Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP)
The concentration of radiocarbon (14C) differs between ocean and atmosphere. Radiocarbon determinations from samples which obtained their 14C in the marine environment therefore need a marine-specific calibration curve and cannot be calibrated directly against the atmospheric-based IntCal20 curve. T...
Published in: | Radiocarbon |
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Language: | English |
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Department of Geosciences, University of Arizona
2020
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Online Access: | https://oceanrep.geomar.de/id/eprint/50509/ https://oceanrep.geomar.de/id/eprint/50509/1/marine20the_marine_radiocarbon_age_calibration_curve_055000_cal_bp.pdf https://doi.org/10.1017/RDC.2020.68 |
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ftoceanrep:oai:oceanrep.geomar.de:50509 2023-05-15T16:39:25+02:00 Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) Heaton, Timothy J Köhler, Peter Butzin, Martin Bard, Edouard Reimer, Ron W Austin, William E N Bronk Ramsey, Christopher Grootes, Pieter M Hughen, Konrad A Kromer, Bernd Reimer, Paula J Adkins, Jess Burke, Andrea Cook, Mea S Olsen, Jesper Skinner, Luke C 2020 text https://oceanrep.geomar.de/id/eprint/50509/ https://oceanrep.geomar.de/id/eprint/50509/1/marine20the_marine_radiocarbon_age_calibration_curve_055000_cal_bp.pdf https://doi.org/10.1017/RDC.2020.68 en eng Department of Geosciences, University of Arizona Cambridge University Press https://oceanrep.geomar.de/id/eprint/50509/1/marine20the_marine_radiocarbon_age_calibration_curve_055000_cal_bp.pdf Heaton, T. J. , Köhler, P. , Butzin, M. , Bard, E., Reimer, R. W., Austin, W. E. N., Bronk Ramsey, C. , Grootes, P. M., Hughen, K. A. , Kromer, B., Reimer, P. J. , Adkins, J., Burke, A. , Cook, M. S., Olsen, J. and Skinner, L. C. (2020) Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP). Open Access Radiocarbon, 62 (4). pp. 779-820. DOI 10.1017/RDC.2020.68 <https://doi.org/10.1017/RDC.2020.68>. doi:10.1017/RDC.2020.68 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2020 ftoceanrep https://doi.org/10.1017/RDC.2020.68 2023-04-07T15:51:56Z The concentration of radiocarbon (14C) differs between ocean and atmosphere. Radiocarbon determinations from samples which obtained their 14C in the marine environment therefore need a marine-specific calibration curve and cannot be calibrated directly against the atmospheric-based IntCal20 curve. This paper presents Marine20, an update to the internationally agreed marine radiocarbon age calibration curve that provides a non-polar global-average marine record of radiocarbon from 0–55 cal kBP and serves as a baseline for regional oceanic variation. Marine20 is intended for calibration of marine radiocarbon samples from non-polar regions; it is not suitable for calibration in polar regions where variability in sea ice extent, ocean upwelling and air-sea gas exchange may have caused larger changes to concentrations of marine radiocarbon. The Marine20 curve is based upon 500 simulations with an ocean/atmosphere/biosphere box-model of the global carbon cycle that has been forced by posterior realizations of our Northern Hemispheric atmospheric IntCal20 14C curve and reconstructed changes in CO2 obtained from ice core data. These forcings enable us to incorporate carbon cycle dynamics and temporal changes in the atmospheric 14C level. The box-model simulations of the global-average marine radiocarbon reservoir age are similar to those of a more complex three-dimensional ocean general circulation model. However, simplicity and speed of the box model allow us to use a Monte Carlo approach to rigorously propagate the uncertainty in both the historic concentration of atmospheric 14C and other key parameters of the carbon cycle through to our final Marine20 calibration curve. This robust propagation of uncertainty is fundamental to providing reliable precision for the radiocarbon age calibration of marine based samples. We make a first step towards deconvolving the contributions of different processes to the total uncertainty; discuss the main differences of Marine20 from the previous age calibration curve Marine13; and ... Article in Journal/Newspaper ice core Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Radiocarbon 62 4 779 820 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The concentration of radiocarbon (14C) differs between ocean and atmosphere. Radiocarbon determinations from samples which obtained their 14C in the marine environment therefore need a marine-specific calibration curve and cannot be calibrated directly against the atmospheric-based IntCal20 curve. This paper presents Marine20, an update to the internationally agreed marine radiocarbon age calibration curve that provides a non-polar global-average marine record of radiocarbon from 0–55 cal kBP and serves as a baseline for regional oceanic variation. Marine20 is intended for calibration of marine radiocarbon samples from non-polar regions; it is not suitable for calibration in polar regions where variability in sea ice extent, ocean upwelling and air-sea gas exchange may have caused larger changes to concentrations of marine radiocarbon. The Marine20 curve is based upon 500 simulations with an ocean/atmosphere/biosphere box-model of the global carbon cycle that has been forced by posterior realizations of our Northern Hemispheric atmospheric IntCal20 14C curve and reconstructed changes in CO2 obtained from ice core data. These forcings enable us to incorporate carbon cycle dynamics and temporal changes in the atmospheric 14C level. The box-model simulations of the global-average marine radiocarbon reservoir age are similar to those of a more complex three-dimensional ocean general circulation model. However, simplicity and speed of the box model allow us to use a Monte Carlo approach to rigorously propagate the uncertainty in both the historic concentration of atmospheric 14C and other key parameters of the carbon cycle through to our final Marine20 calibration curve. This robust propagation of uncertainty is fundamental to providing reliable precision for the radiocarbon age calibration of marine based samples. We make a first step towards deconvolving the contributions of different processes to the total uncertainty; discuss the main differences of Marine20 from the previous age calibration curve Marine13; and ... |
format |
Article in Journal/Newspaper |
author |
Heaton, Timothy J Köhler, Peter Butzin, Martin Bard, Edouard Reimer, Ron W Austin, William E N Bronk Ramsey, Christopher Grootes, Pieter M Hughen, Konrad A Kromer, Bernd Reimer, Paula J Adkins, Jess Burke, Andrea Cook, Mea S Olsen, Jesper Skinner, Luke C |
spellingShingle |
Heaton, Timothy J Köhler, Peter Butzin, Martin Bard, Edouard Reimer, Ron W Austin, William E N Bronk Ramsey, Christopher Grootes, Pieter M Hughen, Konrad A Kromer, Bernd Reimer, Paula J Adkins, Jess Burke, Andrea Cook, Mea S Olsen, Jesper Skinner, Luke C Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) |
author_facet |
Heaton, Timothy J Köhler, Peter Butzin, Martin Bard, Edouard Reimer, Ron W Austin, William E N Bronk Ramsey, Christopher Grootes, Pieter M Hughen, Konrad A Kromer, Bernd Reimer, Paula J Adkins, Jess Burke, Andrea Cook, Mea S Olsen, Jesper Skinner, Luke C |
author_sort |
Heaton, Timothy J |
title |
Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) |
title_short |
Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) |
title_full |
Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) |
title_fullStr |
Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) |
title_full_unstemmed |
Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP) |
title_sort |
marine20—the marine radiocarbon age calibration curve (0–55,000 cal bp) |
publisher |
Department of Geosciences, University of Arizona |
publishDate |
2020 |
url |
https://oceanrep.geomar.de/id/eprint/50509/ https://oceanrep.geomar.de/id/eprint/50509/1/marine20the_marine_radiocarbon_age_calibration_curve_055000_cal_bp.pdf https://doi.org/10.1017/RDC.2020.68 |
genre |
ice core Sea ice |
genre_facet |
ice core Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/50509/1/marine20the_marine_radiocarbon_age_calibration_curve_055000_cal_bp.pdf Heaton, T. J. , Köhler, P. , Butzin, M. , Bard, E., Reimer, R. W., Austin, W. E. N., Bronk Ramsey, C. , Grootes, P. M., Hughen, K. A. , Kromer, B., Reimer, P. J. , Adkins, J., Burke, A. , Cook, M. S., Olsen, J. and Skinner, L. C. (2020) Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP). Open Access Radiocarbon, 62 (4). pp. 779-820. DOI 10.1017/RDC.2020.68 <https://doi.org/10.1017/RDC.2020.68>. doi:10.1017/RDC.2020.68 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/RDC.2020.68 |
container_title |
Radiocarbon |
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62 |
container_issue |
4 |
container_start_page |
779 |
op_container_end_page |
820 |
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1766029769194864640 |