Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples
Methane and nitrous oxide are important greenhouse gases which show a strong increase in atmospheric mixing ratios since pre-industrial time as well as large variations during past climate changes. The understanding of their biogeochemical cycles can be improved using stable isotope analysis. Howeve...
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Online Access: | https://epic.awi.de/id/eprint/25737/ https://epic.awi.de/id/eprint/25737/1/Sapart2011AMT.pdf https://hdl.handle.net/10013/epic.38739 https://hdl.handle.net/10013/epic.38739.d001 |
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ftawi:oai:epic.awi.de:25737 2024-09-15T18:11:54+00:00 Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples Sapart, C. J. van der Veen, C. Vigano, I. Brass, M. van de Wal, R. S. W. Bock, Michael Fischer, Hubertus Sowers, T. Buizert, C. Sperlich, Peter Blunier, T. Behrens, Melanie Schmitt, Jochen Seth, B. Röckmann, T. 2011 application/pdf https://epic.awi.de/id/eprint/25737/ https://epic.awi.de/id/eprint/25737/1/Sapart2011AMT.pdf https://hdl.handle.net/10013/epic.38739 https://hdl.handle.net/10013/epic.38739.d001 unknown Copernicus Publications https://epic.awi.de/id/eprint/25737/1/Sapart2011AMT.pdf https://hdl.handle.net/10013/epic.38739.d001 Sapart, C. J. , van der Veen, C. , Vigano, I. , Brass, M. , van de Wal, R. S. W. , Bock, M. , Fischer, H. , Sowers, T. , Buizert, C. , Sperlich, P. , Blunier, T. , Behrens, M. orcid:0000-0001-9275-4333 , Schmitt, J. , Seth, B. and Röckmann, T. (2011) Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples , Atmospheric Measurement Techniques, 4 (12), pp. 2607-2618 . doi:10.5194/amt-4-2607-2011 <https://doi.org/10.5194/amt-4-2607-2011> , hdl:10013/epic.38739 EPIC3Atmospheric Measurement Techniques, Copernicus Publications, 4(12), pp. 2607-2618, ISSN: 1867-1381 Article isiRev 2011 ftawi https://doi.org/10.5194/amt-4-2607-2011 2024-06-24T04:03:41Z Methane and nitrous oxide are important greenhouse gases which show a strong increase in atmospheric mixing ratios since pre-industrial time as well as large variations during past climate changes. The understanding of their biogeochemical cycles can be improved using stable isotope analysis. However, high-precision isotope measurements on air trapped in ice cores are challenging because of the high susceptibility to contamination and fractionation. Here, we present a dry extraction system for combined CH4 and N2O stable isotope analysis from ice core air, using an ice grating device. The system allows simultaneous analysis of δD(CH4) or δ13C(CH4), together with δ15N(N2O), δ18O(N2O) and δ15N(NO+ fragment) on a single ice core sample, using two isotope mass spectrometry systems. The optimum quantity of ice for analysis is about 600 g with typical "Holocene" mixing ratios for CH4 and N2O. In this case, the reproducibility (1σ ) is 2.1‰ for δD(CH4), 0.18‰ for δ13C(CH4), 0.51‰ for δ15N(N2O), 0.69‰ for δ18O(N2O) and 1.12‰ for δ15N(NO+ fragment). For smaller amounts of ice the standard deviation increases, particularly for N2O isotopologues. For both gases, small-scale intercalibrations using air and/or ice samples have been carried out in collaboration with other institutes that are currently involved in isotope measurements of ice core air. Significant differences are shown between the calibration scales, but those offsets are consistent and can therefore be corrected for. Article in Journal/Newspaper ice core Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Atmospheric Measurement Techniques 4 12 2607 2618 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
Methane and nitrous oxide are important greenhouse gases which show a strong increase in atmospheric mixing ratios since pre-industrial time as well as large variations during past climate changes. The understanding of their biogeochemical cycles can be improved using stable isotope analysis. However, high-precision isotope measurements on air trapped in ice cores are challenging because of the high susceptibility to contamination and fractionation. Here, we present a dry extraction system for combined CH4 and N2O stable isotope analysis from ice core air, using an ice grating device. The system allows simultaneous analysis of δD(CH4) or δ13C(CH4), together with δ15N(N2O), δ18O(N2O) and δ15N(NO+ fragment) on a single ice core sample, using two isotope mass spectrometry systems. The optimum quantity of ice for analysis is about 600 g with typical "Holocene" mixing ratios for CH4 and N2O. In this case, the reproducibility (1σ ) is 2.1‰ for δD(CH4), 0.18‰ for δ13C(CH4), 0.51‰ for δ15N(N2O), 0.69‰ for δ18O(N2O) and 1.12‰ for δ15N(NO+ fragment). For smaller amounts of ice the standard deviation increases, particularly for N2O isotopologues. For both gases, small-scale intercalibrations using air and/or ice samples have been carried out in collaboration with other institutes that are currently involved in isotope measurements of ice core air. Significant differences are shown between the calibration scales, but those offsets are consistent and can therefore be corrected for. |
format |
Article in Journal/Newspaper |
author |
Sapart, C. J. van der Veen, C. Vigano, I. Brass, M. van de Wal, R. S. W. Bock, Michael Fischer, Hubertus Sowers, T. Buizert, C. Sperlich, Peter Blunier, T. Behrens, Melanie Schmitt, Jochen Seth, B. Röckmann, T. |
spellingShingle |
Sapart, C. J. van der Veen, C. Vigano, I. Brass, M. van de Wal, R. S. W. Bock, Michael Fischer, Hubertus Sowers, T. Buizert, C. Sperlich, Peter Blunier, T. Behrens, Melanie Schmitt, Jochen Seth, B. Röckmann, T. Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
author_facet |
Sapart, C. J. van der Veen, C. Vigano, I. Brass, M. van de Wal, R. S. W. Bock, Michael Fischer, Hubertus Sowers, T. Buizert, C. Sperlich, Peter Blunier, T. Behrens, Melanie Schmitt, Jochen Seth, B. Röckmann, T. |
author_sort |
Sapart, C. J. |
title |
Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
title_short |
Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
title_full |
Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
title_fullStr |
Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
title_full_unstemmed |
Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
title_sort |
simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/25737/ https://epic.awi.de/id/eprint/25737/1/Sapart2011AMT.pdf https://hdl.handle.net/10013/epic.38739 https://hdl.handle.net/10013/epic.38739.d001 |
genre |
ice core |
genre_facet |
ice core |
op_source |
EPIC3Atmospheric Measurement Techniques, Copernicus Publications, 4(12), pp. 2607-2618, ISSN: 1867-1381 |
op_relation |
https://epic.awi.de/id/eprint/25737/1/Sapart2011AMT.pdf https://hdl.handle.net/10013/epic.38739.d001 Sapart, C. J. , van der Veen, C. , Vigano, I. , Brass, M. , van de Wal, R. S. W. , Bock, M. , Fischer, H. , Sowers, T. , Buizert, C. , Sperlich, P. , Blunier, T. , Behrens, M. orcid:0000-0001-9275-4333 , Schmitt, J. , Seth, B. and Röckmann, T. (2011) Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples , Atmospheric Measurement Techniques, 4 (12), pp. 2607-2618 . doi:10.5194/amt-4-2607-2011 <https://doi.org/10.5194/amt-4-2607-2011> , hdl:10013/epic.38739 |
op_doi |
https://doi.org/10.5194/amt-4-2607-2011 |
container_title |
Atmospheric Measurement Techniques |
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4 |
container_issue |
12 |
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2607 |
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2618 |
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1810449476306862080 |