Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans
The dominant processes controlling the magnitude and spatial distribution of the preindustrial air-sea flux of CO are atmosphere-ocean heat exchange and the biological pump, coupled with the direct influence of ocean circulation resulting from the slow time-scale of air-sea CO gas exchange equilibra...
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:47469 2023-05-15T18:25:28+02:00 Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans Murnane, R.J. Sarmiento, J.L. Le Quéré, C. 1999-06-01 https://ueaeprints.uea.ac.uk/id/eprint/47469/ unknown Murnane, R.J., Sarmiento, J.L. and Le Quéré, C. (1999) Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans. Global Biogeochemical Cycles, 13 (2). pp. 287-305. ISSN 0886-6236 Article PeerReviewed 1999 ftuniveastangl 2023-03-23T23:32:01Z The dominant processes controlling the magnitude and spatial distribution of the preindustrial air-sea flux of CO are atmosphere-ocean heat exchange and the biological pump, coupled with the direct influence of ocean circulation resulting from the slow time-scale of air-sea CO gas exchange equilibration. The influence of the biological pump is greatest in surface outcrops of deep water, where the excess deep ocean carbon resulting from net remineralization can escape to the atmosphere. In a steady state other regions compensate for this loss by taking up CO to give a global net air-sea CO flux of zero. The predominant outcrop region is the Southern Ocean, where the loss to the atmosphere of biological pump CO is large enough to cancel the gain of CO due to cooling. The influence of the biological pump on uptake of anthropogenic CO is small: a model including biology takes up 4.9% less than a model without it. Our model does not predict the large southward interhemispheric transport of CO that has been suggested by atmospheric carbon transport constraints. Article in Journal/Newspaper Southern Ocean University of East Anglia: UEA Digital Repository Southern Ocean |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
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description |
The dominant processes controlling the magnitude and spatial distribution of the preindustrial air-sea flux of CO are atmosphere-ocean heat exchange and the biological pump, coupled with the direct influence of ocean circulation resulting from the slow time-scale of air-sea CO gas exchange equilibration. The influence of the biological pump is greatest in surface outcrops of deep water, where the excess deep ocean carbon resulting from net remineralization can escape to the atmosphere. In a steady state other regions compensate for this loss by taking up CO to give a global net air-sea CO flux of zero. The predominant outcrop region is the Southern Ocean, where the loss to the atmosphere of biological pump CO is large enough to cancel the gain of CO due to cooling. The influence of the biological pump on uptake of anthropogenic CO is small: a model including biology takes up 4.9% less than a model without it. Our model does not predict the large southward interhemispheric transport of CO that has been suggested by atmospheric carbon transport constraints. |
format |
Article in Journal/Newspaper |
author |
Murnane, R.J. Sarmiento, J.L. Le Quéré, C. |
spellingShingle |
Murnane, R.J. Sarmiento, J.L. Le Quéré, C. Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans |
author_facet |
Murnane, R.J. Sarmiento, J.L. Le Quéré, C. |
author_sort |
Murnane, R.J. |
title |
Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans |
title_short |
Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans |
title_full |
Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans |
title_fullStr |
Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans |
title_full_unstemmed |
Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans |
title_sort |
spatial distribution of air-sea co fluxes and the interhemispheric transport of carbon by the oceans |
publishDate |
1999 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/47469/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Murnane, R.J., Sarmiento, J.L. and Le Quéré, C. (1999) Spatial distribution of air-sea CO fluxes and the interhemispheric transport of carbon by the oceans. Global Biogeochemical Cycles, 13 (2). pp. 287-305. ISSN 0886-6236 |
_version_ |
1766206952208072704 |