Testing and improving the IntCal20 calibration curve with independent records
Connecting calendar ages to radiocarbon (14C) ages, i.e. constructing a calibration curve, requires 14C samples that represent, or are closely connected to, atmospheric 14C values and that can also be independently dated. In addition to these data, there is information that can serve as independent...
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ftleedsuniv:oai:eprints.whiterose.ac.uk:167044 2023-05-15T16:28:20+02:00 Testing and improving the IntCal20 calibration curve with independent records Muscheler, R. Adolphi, F. Heaton, T.J. Bronk Ramsey, C. Svensson, A. van der Plicht, J. Reimer, P.J. 2020-08 text https://eprints.whiterose.ac.uk/167044/ https://eprints.whiterose.ac.uk/167044/1/testing_and_improving_the_intcal20_calibration_curve_with_independent_records.pdf en eng Cambridge University Press (CUP) https://eprints.whiterose.ac.uk/167044/1/testing_and_improving_the_intcal20_calibration_curve_with_independent_records.pdf Muscheler, R., Adolphi, F., Heaton, T.J. et al. (4 more authors) (2020) Testing and improving the IntCal20 calibration curve with independent records. Radiocarbon, 62 (4). pp. 1079-1094. ISSN 0033-8222 cc_by_4 CC-BY Article PeerReviewed 2020 ftleedsuniv 2023-01-30T22:33:49Z Connecting calendar ages to radiocarbon (14C) ages, i.e. constructing a calibration curve, requires 14C samples that represent, or are closely connected to, atmospheric 14C values and that can also be independently dated. In addition to these data, there is information that can serve as independent tests of the calibration curve. For example, information from ice core radionuclide data cannot be directly incorporated into the calibration curve construction as it delivers less direct information on the 14C age–calendar age relationship but it can provide tests of the quality of the calibration curve. Furthermore, ice core ages on 14C-dated volcanic eruptions provide key information on the agreement of ice core and radiocarbon time scales. Due to their scarcity such data would have little impact if directly incorporated into the calibration curve. However, these serve as important “anchor points” in time for independently testing the calibration curve and/or ice-core time scales. Here we will show that such information largely supports the new IntCal20 calibration record. Furthermore, we discuss how floating tree-ring sequences on ice-core time scales agree with the new calibration curve. For the period around 40,000 years ago we discuss unresolved differences between ice core 10Be and 14C records that are possibly related to our limited understanding of carbon cycle influences on the atmospheric 14C concentration during the last glacial period. Finally, we review the results on the time scale comparison between the Greenland ice-core time scale (GICC05) and IntCal20 that effectively allow a direct comparison of 14C-dated records with the Greenland ice core data. Article in Journal/Newspaper Greenland Greenland ice core ice core White Rose Research Online (Universities of Leeds, Sheffield & York) Greenland |
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White Rose Research Online (Universities of Leeds, Sheffield & York) |
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ftleedsuniv |
language |
English |
description |
Connecting calendar ages to radiocarbon (14C) ages, i.e. constructing a calibration curve, requires 14C samples that represent, or are closely connected to, atmospheric 14C values and that can also be independently dated. In addition to these data, there is information that can serve as independent tests of the calibration curve. For example, information from ice core radionuclide data cannot be directly incorporated into the calibration curve construction as it delivers less direct information on the 14C age–calendar age relationship but it can provide tests of the quality of the calibration curve. Furthermore, ice core ages on 14C-dated volcanic eruptions provide key information on the agreement of ice core and radiocarbon time scales. Due to their scarcity such data would have little impact if directly incorporated into the calibration curve. However, these serve as important “anchor points” in time for independently testing the calibration curve and/or ice-core time scales. Here we will show that such information largely supports the new IntCal20 calibration record. Furthermore, we discuss how floating tree-ring sequences on ice-core time scales agree with the new calibration curve. For the period around 40,000 years ago we discuss unresolved differences between ice core 10Be and 14C records that are possibly related to our limited understanding of carbon cycle influences on the atmospheric 14C concentration during the last glacial period. Finally, we review the results on the time scale comparison between the Greenland ice-core time scale (GICC05) and IntCal20 that effectively allow a direct comparison of 14C-dated records with the Greenland ice core data. |
format |
Article in Journal/Newspaper |
author |
Muscheler, R. Adolphi, F. Heaton, T.J. Bronk Ramsey, C. Svensson, A. van der Plicht, J. Reimer, P.J. |
spellingShingle |
Muscheler, R. Adolphi, F. Heaton, T.J. Bronk Ramsey, C. Svensson, A. van der Plicht, J. Reimer, P.J. Testing and improving the IntCal20 calibration curve with independent records |
author_facet |
Muscheler, R. Adolphi, F. Heaton, T.J. Bronk Ramsey, C. Svensson, A. van der Plicht, J. Reimer, P.J. |
author_sort |
Muscheler, R. |
title |
Testing and improving the IntCal20 calibration curve with independent records |
title_short |
Testing and improving the IntCal20 calibration curve with independent records |
title_full |
Testing and improving the IntCal20 calibration curve with independent records |
title_fullStr |
Testing and improving the IntCal20 calibration curve with independent records |
title_full_unstemmed |
Testing and improving the IntCal20 calibration curve with independent records |
title_sort |
testing and improving the intcal20 calibration curve with independent records |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
https://eprints.whiterose.ac.uk/167044/ https://eprints.whiterose.ac.uk/167044/1/testing_and_improving_the_intcal20_calibration_curve_with_independent_records.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core ice core |
genre_facet |
Greenland Greenland ice core ice core |
op_relation |
https://eprints.whiterose.ac.uk/167044/1/testing_and_improving_the_intcal20_calibration_curve_with_independent_records.pdf Muscheler, R., Adolphi, F., Heaton, T.J. et al. (4 more authors) (2020) Testing and improving the IntCal20 calibration curve with independent records. Radiocarbon, 62 (4). pp. 1079-1094. ISSN 0033-8222 |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766017981419094016 |