Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2)
peer reviewed Results are presented of export production, dissolved organic matter (DOM) and dissolved oxygen simulated by 12 global ocean models participating in the second phase of the Ocean Carbon-cycle Model Intercomparison Project. A common, simple biogeochemical model is utilized in different...
Published in: | Global Biogeochemical Cycles |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Amer Geophysical Union
2007
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Online Access: | https://orbi.uliege.be/handle/2268/39993 https://doi.org/10.1029/2006GB002857 |
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ftorbi:oai:orbi.ulg.ac.be:2268/39993 2024-04-21T08:12:17+00:00 Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) Najjar, R. G. Jin, X. Louanchi, F. Aumont, O. Caldeira, K. Doney, S. C. Dutay, J. C. Follows, M. Gruber, N. Joos, F. Lindsay, K. Maier-Reimer, E. Matear, R. J. Matsumoto, K. Monfray, P. Mouchet, Anne Orr, J. C. Plattner, G. K. Sarmiento, J. L. Schlitzer, R. Slater, R. D. Weirig, M. F. Yamanaka, Y. Yool, A. 2007 https://orbi.uliege.be/handle/2268/39993 https://doi.org/10.1029/2006GB002857 en eng Amer Geophysical Union urn:issn:0886-6236 urn:issn:1944-9224 https://orbi.uliege.be/handle/2268/39993 info:hdl:2268/39993 doi:10.1029/2006GB002857 scopus-id:2-s2.0-36749051655 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Global Biogeochemical Cycles, 21 (3) (2007) Physical chemical mathematical & earth Sciences Life sciences Aquatic sciences & oceanology Physique chimie mathématiques & sciences de la terre Sciences du vivant Sciences aquatiques & océanologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2007 ftorbi https://doi.org/10.1029/2006GB002857 2024-03-27T14:56:04Z peer reviewed Results are presented of export production, dissolved organic matter (DOM) and dissolved oxygen simulated by 12 global ocean models participating in the second phase of the Ocean Carbon-cycle Model Intercomparison Project. A common, simple biogeochemical model is utilized in different coarse-resolution ocean circulation models. The model mean (+/- 1 sigma) downward flux of organic matter across 75 m depth is 17 +/- 6 Pg C yr(-1). Model means of globally averaged particle export, the fraction of total export in dissolved form, surface semilabile dissolved organic carbon (DOC), and seasonal net outgassing (SNO) of oxygen are in good agreement with observation-based estimates, but particle export and surface DOC are too high in the tropics. There is a high sensitivity of the results to circulation, as evidenced by (1) the correlation of surface DOC and export with circulation metrics, including chlorofluorocarbon inventory and deep-ocean radiocarbon, (2) very large intermodel differences in Southern Ocean export, and (3) greater export production, fraction of export as DOM, and SNO in models with explicit mixed layer physics. However, deep-ocean oxygen, which varies widely among the models, is poorly correlated with other model indices. Cross-model means of several biogeochemical metrics show better agreement with observation-based estimates when restricted to those models that best simulate deep-ocean radiocarbon. Overall, the results emphasize the importance of physical processes in marine biogeochemical modeling and suggest that the development of circulation models can be accelerated by evaluating them with marine biogeochemical metrics. Article in Journal/Newspaper Southern Ocean University of Liège: ORBi (Open Repository and Bibliography) Global Biogeochemical Cycles 21 3 n/a n/a |
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Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Life sciences Aquatic sciences & oceanology Physique chimie mathématiques & sciences de la terre Sciences du vivant Sciences aquatiques & océanologie |
spellingShingle |
Physical chemical mathematical & earth Sciences Life sciences Aquatic sciences & oceanology Physique chimie mathématiques & sciences de la terre Sciences du vivant Sciences aquatiques & océanologie Najjar, R. G. Jin, X. Louanchi, F. Aumont, O. Caldeira, K. Doney, S. C. Dutay, J. C. Follows, M. Gruber, N. Joos, F. Lindsay, K. Maier-Reimer, E. Matear, R. J. Matsumoto, K. Monfray, P. Mouchet, Anne Orr, J. C. Plattner, G. K. Sarmiento, J. L. Schlitzer, R. Slater, R. D. Weirig, M. F. Yamanaka, Y. Yool, A. Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) |
topic_facet |
Physical chemical mathematical & earth Sciences Life sciences Aquatic sciences & oceanology Physique chimie mathématiques & sciences de la terre Sciences du vivant Sciences aquatiques & océanologie |
description |
peer reviewed Results are presented of export production, dissolved organic matter (DOM) and dissolved oxygen simulated by 12 global ocean models participating in the second phase of the Ocean Carbon-cycle Model Intercomparison Project. A common, simple biogeochemical model is utilized in different coarse-resolution ocean circulation models. The model mean (+/- 1 sigma) downward flux of organic matter across 75 m depth is 17 +/- 6 Pg C yr(-1). Model means of globally averaged particle export, the fraction of total export in dissolved form, surface semilabile dissolved organic carbon (DOC), and seasonal net outgassing (SNO) of oxygen are in good agreement with observation-based estimates, but particle export and surface DOC are too high in the tropics. There is a high sensitivity of the results to circulation, as evidenced by (1) the correlation of surface DOC and export with circulation metrics, including chlorofluorocarbon inventory and deep-ocean radiocarbon, (2) very large intermodel differences in Southern Ocean export, and (3) greater export production, fraction of export as DOM, and SNO in models with explicit mixed layer physics. However, deep-ocean oxygen, which varies widely among the models, is poorly correlated with other model indices. Cross-model means of several biogeochemical metrics show better agreement with observation-based estimates when restricted to those models that best simulate deep-ocean radiocarbon. Overall, the results emphasize the importance of physical processes in marine biogeochemical modeling and suggest that the development of circulation models can be accelerated by evaluating them with marine biogeochemical metrics. |
format |
Article in Journal/Newspaper |
author |
Najjar, R. G. Jin, X. Louanchi, F. Aumont, O. Caldeira, K. Doney, S. C. Dutay, J. C. Follows, M. Gruber, N. Joos, F. Lindsay, K. Maier-Reimer, E. Matear, R. J. Matsumoto, K. Monfray, P. Mouchet, Anne Orr, J. C. Plattner, G. K. Sarmiento, J. L. Schlitzer, R. Slater, R. D. Weirig, M. F. Yamanaka, Y. Yool, A. |
author_facet |
Najjar, R. G. Jin, X. Louanchi, F. Aumont, O. Caldeira, K. Doney, S. C. Dutay, J. C. Follows, M. Gruber, N. Joos, F. Lindsay, K. Maier-Reimer, E. Matear, R. J. Matsumoto, K. Monfray, P. Mouchet, Anne Orr, J. C. Plattner, G. K. Sarmiento, J. L. Schlitzer, R. Slater, R. D. Weirig, M. F. Yamanaka, Y. Yool, A. |
author_sort |
Najjar, R. G. |
title |
Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) |
title_short |
Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) |
title_full |
Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) |
title_fullStr |
Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) |
title_full_unstemmed |
Impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: Results from Phase II of the Ocean Carbon-cycle Model Intercomparison Project (OCMIP-2) |
title_sort |
impact of circulation on export production, dissolved organic matter, and dissolved oxygen in the ocean: results from phase ii of the ocean carbon-cycle model intercomparison project (ocmip-2) |
publisher |
Amer Geophysical Union |
publishDate |
2007 |
url |
https://orbi.uliege.be/handle/2268/39993 https://doi.org/10.1029/2006GB002857 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Global Biogeochemical Cycles, 21 (3) (2007) |
op_relation |
urn:issn:0886-6236 urn:issn:1944-9224 https://orbi.uliege.be/handle/2268/39993 info:hdl:2268/39993 doi:10.1029/2006GB002857 scopus-id:2-s2.0-36749051655 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2006GB002857 |
container_title |
Global Biogeochemical Cycles |
container_volume |
21 |
container_issue |
3 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1796932296357445632 |