An intercomparison project on 14C from single-year tree rings

Sabrina G.K. Kudsk; Jesper Olsen; Gregory W.L. Hodgins; Mihály Molnár; Todd E. Lange; Jessica A. Nordby; A. J.Timothy Jull; Tamás Varga; Christoffer Karoff; Mads F. Knudsen

doi:10.1017/RDC.2021.75

An intercomparison project on ¹⁴C from single-year tree rings

Sabrina G.K. Kudsk^*, Jesper Olsen, Gregory W.L. Hodgins, Mihály Molnár, Todd E. Lange, Jessica A. Nordby, A. J.Timothy Jull, Tamás Varga, Christoffer Karoff, Mads F. Knudsen

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

3 Citationer (Scopus)

Abstract

A laboratory intercomparison project was carried out on 20 annually resolved late-wood samples from the Danish oak record. The project included the following three laboratories: (1) the University of Arizona AMS Laboratory, University of Arizona, USA (AA); (2) HEKAL AMS Laboratory, MTA Atomki, Hungary (DeA); and (3) Aarhus AMS Centre (AARAMS), Aarhus University, Denmark (AAR). The large majority of individual data points (96%) lie within ±2σ of the weighted mean. Further assessment of the accuracy associated with the individual laboratories showed good agreement, indicating that consistent and reliable 14C measurements well in agreement with each other are produced at the three laboratories. However, the quoted analytical uncertainties appear to be underestimated when compared to the observed variance of differences from the geometric mean of the samples. This study provides a general quality check of the single-year tree-ring 14C measurements that are included in the new calibration curve.

Originalsprog	Engelsk
Tidsskrift	Radiocarbon
Vol/bind	63
Nummer	5
Sider (fra-til)	1445-1452
Antal sider	8
ISSN	0033-8222
DOI	https://doi.org/10.1017/RDC.2021.75
Status	Udgivet - 2021

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10.1017/RDC.2021.75

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Citationsformater

@article{97a5321df1d04f88844443953f6f5cd1,

title = "An intercomparison project on 14C from single-year tree rings",

abstract = "A laboratory intercomparison project was carried out on 20 annually resolved late-wood samples from the Danish oak record. The project included the following three laboratories: (1) the University of Arizona AMS Laboratory, University of Arizona, USA (AA); (2) HEKAL AMS Laboratory, MTA Atomki, Hungary (DeA); and (3) Aarhus AMS Centre (AARAMS), Aarhus University, Denmark (AAR). The large majority of individual data points (96%) lie within ±2σ of the weighted mean. Further assessment of the accuracy associated with the individual laboratories showed good agreement, indicating that consistent and reliable 14C measurements well in agreement with each other are produced at the three laboratories. However, the quoted analytical uncertainties appear to be underestimated when compared to the observed variance of differences from the geometric mean of the samples. This study provides a general quality check of the single-year tree-ring 14C measurements that are included in the new calibration curve.",

keywords = "IntCal, intercomparison, radiocarbon dating, single-year measurement, tree ring",

author = "Kudsk, {Sabrina G.K.} and Jesper Olsen and Hodgins, {Gregory W.L.} and Mih{\'a}ly Moln{\'a}r and Lange, {Todd E.} and Nordby, {Jessica A.} and Jull, {A. J.Timothy} and Tam{\'a}s Varga and Christoffer Karoff and Knudsen, {Mads F.}",

year = "2021",

doi = "10.1017/RDC.2021.75",

language = "English",

volume = "63",

pages = "1445--1452",

journal = "Radiocarbon",

issn = "0033-8222",

publisher = "Cambridge University Press",

number = "5",

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TY - JOUR

T1 - An intercomparison project on 14C from single-year tree rings

AU - Kudsk, Sabrina G.K.

AU - Olsen, Jesper

AU - Hodgins, Gregory W.L.

AU - Molnár, Mihály

AU - Lange, Todd E.

AU - Nordby, Jessica A.

AU - Jull, A. J.Timothy

AU - Varga, Tamás

AU - Karoff, Christoffer

AU - Knudsen, Mads F.

PY - 2021

Y1 - 2021

N2 - A laboratory intercomparison project was carried out on 20 annually resolved late-wood samples from the Danish oak record. The project included the following three laboratories: (1) the University of Arizona AMS Laboratory, University of Arizona, USA (AA); (2) HEKAL AMS Laboratory, MTA Atomki, Hungary (DeA); and (3) Aarhus AMS Centre (AARAMS), Aarhus University, Denmark (AAR). The large majority of individual data points (96%) lie within ±2σ of the weighted mean. Further assessment of the accuracy associated with the individual laboratories showed good agreement, indicating that consistent and reliable 14C measurements well in agreement with each other are produced at the three laboratories. However, the quoted analytical uncertainties appear to be underestimated when compared to the observed variance of differences from the geometric mean of the samples. This study provides a general quality check of the single-year tree-ring 14C measurements that are included in the new calibration curve.

AB - A laboratory intercomparison project was carried out on 20 annually resolved late-wood samples from the Danish oak record. The project included the following three laboratories: (1) the University of Arizona AMS Laboratory, University of Arizona, USA (AA); (2) HEKAL AMS Laboratory, MTA Atomki, Hungary (DeA); and (3) Aarhus AMS Centre (AARAMS), Aarhus University, Denmark (AAR). The large majority of individual data points (96%) lie within ±2σ of the weighted mean. Further assessment of the accuracy associated with the individual laboratories showed good agreement, indicating that consistent and reliable 14C measurements well in agreement with each other are produced at the three laboratories. However, the quoted analytical uncertainties appear to be underestimated when compared to the observed variance of differences from the geometric mean of the samples. This study provides a general quality check of the single-year tree-ring 14C measurements that are included in the new calibration curve.

KW - IntCal

KW - intercomparison

KW - radiocarbon dating

KW - single-year measurement

KW - tree ring

UR - http://www.scopus.com/inward/record.url?scp=85114858830&partnerID=8YFLogxK

U2 - 10.1017/RDC.2021.75

DO - 10.1017/RDC.2021.75

M3 - Journal article

AN - SCOPUS:85114858830

SN - 0033-8222

VL - 63

SP - 1445

EP - 1452

JO - Radiocarbon

JF - Radiocarbon

IS - 5