An improved method for delta 15 N measurements in ice cores
International audience The use of isotopic ratios of nitrogen gas (? 15 N) trapped in ice cores as a paleothermometer to characterise abrupt climate changes is becoming a widespread technique. The versatility of the technique could be enhanced, for instance in quantifying small temperature changes d...
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ftccsdartic:oai:HAL:hal-00298207v1 2024-02-04T09:55:25+01:00 An improved method for delta 15 N measurements in ice cores Mani, F. S. Dennis, Paul Sturges, W. T. Mulvaney, R. Leuenberger, M. School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) 2008-02-08 https://hal.science/hal-00298207 https://hal.science/hal-00298207/document https://hal.science/hal-00298207/file/cpd-4-149-2008.pdf en eng HAL CCSD European Geosciences Union (EGU) hal-00298207 https://hal.science/hal-00298207 https://hal.science/hal-00298207/document https://hal.science/hal-00298207/file/cpd-4-149-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.science/hal-00298207 Climate of the Past Discussions, 2008, 4 (1), pp.149-171 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2024-01-06T23:35:38Z International audience The use of isotopic ratios of nitrogen gas (? 15 N) trapped in ice cores as a paleothermometer to characterise abrupt climate changes is becoming a widespread technique. The versatility of the technique could be enhanced, for instance in quantifying small temperature changes during the last glacial period in Antarctic ice cores, by using high precision methods. In this paper, we outline a method for measuring ? 15 N to a precision of 0.006\permil (1?, n=9) from replicate ice core samples. The high precision results from removing oxygen, carbon dioxide and water vapour from the air extracted from ice cores. The advantage of the technique is that it does not involve correction for isobaric interference due to CO + ions. We also highlight the importance of oxygen removal from the sample, and how it influences ? 15 N measurements. The results show that a small amount of oxygen in the sample can be detrimental to achieving an optimum precision in ? 15 N measurements of atmospheric nitrogen trapped ice core samples. Article in Journal/Newspaper Antarc* Antarctic ice core Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Mani, F. S. Dennis, Paul Sturges, W. T. Mulvaney, R. Leuenberger, M. An improved method for delta 15 N measurements in ice cores |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The use of isotopic ratios of nitrogen gas (? 15 N) trapped in ice cores as a paleothermometer to characterise abrupt climate changes is becoming a widespread technique. The versatility of the technique could be enhanced, for instance in quantifying small temperature changes during the last glacial period in Antarctic ice cores, by using high precision methods. In this paper, we outline a method for measuring ? 15 N to a precision of 0.006\permil (1?, n=9) from replicate ice core samples. The high precision results from removing oxygen, carbon dioxide and water vapour from the air extracted from ice cores. The advantage of the technique is that it does not involve correction for isobaric interference due to CO + ions. We also highlight the importance of oxygen removal from the sample, and how it influences ? 15 N measurements. The results show that a small amount of oxygen in the sample can be detrimental to achieving an optimum precision in ? 15 N measurements of atmospheric nitrogen trapped ice core samples. |
author2 |
School of Environmental Sciences Norwich University of East Anglia Norwich (UEA) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Climate and Environmental Physics Bern (CEP) Physikalisches Institut Bern Universität Bern / University of Bern (UNIBE)-Universität Bern / University of Bern (UNIBE) |
format |
Article in Journal/Newspaper |
author |
Mani, F. S. Dennis, Paul Sturges, W. T. Mulvaney, R. Leuenberger, M. |
author_facet |
Mani, F. S. Dennis, Paul Sturges, W. T. Mulvaney, R. Leuenberger, M. |
author_sort |
Mani, F. S. |
title |
An improved method for delta 15 N measurements in ice cores |
title_short |
An improved method for delta 15 N measurements in ice cores |
title_full |
An improved method for delta 15 N measurements in ice cores |
title_fullStr |
An improved method for delta 15 N measurements in ice cores |
title_full_unstemmed |
An improved method for delta 15 N measurements in ice cores |
title_sort |
improved method for delta 15 n measurements in ice cores |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00298207 https://hal.science/hal-00298207/document https://hal.science/hal-00298207/file/cpd-4-149-2008.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_source |
ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.science/hal-00298207 Climate of the Past Discussions, 2008, 4 (1), pp.149-171 |
op_relation |
hal-00298207 https://hal.science/hal-00298207 https://hal.science/hal-00298207/document https://hal.science/hal-00298207/file/cpd-4-149-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1789959400083947520 |