Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories

Taku Umezawa, Carl A.M. Brenninkmeijer, Thomas Röckmann, Carina Van Der Veen, Stanley C. Tyler, Ryo Fujita, Shinji Morimoto, Shuji Aoki, Todd Sowers, Jochen Schmitt, Michael Bock, Jonas Beck, Hubertus Fischer, Sylvia E. Michel, Bruce H. Vaughn, John B. Miller, James W.C. White, Gordon Brailsford, Hinrich Schaefer, Peter SperlichWilli A. Brand, Michael Rothe, Thomas Blunier, David Lowry, Rebecca E. Fisher, Euan G. Nisbet, Andrew L. Rice, Peter Bergamaschi, Cordelia Veidt, Ingeborg Levin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report results from a worldwide interlaboratory comparison of samples among laboratories that measure (or measured) stable carbon and hydrogen isotope ratios of atmospheric CH4 (δ13C-CH4 and δD-CH4). The offsets among the laboratories are larger than the measurement reproducibility of individual laboratories. To disentangle plausible measurement offsets, we evaluated and critically assessed a large number of intercomparison results, some of which have been documented previously in the literature. The results indicate significant offsets of δ13C-CH4 and δD-CH4 measurements among data sets reported from different laboratories; the differences among laboratories at modern atmospheric CH4 level spread over ranges of 0.5 % for δ13C-CH4 and 13 % for δD-CH4. The intercomparison results summarized in this study may be of help in future attempts to harmonize δ13C-CH4 and δD-CH4 data sets from different laboratories in order to jointly incorporate them into modelling studies. However, establishing a merged data set, which includes δ13C-CH4 and δD-CH4 data from multiple laboratories with desirable compatibility, is still challenging due to differences among laboratories in instrument settings, correction methods, traceability to reference materials and long-term data management. Further efforts are needed to identify causes of the interlaboratory measurement offsets and to decrease those to move towards the best use of available δ13C-CH4 and δD-CH4 data sets.

Original languageEnglish (US)
Pages (from-to)1207-1231
Number of pages25
JournalAtmospheric Measurement Techniques
Volume11
Issue number2
DOIs
StatePublished - Mar 2 2018

Fingerprint

interlaboratory comparison
laboratory
hydrogen isotope
data management
carbon isotope
stable isotope

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Cite this

Umezawa, T., Brenninkmeijer, C. A. M., Röckmann, T., Van Der Veen, C., Tyler, S. C., Fujita, R., ... Levin, I. (2018). Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories. Atmospheric Measurement Techniques, 11(2), 1207-1231. https://doi.org/10.5194/amt-11-1207-2018
Umezawa, Taku ; Brenninkmeijer, Carl A.M. ; Röckmann, Thomas ; Van Der Veen, Carina ; Tyler, Stanley C. ; Fujita, Ryo ; Morimoto, Shinji ; Aoki, Shuji ; Sowers, Todd ; Schmitt, Jochen ; Bock, Michael ; Beck, Jonas ; Fischer, Hubertus ; Michel, Sylvia E. ; Vaughn, Bruce H. ; Miller, John B. ; White, James W.C. ; Brailsford, Gordon ; Schaefer, Hinrich ; Sperlich, Peter ; Brand, Willi A. ; Rothe, Michael ; Blunier, Thomas ; Lowry, David ; Fisher, Rebecca E. ; Nisbet, Euan G. ; Rice, Andrew L. ; Bergamaschi, Peter ; Veidt, Cordelia ; Levin, Ingeborg. / Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories. In: Atmospheric Measurement Techniques. 2018 ; Vol. 11, No. 2. pp. 1207-1231.
@article{b33dc527e6e64fd69c5ad501ba03db0c,
title = "Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories",
abstract = "We report results from a worldwide interlaboratory comparison of samples among laboratories that measure (or measured) stable carbon and hydrogen isotope ratios of atmospheric CH4 (δ13C-CH4 and δD-CH4). The offsets among the laboratories are larger than the measurement reproducibility of individual laboratories. To disentangle plausible measurement offsets, we evaluated and critically assessed a large number of intercomparison results, some of which have been documented previously in the literature. The results indicate significant offsets of δ13C-CH4 and δD-CH4 measurements among data sets reported from different laboratories; the differences among laboratories at modern atmospheric CH4 level spread over ranges of 0.5 {\%} for δ13C-CH4 and 13 {\%} for δD-CH4. The intercomparison results summarized in this study may be of help in future attempts to harmonize δ13C-CH4 and δD-CH4 data sets from different laboratories in order to jointly incorporate them into modelling studies. However, establishing a merged data set, which includes δ13C-CH4 and δD-CH4 data from multiple laboratories with desirable compatibility, is still challenging due to differences among laboratories in instrument settings, correction methods, traceability to reference materials and long-term data management. Further efforts are needed to identify causes of the interlaboratory measurement offsets and to decrease those to move towards the best use of available δ13C-CH4 and δD-CH4 data sets.",
author = "Taku Umezawa and Brenninkmeijer, {Carl A.M.} and Thomas R{\"o}ckmann and {Van Der Veen}, Carina and Tyler, {Stanley C.} and Ryo Fujita and Shinji Morimoto and Shuji Aoki and Todd Sowers and Jochen Schmitt and Michael Bock and Jonas Beck and Hubertus Fischer and Michel, {Sylvia E.} and Vaughn, {Bruce H.} and Miller, {John B.} and White, {James W.C.} and Gordon Brailsford and Hinrich Schaefer and Peter Sperlich and Brand, {Willi A.} and Michael Rothe and Thomas Blunier and David Lowry and Fisher, {Rebecca E.} and Nisbet, {Euan G.} and Rice, {Andrew L.} and Peter Bergamaschi and Cordelia Veidt and Ingeborg Levin",
year = "2018",
month = "3",
day = "2",
doi = "10.5194/amt-11-1207-2018",
language = "English (US)",
volume = "11",
pages = "1207--1231",
journal = "Atmospheric Measurement Techniques",
issn = "1867-1381",
publisher = "Copernicus Gesellschaft mbH",
number = "2",

}

Umezawa, T, Brenninkmeijer, CAM, Röckmann, T, Van Der Veen, C, Tyler, SC, Fujita, R, Morimoto, S, Aoki, S, Sowers, T, Schmitt, J, Bock, M, Beck, J, Fischer, H, Michel, SE, Vaughn, BH, Miller, JB, White, JWC, Brailsford, G, Schaefer, H, Sperlich, P, Brand, WA, Rothe, M, Blunier, T, Lowry, D, Fisher, RE, Nisbet, EG, Rice, AL, Bergamaschi, P, Veidt, C & Levin, I 2018, 'Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories', Atmospheric Measurement Techniques, vol. 11, no. 2, pp. 1207-1231. https://doi.org/10.5194/amt-11-1207-2018

Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories. / Umezawa, Taku; Brenninkmeijer, Carl A.M.; Röckmann, Thomas; Van Der Veen, Carina; Tyler, Stanley C.; Fujita, Ryo; Morimoto, Shinji; Aoki, Shuji; Sowers, Todd; Schmitt, Jochen; Bock, Michael; Beck, Jonas; Fischer, Hubertus; Michel, Sylvia E.; Vaughn, Bruce H.; Miller, John B.; White, James W.C.; Brailsford, Gordon; Schaefer, Hinrich; Sperlich, Peter; Brand, Willi A.; Rothe, Michael; Blunier, Thomas; Lowry, David; Fisher, Rebecca E.; Nisbet, Euan G.; Rice, Andrew L.; Bergamaschi, Peter; Veidt, Cordelia; Levin, Ingeborg.

In: Atmospheric Measurement Techniques, Vol. 11, No. 2, 02.03.2018, p. 1207-1231.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interlaboratory comparison of δ13C and δd measurements of atmospheric CH4 for combined use of data sets from different laboratories

AU - Umezawa, Taku

AU - Brenninkmeijer, Carl A.M.

AU - Röckmann, Thomas

AU - Van Der Veen, Carina

AU - Tyler, Stanley C.

AU - Fujita, Ryo

AU - Morimoto, Shinji

AU - Aoki, Shuji

AU - Sowers, Todd

AU - Schmitt, Jochen

AU - Bock, Michael

AU - Beck, Jonas

AU - Fischer, Hubertus

AU - Michel, Sylvia E.

AU - Vaughn, Bruce H.

AU - Miller, John B.

AU - White, James W.C.

AU - Brailsford, Gordon

AU - Schaefer, Hinrich

AU - Sperlich, Peter

AU - Brand, Willi A.

AU - Rothe, Michael

AU - Blunier, Thomas

AU - Lowry, David

AU - Fisher, Rebecca E.

AU - Nisbet, Euan G.

AU - Rice, Andrew L.

AU - Bergamaschi, Peter

AU - Veidt, Cordelia

AU - Levin, Ingeborg

PY - 2018/3/2

Y1 - 2018/3/2

N2 - We report results from a worldwide interlaboratory comparison of samples among laboratories that measure (or measured) stable carbon and hydrogen isotope ratios of atmospheric CH4 (δ13C-CH4 and δD-CH4). The offsets among the laboratories are larger than the measurement reproducibility of individual laboratories. To disentangle plausible measurement offsets, we evaluated and critically assessed a large number of intercomparison results, some of which have been documented previously in the literature. The results indicate significant offsets of δ13C-CH4 and δD-CH4 measurements among data sets reported from different laboratories; the differences among laboratories at modern atmospheric CH4 level spread over ranges of 0.5 % for δ13C-CH4 and 13 % for δD-CH4. The intercomparison results summarized in this study may be of help in future attempts to harmonize δ13C-CH4 and δD-CH4 data sets from different laboratories in order to jointly incorporate them into modelling studies. However, establishing a merged data set, which includes δ13C-CH4 and δD-CH4 data from multiple laboratories with desirable compatibility, is still challenging due to differences among laboratories in instrument settings, correction methods, traceability to reference materials and long-term data management. Further efforts are needed to identify causes of the interlaboratory measurement offsets and to decrease those to move towards the best use of available δ13C-CH4 and δD-CH4 data sets.

AB - We report results from a worldwide interlaboratory comparison of samples among laboratories that measure (or measured) stable carbon and hydrogen isotope ratios of atmospheric CH4 (δ13C-CH4 and δD-CH4). The offsets among the laboratories are larger than the measurement reproducibility of individual laboratories. To disentangle plausible measurement offsets, we evaluated and critically assessed a large number of intercomparison results, some of which have been documented previously in the literature. The results indicate significant offsets of δ13C-CH4 and δD-CH4 measurements among data sets reported from different laboratories; the differences among laboratories at modern atmospheric CH4 level spread over ranges of 0.5 % for δ13C-CH4 and 13 % for δD-CH4. The intercomparison results summarized in this study may be of help in future attempts to harmonize δ13C-CH4 and δD-CH4 data sets from different laboratories in order to jointly incorporate them into modelling studies. However, establishing a merged data set, which includes δ13C-CH4 and δD-CH4 data from multiple laboratories with desirable compatibility, is still challenging due to differences among laboratories in instrument settings, correction methods, traceability to reference materials and long-term data management. Further efforts are needed to identify causes of the interlaboratory measurement offsets and to decrease those to move towards the best use of available δ13C-CH4 and δD-CH4 data sets.

UR - http://www.scopus.com/inward/record.url?scp=85042848296&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042848296&partnerID=8YFLogxK

U2 - 10.5194/amt-11-1207-2018

DO - 10.5194/amt-11-1207-2018

M3 - Article

AN - SCOPUS:85042848296

VL - 11

SP - 1207

EP - 1231

JO - Atmospheric Measurement Techniques

JF - Atmospheric Measurement Techniques

SN - 1867-1381

IS - 2

ER -