Tree rings and ice cores reveal C-14 calibration uncertainties during the Younger Dryas
Muscheler, Raimund LU
; Kromer, B
; Björck, Svante
LU
; Svensson, A
; Friedrich, M
; Kaiser, K F
and Southon, J
(2008)
In Nature Geoscience
1(4).
p.263-267
- Abstract
- The Younger Dryas interval during the Last Glacial Termination was an abrupt return to glacial-like conditions punctuating the transition to a warmer, interglacial climate. Despite recent advances in the layer counting of ice-core records of the termination, the timing and length of the Younger Dryas remain controversial. Also, a steep rise in the concentration of atmospheric radiocarbon at the onset of the interval, recorded primarily in the Cariaco Basin, has been difficult to reconcile with simulations of the Younger Dryas carbon cycle. Here we discuss a radiocarbon chronology from a tree-ring record covering the Late Glacial period that has not been absolutely dated. We correlate the chronology to ice-core timescales using the common... (More)
- The Younger Dryas interval during the Last Glacial Termination was an abrupt return to glacial-like conditions punctuating the transition to a warmer, interglacial climate. Despite recent advances in the layer counting of ice-core records of the termination, the timing and length of the Younger Dryas remain controversial. Also, a steep rise in the concentration of atmospheric radiocarbon at the onset of the interval, recorded primarily in the Cariaco Basin, has been difficult to reconcile with simulations of the Younger Dryas carbon cycle. Here we discuss a radiocarbon chronology from a tree-ring record covering the Late Glacial period that has not been absolutely dated. We correlate the chronology to ice-core timescales using the common cosmic production signal in tree-ring C-14 and ice-core Be-10 concentrations. The results of this correlation suggest that the Cariaco record may be biased by changes in the concentration of radiocarbon in the upper ocean during the early phase of the Younger Dryas climate reversal in the Cariaco basin. This bias in the marine record may also affect the accuracy of a widely used radiocarbon calibration curve over this interval. Our tree-ring-based radiocarbon record is easily reconciled with simulated production rates and carbon-cycle changes associated with reduced ocean ventilation during the Younger Dryas. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1201176
- author
- Muscheler, Raimund
LU
; Kromer, B
; Björck, Svante
LU
; Svensson, A
; Friedrich, M
; Kaiser, K F
and Southon, J
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nature Geoscience
- volume
- 1
- issue
- 4
- pages
- 263 - 267
- publisher
- Nature Publishing Group
- external identifiers
-
- wos:000256433500022
- scopus:55249092394
- ISSN
- 1752-0908
- DOI
- 10.1038/ngeo128
- language
- English
- LU publication?
- yes
- id
- 6f6717f1-d029-4b30-a12a-28f51f6f2554 (old id 1201176)
- date added to LUP
- 2016-04-01 11:57:58
- date last changed
- 2022-03-28 18:17:38
@article{6f6717f1-d029-4b30-a12a-28f51f6f2554,
abstract = {{The Younger Dryas interval during the Last Glacial Termination was an abrupt return to glacial-like conditions punctuating the transition to a warmer, interglacial climate. Despite recent advances in the layer counting of ice-core records of the termination, the timing and length of the Younger Dryas remain controversial. Also, a steep rise in the concentration of atmospheric radiocarbon at the onset of the interval, recorded primarily in the Cariaco Basin, has been difficult to reconcile with simulations of the Younger Dryas carbon cycle. Here we discuss a radiocarbon chronology from a tree-ring record covering the Late Glacial period that has not been absolutely dated. We correlate the chronology to ice-core timescales using the common cosmic production signal in tree-ring C-14 and ice-core Be-10 concentrations. The results of this correlation suggest that the Cariaco record may be biased by changes in the concentration of radiocarbon in the upper ocean during the early phase of the Younger Dryas climate reversal in the Cariaco basin. This bias in the marine record may also affect the accuracy of a widely used radiocarbon calibration curve over this interval. Our tree-ring-based radiocarbon record is easily reconciled with simulated production rates and carbon-cycle changes associated with reduced ocean ventilation during the Younger Dryas.}},
author = {{Muscheler, Raimund and Kromer, B and Björck, Svante and Svensson, A and Friedrich, M and Kaiser, K F and Southon, J}},
issn = {{1752-0908}},
language = {{eng}},
number = {{4}},
pages = {{263--267}},
publisher = {{Nature Publishing Group}},
series = {{Nature Geoscience}},
title = {{Tree rings and ice cores reveal C-14 calibration uncertainties during the Younger Dryas}},
url = {{http://dx.doi.org/10.1038/ngeo128}},
doi = {{10.1038/ngeo128}},
volume = {{1}},
year = {{2008}},
}