Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records
Terrestrial carbon storage is dramatically decreased during glacial periods due to cold temperatures, increased aridity, and the presence of large ice sheets on land. Most of the carbon released by the terrestrial biosphere is stored in the ocean, where the light isotopic signature of terrestrial ca...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Amer Geophysical Union
2014
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00290/40131/39115.pdf https://doi.org/10.1002/2013PA002552 https://archimer.ifremer.fr/doc/00290/40131/ |
id |
ftarchimer:oai:archimer.ifremer.fr:40131 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:40131 2023-05-15T18:25:47+02:00 Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records Peterson, Carlye D. Lisiecki, Lorraine E. Stern, Joseph V. 2014-06 application/pdf https://archimer.ifremer.fr/doc/00290/40131/39115.pdf https://doi.org/10.1002/2013PA002552 https://archimer.ifremer.fr/doc/00290/40131/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00290/40131/39115.pdf doi:10.1002/2013PA002552 https://archimer.ifremer.fr/doc/00290/40131/ 2014. American Geophysical Union. All Rights Reserved info:eu-repo/semantics/openAccess restricted use Paleoceanography (0883-8305) (Amer Geophysical Union), 2014-06 , Vol. 29 , N. 6 , P. 549-563 text Publication info:eu-repo/semantics/article 2014 ftarchimer https://doi.org/10.1002/2013PA002552 2021-09-23T20:26:50Z Terrestrial carbon storage is dramatically decreased during glacial periods due to cold temperatures, increased aridity, and the presence of large ice sheets on land. Most of the carbon released by the terrestrial biosphere is stored in the ocean, where the light isotopic signature of terrestrial carbon is observed as a 0.32-0.7 parts per thousand depletion in benthic foraminiferal delta C-13. The wide range in estimated delta C-13 change results from the use of different subsets of benthic delta C-13 data and different methods of weighting the mean delta C-13 by volume. We present a more precise estimate of glacial-interglacial delta C-13 change of marine dissolved inorganic carbon using benthic Cibicidoides spp. delta C-13 records from 480 core sites (more than 3 times as many sites as previous studies). We divide the ocean into eight regions to generate linear regressions of regional delta C-13 versus depth for the Late Holocene (0-6 ka) and Last Glacial Maximum (19-23 ka) and estimate a mean delta C-13 decrease of 0.38 +/- 0.08 parts per thousand (2 sigma) for 0.5-5km. Estimating large uncertainty ranges for delta C-13 change in the top 0.5 km, below 5 km, and in the Southern Ocean, we calculate a whole-ocean change of 0.34 +/- 0.19 parts per thousand. This implies a terrestrial carbon change that is consistent with recent vegetation model estimates of 330-694 Gt C. Additionally, we find that a well-constrained surface ocean delta C-13 change is essential for narrowing the uncertainty range of estimated whole-ocean delta C-13 change. Article in Journal/Newspaper Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Southern Ocean Paleoceanography 29 6 549 563 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Terrestrial carbon storage is dramatically decreased during glacial periods due to cold temperatures, increased aridity, and the presence of large ice sheets on land. Most of the carbon released by the terrestrial biosphere is stored in the ocean, where the light isotopic signature of terrestrial carbon is observed as a 0.32-0.7 parts per thousand depletion in benthic foraminiferal delta C-13. The wide range in estimated delta C-13 change results from the use of different subsets of benthic delta C-13 data and different methods of weighting the mean delta C-13 by volume. We present a more precise estimate of glacial-interglacial delta C-13 change of marine dissolved inorganic carbon using benthic Cibicidoides spp. delta C-13 records from 480 core sites (more than 3 times as many sites as previous studies). We divide the ocean into eight regions to generate linear regressions of regional delta C-13 versus depth for the Late Holocene (0-6 ka) and Last Glacial Maximum (19-23 ka) and estimate a mean delta C-13 decrease of 0.38 +/- 0.08 parts per thousand (2 sigma) for 0.5-5km. Estimating large uncertainty ranges for delta C-13 change in the top 0.5 km, below 5 km, and in the Southern Ocean, we calculate a whole-ocean change of 0.34 +/- 0.19 parts per thousand. This implies a terrestrial carbon change that is consistent with recent vegetation model estimates of 330-694 Gt C. Additionally, we find that a well-constrained surface ocean delta C-13 change is essential for narrowing the uncertainty range of estimated whole-ocean delta C-13 change. |
format |
Article in Journal/Newspaper |
author |
Peterson, Carlye D. Lisiecki, Lorraine E. Stern, Joseph V. |
spellingShingle |
Peterson, Carlye D. Lisiecki, Lorraine E. Stern, Joseph V. Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records |
author_facet |
Peterson, Carlye D. Lisiecki, Lorraine E. Stern, Joseph V. |
author_sort |
Peterson, Carlye D. |
title |
Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records |
title_short |
Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records |
title_full |
Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records |
title_fullStr |
Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records |
title_full_unstemmed |
Deglacial whole-ocean delta C-13 change estimated from 480 benthic foraminiferal records |
title_sort |
deglacial whole-ocean delta c-13 change estimated from 480 benthic foraminiferal records |
publisher |
Amer Geophysical Union |
publishDate |
2014 |
url |
https://archimer.ifremer.fr/doc/00290/40131/39115.pdf https://doi.org/10.1002/2013PA002552 https://archimer.ifremer.fr/doc/00290/40131/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2014-06 , Vol. 29 , N. 6 , P. 549-563 |
op_relation |
https://archimer.ifremer.fr/doc/00290/40131/39115.pdf doi:10.1002/2013PA002552 https://archimer.ifremer.fr/doc/00290/40131/ |
op_rights |
2014. American Geophysical Union. All Rights Reserved info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/2013PA002552 |
container_title |
Paleoceanography |
container_volume |
29 |
container_issue |
6 |
container_start_page |
549 |
op_container_end_page |
563 |
_version_ |
1766207432410791936 |