Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka)
<p>We present a compilation of 127 time series <i>δ</i><sup>13</sup>C records from <i>Cibicides wuellerstorfi</i> spanning the last deglaciation (20–6 ka) which is well-suited for reconstructing large-scale carbon cycle changes, especially for...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-08-01
|
| Series: | Climate of the Past |
| Online Access: | https://www.clim-past.net/14/1229/2018/cp-14-1229-2018.pdf |
| _version_ | 1819066464670318592 |
|---|---|
| author | C. D. Peterson C. D. Peterson L. E. Lisiecki |
| author_facet | C. D. Peterson C. D. Peterson L. E. Lisiecki |
| author_sort | C. D. Peterson |
| collection | DOAJ |
| description | <p>We present a compilation of 127 time series <i>δ</i><sup>13</sup>C records from
<i>Cibicides wuellerstorfi</i> spanning the last deglaciation
(20–6 ka) which is
well-suited for reconstructing large-scale carbon cycle changes, especially
for comparison with isotope-enabled carbon cycle models. The age models for
the <i>δ</i><sup>13</sup>C records are derived from regional planktic
radiocarbon compilations (Stern and Lisiecki 2014). The
<i>δ</i><sup>13</sup>C records were stacked in nine different regions and then
combined using volume-weighted averages to create intermediate, deep, and
global <i>δ</i><sup>13</sup>C stacks. These benthic <i>δ</i><sup>13</sup>C stacks
are used to reconstruct changes in the size of the terrestrial biosphere and
deep ocean carbon storage. The timing of change in global mean
<i>δ</i><sup>13</sup>C is interpreted to indicate terrestrial biosphere
expansion from 19–6 ka. The <i>δ</i><sup>13</sup>C gradient between the
intermediate and deep ocean, which we interpret as a proxy for deep ocean
carbon storage, matches the pattern of atmospheric CO<sub>2</sub> change
observed in ice core records. The presence of signals associated with the
terrestrial biosphere and atmospheric CO<sub>2</sub> indicates that the compiled
<i>δ</i><sup>13</sup>C records have sufficient spatial coverage and time
resolution to accurately reconstruct large-scale carbon cycle changes during
the glacial termination.</p> |
| first_indexed | 2024-12-21T16:02:47Z |
| format | Article |
| id | doaj.art-b96c3dbfeea14de2bf22cbc4f4b08bc4 |
| institution | Directory Open Access Journal |
| issn | 1814-9324 1814-9332 |
| language | English |
| last_indexed | 2024-12-21T16:02:47Z |
| publishDate | 2018-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Climate of the Past |
| spelling | doaj.art-b96c3dbfeea14de2bf22cbc4f4b08bc42022-12-21T18:57:58ZengCopernicus PublicationsClimate of the Past1814-93241814-93322018-08-01141229125210.5194/cp-14-1229-2018Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka)C. D. Peterson0C. D. Peterson1L. E. Lisiecki2Department of Earth Sciences, University of California Riverside, Riverside, California, USADepartment of Earth Science, University of California Santa Barbara, Santa Barbara, California, USADepartment of Earth Science, University of California Santa Barbara, Santa Barbara, California, USA<p>We present a compilation of 127 time series <i>δ</i><sup>13</sup>C records from <i>Cibicides wuellerstorfi</i> spanning the last deglaciation (20–6 ka) which is well-suited for reconstructing large-scale carbon cycle changes, especially for comparison with isotope-enabled carbon cycle models. The age models for the <i>δ</i><sup>13</sup>C records are derived from regional planktic radiocarbon compilations (Stern and Lisiecki 2014). The <i>δ</i><sup>13</sup>C records were stacked in nine different regions and then combined using volume-weighted averages to create intermediate, deep, and global <i>δ</i><sup>13</sup>C stacks. These benthic <i>δ</i><sup>13</sup>C stacks are used to reconstruct changes in the size of the terrestrial biosphere and deep ocean carbon storage. The timing of change in global mean <i>δ</i><sup>13</sup>C is interpreted to indicate terrestrial biosphere expansion from 19–6 ka. The <i>δ</i><sup>13</sup>C gradient between the intermediate and deep ocean, which we interpret as a proxy for deep ocean carbon storage, matches the pattern of atmospheric CO<sub>2</sub> change observed in ice core records. The presence of signals associated with the terrestrial biosphere and atmospheric CO<sub>2</sub> indicates that the compiled <i>δ</i><sup>13</sup>C records have sufficient spatial coverage and time resolution to accurately reconstruct large-scale carbon cycle changes during the glacial termination.</p>https://www.clim-past.net/14/1229/2018/cp-14-1229-2018.pdf |
| spellingShingle | C. D. Peterson C. D. Peterson L. E. Lisiecki Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka) Climate of the Past |
| title | Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka) |
| title_full | Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka) |
| title_fullStr | Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka) |
| title_full_unstemmed | Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka) |
| title_short | Deglacial carbon cycle changes observed in a compilation of 127 benthic <i>δ</i><sup>13</sup>C time series (20–6 ka) |
| title_sort | deglacial carbon cycle changes observed in a compilation of 127 benthic i δ i sup 13 sup c time series 20 6 thinsp ka |
| url | https://www.clim-past.net/14/1229/2018/cp-14-1229-2018.pdf |
| work_keys_str_mv | AT cdpeterson deglacialcarboncyclechangesobservedinacompilationof127benthicidisup13supctimeseries206thinspka AT cdpeterson deglacialcarboncyclechangesobservedinacompilationof127benthicidisup13supctimeseries206thinspka AT lelisiecki deglacialcarboncyclechangesobservedinacompilationof127benthicidisup13supctimeseries206thinspka |