Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014
The stable carbon isotope composition of dissolved inorganic carbon (<i>δ</i><sup>13</sup>C<sub>DIC</sub>) in seawater was measured in samples collected during June–July 2014 in the subpolar North Atlantic. Sample collection was carried out on the RRS <i>Jam...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2016-06-01
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| Series: | Earth System Science Data |
| Online Access: | http://www.earth-syst-sci-data.net/8/221/2016/essd-8-221-2016.pdf |
| _version_ | 1819293188367581184 |
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| author | M. P. Humphreys F. M. Greatrix E. Tynan E. P. Achterberg A. M. Griffiths C. H. Fry R. Garley A. McDonald A. J. Boyce |
| author_facet | M. P. Humphreys F. M. Greatrix E. Tynan E. P. Achterberg A. M. Griffiths C. H. Fry R. Garley A. McDonald A. J. Boyce |
| author_sort | M. P. Humphreys |
| collection | DOAJ |
| description | The stable carbon isotope composition of dissolved inorganic carbon (<i>δ</i><sup>13</sup>C<sub>DIC</sub>) in seawater was measured in samples collected during
June–July 2014 in the subpolar North Atlantic. Sample collection was
carried out on the RRS <i>James Clark Ross</i> cruise JR302, part of the “Radiatively Active Gases
from the North Atlantic Region and Climate Change” (RAGNARoCC) research
programme. The observed <i>δ</i><sup>13</sup>C<sub>DIC</sub> values for cruise JR302
fall in a range from −0.07 to +1.95 ‰, relative to the Vienna Pee Dee Belemnite standard.
From duplicate samples collected during the cruise, the 1<i>σ</i> precision
for the 341 results is 0.08 ‰, which is similar to our
previous work and other studies of this kind. We also performed a cross-over
analysis using nearby historical <i>δ</i><sup>13</sup>C<sub>DIC</sub> data, which
indicated that there were no significant systematic offsets between our
measurements and previously published results. We also included seawater
reference material (RM) produced by A. G. Dickson (Scripps Institution of
Oceanography, USA) in every batch of analysis, enabling us to improve upon
the calibration and quality-control procedures from a previous study. The
<i>δ</i><sup>13</sup>C<sub>DIC</sub> is consistent within each RM batch, although its
value is not certified. We report <i>δ</i><sup>13</sup>C<sub>DIC</sub> values of
1.15 ± 0.03 ‰ and 1.27 ± 0.05 ‰ for batches 141 and 144 respectively. Our JR302
<i>δ</i><sup>13</sup>C<sub>DIC</sub> data can be used – along with measurements of
other biogeochemical variables – to constrain the processes that control
DIC in the interior ocean, in particular the oceanic uptake of anthropogenic
carbon dioxide and the biological carbon pump. Our <i>δ</i><sup>13</sup>C<sub>DIC</sub>
results are available from the British Oceanographic Data Centre –
<a href="http://dx.doi.org/10.5285/22235f1a-b7f3-687f-e053-6c86abc0c8a6" target="_blank">doi:10.5285/22235f1a-b7f3-687f-e053-6c86abc0c8a6</a>. |
| first_indexed | 2024-12-24T04:06:27Z |
| format | Article |
| id | doaj.art-3f16bea4004c4cbc989fcfafc9813712 |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-12-24T04:06:27Z |
| publishDate | 2016-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-3f16bea4004c4cbc989fcfafc98137122022-12-21T17:16:10ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162016-06-018122123310.5194/essd-8-221-2016Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014M. P. Humphreys0F. M. Greatrix1E. Tynan2E. P. Achterberg3A. M. Griffiths4C. H. Fry5R. Garley6A. McDonald7A. J. Boyce8Ocean and Earth Science, University of Southampton, Southampton, UKOcean and Earth Science, University of Southampton, Southampton, UKOcean and Earth Science, University of Southampton, Southampton, UKOcean and Earth Science, University of Southampton, Southampton, UKDepartment of Earth Science and Engineering, Imperial College London, London, UKOcean and Earth Science, University of Southampton, Southampton, UKBermuda Institute of Ocean Sciences, St George's, BermudaScottish Universities Environmental Research Centre, East Kilbride, UKScottish Universities Environmental Research Centre, East Kilbride, UKThe stable carbon isotope composition of dissolved inorganic carbon (<i>δ</i><sup>13</sup>C<sub>DIC</sub>) in seawater was measured in samples collected during June–July 2014 in the subpolar North Atlantic. Sample collection was carried out on the RRS <i>James Clark Ross</i> cruise JR302, part of the “Radiatively Active Gases from the North Atlantic Region and Climate Change” (RAGNARoCC) research programme. The observed <i>δ</i><sup>13</sup>C<sub>DIC</sub> values for cruise JR302 fall in a range from −0.07 to +1.95 ‰, relative to the Vienna Pee Dee Belemnite standard. From duplicate samples collected during the cruise, the 1<i>σ</i> precision for the 341 results is 0.08 ‰, which is similar to our previous work and other studies of this kind. We also performed a cross-over analysis using nearby historical <i>δ</i><sup>13</sup>C<sub>DIC</sub> data, which indicated that there were no significant systematic offsets between our measurements and previously published results. We also included seawater reference material (RM) produced by A. G. Dickson (Scripps Institution of Oceanography, USA) in every batch of analysis, enabling us to improve upon the calibration and quality-control procedures from a previous study. The <i>δ</i><sup>13</sup>C<sub>DIC</sub> is consistent within each RM batch, although its value is not certified. We report <i>δ</i><sup>13</sup>C<sub>DIC</sub> values of 1.15 ± 0.03 ‰ and 1.27 ± 0.05 ‰ for batches 141 and 144 respectively. Our JR302 <i>δ</i><sup>13</sup>C<sub>DIC</sub> data can be used – along with measurements of other biogeochemical variables – to constrain the processes that control DIC in the interior ocean, in particular the oceanic uptake of anthropogenic carbon dioxide and the biological carbon pump. Our <i>δ</i><sup>13</sup>C<sub>DIC</sub> results are available from the British Oceanographic Data Centre – <a href="http://dx.doi.org/10.5285/22235f1a-b7f3-687f-e053-6c86abc0c8a6" target="_blank">doi:10.5285/22235f1a-b7f3-687f-e053-6c86abc0c8a6</a>.http://www.earth-syst-sci-data.net/8/221/2016/essd-8-221-2016.pdf |
| spellingShingle | M. P. Humphreys F. M. Greatrix E. Tynan E. P. Achterberg A. M. Griffiths C. H. Fry R. Garley A. McDonald A. J. Boyce Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014 Earth System Science Data |
| title | Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014 |
| title_full | Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014 |
| title_fullStr | Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014 |
| title_full_unstemmed | Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014 |
| title_short | Stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar North Atlantic Ocean in summer 2014 |
| title_sort | stable carbon isotopes of dissolved inorganic carbon for a zonal transect across the subpolar north atlantic ocean in summer 2014 |
| url | http://www.earth-syst-sci-data.net/8/221/2016/essd-8-221-2016.pdf |
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