Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka)
Abstract. We present a compilation of 127 time series δ13C records from Cibicides wuellerstorfi 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 th...
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ftcdlib:oai:escholarship.org/ark:/13030/qt37r4g8xz 2023-05-15T16:39:13+02:00 Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) Peterson, Carlye D Lisiecki, Lorraine E 1229 - 1252 2018-08-16 application/pdf https://escholarship.org/uc/item/37r4g8xz unknown eScholarship, University of California qt37r4g8xz https://escholarship.org/uc/item/37r4g8xz public CLIMATE OF THE PAST, vol 14, iss 8 Physical Geography and Environmental Geoscience Paleontology article 2018 ftcdlib 2020-03-06T23:54:53Z Abstract. We present a compilation of 127 time series δ13C records from Cibicides wuellerstorfi 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 δ13C records are derived from regional planktic radiocarbon compilations (Stern and Lisiecki, 2014). The δ13C records were stacked in nine different regions and then combined using volume-weighted averages to create intermediate, deep, and global δ13C stacks. These benthic δ13C 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 δ13C is interpreted to indicate terrestrial biosphere expansion from 19–6 ka. The δ13C gradient between the intermediate and deep ocean, which we interpret as a proxy for deep ocean carbon storage, matches the pattern of atmospheric CO2 change observed in ice core records. The presence of signals associated with the terrestrial biosphere and atmospheric CO2 indicates that the compiled δ13C records have sufficient spatial coverage and time resolution to accurately reconstruct large-scale carbon cycle changes during the glacial termination. Article in Journal/Newspaper ice core University of California: eScholarship |
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Open Polar |
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University of California: eScholarship |
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language |
unknown |
topic |
Physical Geography and Environmental Geoscience Paleontology |
spellingShingle |
Physical Geography and Environmental Geoscience Paleontology Peterson, Carlye D Lisiecki, Lorraine E Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) |
topic_facet |
Physical Geography and Environmental Geoscience Paleontology |
description |
Abstract. We present a compilation of 127 time series δ13C records from Cibicides wuellerstorfi 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 δ13C records are derived from regional planktic radiocarbon compilations (Stern and Lisiecki, 2014). The δ13C records were stacked in nine different regions and then combined using volume-weighted averages to create intermediate, deep, and global δ13C stacks. These benthic δ13C 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 δ13C is interpreted to indicate terrestrial biosphere expansion from 19–6 ka. The δ13C gradient between the intermediate and deep ocean, which we interpret as a proxy for deep ocean carbon storage, matches the pattern of atmospheric CO2 change observed in ice core records. The presence of signals associated with the terrestrial biosphere and atmospheric CO2 indicates that the compiled δ13C records have sufficient spatial coverage and time resolution to accurately reconstruct large-scale carbon cycle changes during the glacial termination. |
format |
Article in Journal/Newspaper |
author |
Peterson, Carlye D Lisiecki, Lorraine E |
author_facet |
Peterson, Carlye D Lisiecki, Lorraine E |
author_sort |
Peterson, Carlye D |
title |
Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) |
title_short |
Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) |
title_full |
Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) |
title_fullStr |
Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) |
title_full_unstemmed |
Deglacial carbon cycle is observed in a compilation of 127 benthic delta C-13 time series (20-6 ka) |
title_sort |
deglacial carbon cycle is observed in a compilation of 127 benthic delta c-13 time series (20-6 ka) |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/37r4g8xz |
op_coverage |
1229 - 1252 |
genre |
ice core |
genre_facet |
ice core |
op_source |
CLIMATE OF THE PAST, vol 14, iss 8 |
op_relation |
qt37r4g8xz https://escholarship.org/uc/item/37r4g8xz |
op_rights |
public |
_version_ |
1766029545972957184 |