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Towards understanding global variability in ocean carbon‐13
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| Zeitschriftentitel: | Global Biogeochemical Cycles |
|---|---|
| Personen und Körperschaften: | , |
| In: | Global Biogeochemical Cycles, 22, 2008, 1 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
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| Schlagwörter: |
| author_facet |
Tagliabue, Alessandro Bopp, Laurent Tagliabue, Alessandro Bopp, Laurent |
|---|---|
| author |
Tagliabue, Alessandro Bopp, Laurent |
| spellingShingle |
Tagliabue, Alessandro Bopp, Laurent Global Biogeochemical Cycles Towards understanding global variability in ocean carbon‐13 Atmospheric Science General Environmental Science Environmental Chemistry Global and Planetary Change |
| author_sort |
tagliabue, alessandro |
| spelling |
Tagliabue, Alessandro Bopp, Laurent 0886-6236 1944-9224 American Geophysical Union (AGU) Atmospheric Science General Environmental Science Environmental Chemistry Global and Planetary Change http://dx.doi.org/10.1029/2007gb003037 <jats:p>We include a prognostic parameterization of carbon‐13 into a global ocean‐biogeochemistry model to investigate the spatiotemporal variability in ocean carbon‐13 between 1860 and 2000. Carbon‐13 was included in all 10 existing carbon pools, with dynamic fractionations occurring during photosynthesis, gas exchange and carbonate chemistry. We find that ocean distributions of <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> at any point in time are controlled by the interplay between biological fractionation, gas exchange, and ocean mixing. In particular, the deep ocean <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is sensitive (by > 0.5‰) to the degree of ocean ventilation. On interannual timescales, although the variability in <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is a first order function of the atmospheric <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>CO<jats:sub>2</jats:sub> and overall carbon flux, the spatial distributions are controlled by the degree to which surface waters are exposed to the atmosphere. The <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>POC</jats:sub> is highly sensitive to the species of inorganic carbon assimilated during photosynthesis (by 10 to 17‰), as well as the intrinsic growth rate and in situ [CO<jats:sub>2</jats:sub>(aq)], suggesting that phytoplankton utilize both HCO<jats:sub>3</jats:sub><jats:sup>−</jats:sup> and CO<jats:sub>2</jats:sub>(aq). The relationship between Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> and anthropogenic carbon (C<jats:sub>ant</jats:sub>) varies by ±70% regionally and circulation and biotic effects can influence estimates of C<jats:sub>ant</jats:sub> that are based on Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub>.</jats:p> Towards understanding global variability in ocean carbon‐13 Global Biogeochemical Cycles |
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10.1029/2007gb003037 |
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| title |
Towards understanding global variability in ocean carbon‐13 |
| title_unstemmed |
Towards understanding global variability in ocean carbon‐13 |
| title_full |
Towards understanding global variability in ocean carbon‐13 |
| title_fullStr |
Towards understanding global variability in ocean carbon‐13 |
| title_full_unstemmed |
Towards understanding global variability in ocean carbon‐13 |
| title_short |
Towards understanding global variability in ocean carbon‐13 |
| title_sort |
towards understanding global variability in ocean carbon‐13 |
| topic |
Atmospheric Science General Environmental Science Environmental Chemistry Global and Planetary Change |
| url |
http://dx.doi.org/10.1029/2007gb003037 |
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2008 |
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| description |
<jats:p>We include a prognostic parameterization of carbon‐13 into a global ocean‐biogeochemistry model to investigate the spatiotemporal variability in ocean carbon‐13 between 1860 and 2000. Carbon‐13 was included in all 10 existing carbon pools, with dynamic fractionations occurring during photosynthesis, gas exchange and carbonate chemistry. We find that ocean distributions of <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> at any point in time are controlled by the interplay between biological fractionation, gas exchange, and ocean mixing. In particular, the deep ocean <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is sensitive (by > 0.5‰) to the degree of ocean ventilation. On interannual timescales, although the variability in <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is a first order function of the atmospheric <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>CO<jats:sub>2</jats:sub> and overall carbon flux, the spatial distributions are controlled by the degree to which surface waters are exposed to the atmosphere. The <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>POC</jats:sub> is highly sensitive to the species of inorganic carbon assimilated during photosynthesis (by 10 to 17‰), as well as the intrinsic growth rate and in situ [CO<jats:sub>2</jats:sub>(aq)], suggesting that phytoplankton utilize both HCO<jats:sub>3</jats:sub><jats:sup>−</jats:sup> and CO<jats:sub>2</jats:sub>(aq). The relationship between Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> and anthropogenic carbon (C<jats:sub>ant</jats:sub>) varies by ±70% regionally and circulation and biotic effects can influence estimates of C<jats:sub>ant</jats:sub> that are based on Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub>.</jats:p> |
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| author | Tagliabue, Alessandro, Bopp, Laurent |
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| description | <jats:p>We include a prognostic parameterization of carbon‐13 into a global ocean‐biogeochemistry model to investigate the spatiotemporal variability in ocean carbon‐13 between 1860 and 2000. Carbon‐13 was included in all 10 existing carbon pools, with dynamic fractionations occurring during photosynthesis, gas exchange and carbonate chemistry. We find that ocean distributions of <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> at any point in time are controlled by the interplay between biological fractionation, gas exchange, and ocean mixing. In particular, the deep ocean <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is sensitive (by > 0.5‰) to the degree of ocean ventilation. On interannual timescales, although the variability in <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is a first order function of the atmospheric <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>CO<jats:sub>2</jats:sub> and overall carbon flux, the spatial distributions are controlled by the degree to which surface waters are exposed to the atmosphere. The <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>POC</jats:sub> is highly sensitive to the species of inorganic carbon assimilated during photosynthesis (by 10 to 17‰), as well as the intrinsic growth rate and in situ [CO<jats:sub>2</jats:sub>(aq)], suggesting that phytoplankton utilize both HCO<jats:sub>3</jats:sub><jats:sup>−</jats:sup> and CO<jats:sub>2</jats:sub>(aq). The relationship between Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> and anthropogenic carbon (C<jats:sub>ant</jats:sub>) varies by ±70% regionally and circulation and biotic effects can influence estimates of C<jats:sub>ant</jats:sub> that are based on Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub>.</jats:p> |
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| spelling | Tagliabue, Alessandro Bopp, Laurent 0886-6236 1944-9224 American Geophysical Union (AGU) Atmospheric Science General Environmental Science Environmental Chemistry Global and Planetary Change http://dx.doi.org/10.1029/2007gb003037 <jats:p>We include a prognostic parameterization of carbon‐13 into a global ocean‐biogeochemistry model to investigate the spatiotemporal variability in ocean carbon‐13 between 1860 and 2000. Carbon‐13 was included in all 10 existing carbon pools, with dynamic fractionations occurring during photosynthesis, gas exchange and carbonate chemistry. We find that ocean distributions of <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> at any point in time are controlled by the interplay between biological fractionation, gas exchange, and ocean mixing. In particular, the deep ocean <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is sensitive (by > 0.5‰) to the degree of ocean ventilation. On interannual timescales, although the variability in <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> is a first order function of the atmospheric <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>CO<jats:sub>2</jats:sub> and overall carbon flux, the spatial distributions are controlled by the degree to which surface waters are exposed to the atmosphere. The <jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>POC</jats:sub> is highly sensitive to the species of inorganic carbon assimilated during photosynthesis (by 10 to 17‰), as well as the intrinsic growth rate and in situ [CO<jats:sub>2</jats:sub>(aq)], suggesting that phytoplankton utilize both HCO<jats:sub>3</jats:sub><jats:sup>−</jats:sup> and CO<jats:sub>2</jats:sub>(aq). The relationship between Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub> and anthropogenic carbon (C<jats:sub>ant</jats:sub>) varies by ±70% regionally and circulation and biotic effects can influence estimates of C<jats:sub>ant</jats:sub> that are based on Δ<jats:italic>δ</jats:italic><jats:sup>13</jats:sup>C<jats:sub>DIC</jats:sub>.</jats:p> Towards understanding global variability in ocean carbon‐13 Global Biogeochemical Cycles |
| spellingShingle | Tagliabue, Alessandro, Bopp, Laurent, Global Biogeochemical Cycles, Towards understanding global variability in ocean carbon‐13, Atmospheric Science, General Environmental Science, Environmental Chemistry, Global and Planetary Change |
| title | Towards understanding global variability in ocean carbon‐13 |
| title_full | Towards understanding global variability in ocean carbon‐13 |
| title_fullStr | Towards understanding global variability in ocean carbon‐13 |
| title_full_unstemmed | Towards understanding global variability in ocean carbon‐13 |
| title_short | Towards understanding global variability in ocean carbon‐13 |
| title_sort | towards understanding global variability in ocean carbon‐13 |
| title_unstemmed | Towards understanding global variability in ocean carbon‐13 |
| topic | Atmospheric Science, General Environmental Science, Environmental Chemistry, Global and Planetary Change |
| url | http://dx.doi.org/10.1029/2007gb003037 |