-07T14:52:11Z Physical transport processes of carbon, alkalinity, heat, and nutrients to a large extent control the partial pressure of CO2 at the sea surface and hence the oceanic carbon uptake. Using a state-of-the-art biogeochemical model of the North Atlantic at eddy-permitting resolution we show that biases in the simulated circulation generate errors in air-sea fluxes of CO2 which are still larger than those associated with the considerable uncertainties in parameterizations of the air-sea gas exchange. A semiprognostic correction method that adiabatically corrects the momentum equations while conserving water mass properties and tracers is shown to yield a more realistic description of the carbon fluxes into the North Atlantic at little additional computational cost. Owing to upper ocean flow patterns in better agreement with observations, simulated CO2 uptake in the corrected regional model is larger by 25% compared to the uncorrected model. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Global Biogeochemical Cycles 20 2 n/a n/a |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Physical transport processes of carbon, alkalinity, heat, and nutrients to a large extent control the partial pressure of CO2 at the sea surface and hence the oceanic carbon uptake. Using a state-of-the-art biogeochemical model of the North Atlantic at eddy-permitting resolution we show that biases in the simulated circulation generate errors in air-sea fluxes of CO2 which are still larger than those associated with the considerable uncertainties in parameterizations of the air-sea gas exchange. A semiprognostic correction method that adiabatically corrects the momentum equations while conserving water mass properties and tracers is shown to yield a more realistic description of the carbon fluxes into the North Atlantic at little additional computational cost. Owing to upper ocean flow patterns in better agreement with observations, simulated CO2 uptake in the corrected regional model is larger by 25% compared to the uncorrected model. |
format |
Article in Journal/Newspaper |
author |
Eden, Carsten Oschlies, Andreas |
spellingShingle |
Eden, Carsten Oschlies, Andreas Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models |
author_facet |
Eden, Carsten Oschlies, Andreas |
author_sort |
Eden, Carsten |
title |
Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models |
title_short |
Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models |
title_full |
Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models |
title_fullStr |
Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models |
title_full_unstemmed |
Adiabatic reduction of circulation-related CO 2 air-sea flux biases in North Atlantic carbon-cycle models |
title_sort |
adiabatic reduction of circulation-related co 2 air-sea flux biases in north atlantic carbon-cycle models |
publisher |
AGU (American Geophysical Union) |
publishDate |
2006 |
url |
https://oceanrep.geomar.de/id/eprint/6058/ https://oceanrep.geomar.de/id/eprint/6058/1/Eden_et_al-2006-Global_Biogeochemical_Cycles.pdf https://doi.org/10.1029/2005GB002521 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/6058/1/Eden_et_al-2006-Global_Biogeochemical_Cycles.pdf Eden, C. and Oschlies, A. (2006) Adiabatic reduction of circulation-related CO2 air-sea flux biases in North Atlantic carbon-cycle models. Open Access Global Biogeochemical Cycles, 20 (GB2008). DOI 10.1029/2005GB002521 <https://doi.org/10.1029/2005GB002521>. doi:10.1029/2005GB002521 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2005GB002521 |
container_title |
Global Biogeochemical Cycles |
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20 |
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2 |
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n/a |
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1766120013438124032 |