Calculating uncertainty for the RICE ice core continuous flow analysis water isotope record
Calculating uncertainty for the RICE ice core continuous flow analysis water isotope record
复制标题
计算 RICE 冰芯连续流分析水同位素记录的不确定性
DOI：
10.5194/amt-11-4725-2018
复制
发表时间：
2018
影响因子：
3.8
通讯作者：
A. Phillips
中科院分区：
文献类型：
--
作者：
Elizabeth D. Keller;W. Baisden;N. Bertler;B. D. Emanuelsson;Silvia;Canessa;A. Phillips
抽象的。我们描述了一个系统的方法来校准和不确定度
高分辨率连续流分析（CFA）水同位素的估算
罗斯福岛的δ2H，δ18O记录
气候演变（RICE）南极冰芯。我们的方法建立了鲁棒的
CFA δ2H和δ18O的不确定度估计
测量值，与离散样品报告的测量值相当
δ2H和δ18O分析。数据已校准
使用具有两个标准的时间加权两点线性校准
在连续融化3或4米冰芯之前和之后测量。
每个数据点的误差计算为三个
因素：Allan方差误差，在我们的平均间隔上的分散（
方差）和校准误差（均值误差）。最终平均总数
整个记录的不确定度为δ2H=0.74 ‰，δ18O=0.21 ‰。
在数据集中，这种情况各不相同，并因一系列
这些因素通常由于环境的要求而无法隔离，
多工具CFA运动。这些因素很可能同时发生
包括冰的质量，冰破裂，上游设备故障，
钻井液污染和泄漏或阀门退化。我们证明
我们记录不确定性的方法在不同时期都是有效的
系统性能参差不齐，并取得了重大成就，
高分辨率CFA水同位素测量的精度。
Abstract. We describe a systematic approach to the calibration and uncertainty
estimation of a high-resolution continuous flow analysis (CFA) water isotope
(δ2H, δ18O) record from the Roosevelt Island
Climate Evolution (RICE) Antarctic ice core. Our method establishes robust
uncertainty estimates for CFA δ2H and δ18O
measurements, comparable to those reported for discrete sample
δ2H and δ18O analysis. Data were calibrated
using a time-weighted two-point linear calibration with two standards
measured both before and after continuously melting 3 or 4 m of ice core.
The error at each data point was calculated as the quadrature sum of three
factors: Allan variance error, scatter over our averaging interval (error of
the variance) and calibration error (error of the mean). Final mean total
uncertainty for the entire record is δ2H=0.74 ‰ and δ18O=0.21 ‰.
Uncertainties vary through the data set and were exacerbated by a range of
factors, which typically could not be isolated due to the requirements of the
multi-instrument CFA campaign. These factors likely occurred in combination
and included ice quality, ice breaks, upstream equipment failure,
contamination with drill fluid and leaks or valve degradation. We demonstrate
that our methodology for documenting uncertainty was effective across periods
of uneven system performance and delivered a significant achievement in the
precision of high-resolution CFA water isotope measurements.
影响因子：
4.3
作者：
Paul Kjaer;Helle A. Fudge;Tyler J. Lee;James E. Riis;M. Winstrup;P. Vallelonga;H. Kjær;T. Fudge;James E. Lee;Marie H. Riis;R. Edwards;N. Bertler;T. Blunier;E. Brook;C. Buizert;G. Ciobanu;H. Conway;D. Dahl-Jensen;Aja Ellis;B. D. Emanuelsson;R. Hindmarsh;E. Keller;A. Kurbatov;P. Mayewski;P. Neff;Rebecca L. Pyne;M. Simonsen;A. Svensson;Andrea Tuohy;E. Waddington;Sarah D. Wheatley
通讯作者：
Paul Kjaer;Helle A. Fudge;Tyler J. Lee;James E. Riis;M. Winstrup;P. Vallelonga;H. Kjær;T. Fudge;James E. Lee;Marie H. Riis;R. Edwards;N. Bertler;T. Blunier;E. Brook;C. Buizert;G. Ciobanu;H. Conway;D. Dahl-Jensen;Aja Ellis;B. D. Emanuelsson;R. Hindmarsh;E. Keller;A. Kurbatov;P. Mayewski;P. Neff;Rebecca L. Pyne;M. Simonsen;A. Svensson;Andrea Tuohy;E. Waddington;Sarah D. Wheatley
来自南极洲罗斯海罗斯福岛的一个 83 万年前的冰芯
影响因子：
4.3
作者：
Lee, James E.;Brook, Edward J.;Bertler, Nancy A.;Buizert, Christo;Baisden, Troy;Blunier, Thomas;Ciobanu, V. Gabriela;Conway, Howard;Dahl-Jensen, Dorthe;Fudge, Tyler J.
通讯作者：
Fudge, Tyler J.
稳定同位素取证：稳定同位素分析的法证应用简介
DOI：
--
发表时间：
2010
期刊：
--
影响因子：
--
作者：
Meier-Augenstein Wolfram
通讯作者：
Meier-Augenstein Wolfram