The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source
We have performed high-precision measurements of the 18O and position dependent 15N isotopic composition of N2O from Antarctic firn air samples. By comparing these data to simulations carried out with a firn air diffusion model, we have reconstructed the temporal evolution of the N2O isotope signatu...
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2003
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00049445 2023-05-15T13:54:47+02:00 The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source Röckmann, T. Kaiser, J. Brenninkmeijer, C. A. M. 2003-03 electronic https://doi.org/10.5194/acp-3-315-2003 https://noa.gwlb.de/receive/cop_mods_00049445 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049065/acp-3-315-2003.pdf https://acp.copernicus.org/articles/3/315/2003/acp-3-315-2003.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-3-315-2003 https://noa.gwlb.de/receive/cop_mods_00049445 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049065/acp-3-315-2003.pdf https://acp.copernicus.org/articles/3/315/2003/acp-3-315-2003.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2003 ftnonlinearchiv https://doi.org/10.5194/acp-3-315-2003 2022-02-08T22:37:25Z We have performed high-precision measurements of the 18O and position dependent 15N isotopic composition of N2O from Antarctic firn air samples. By comparing these data to simulations carried out with a firn air diffusion model, we have reconstructed the temporal evolution of the N2O isotope signatures since pre-industrial times. The heavy isotope content of atmospheric N2O is presently decreasing for all signatures at rates of about -0.038 %o yr -1 for 1d15N, -0.046 %o yr -1 for 2d 15N and -0.025 %o yr -1 for d18O. The total decrease since pre-industrial times is estimated to be about -1.8%o for 1d15N at both positions and -2.2%o for 2d15N. Isotope budget calculations using these trends and recent stratospheric measurements allow to isotopically characterize the present and the pre-industrial global average N2O source, as well as the additional N2O emissions that have caused the global N2O increase since pre-industrial times. The increased fluxes from the depleted surface sources alone are insufficient to explain the inferred temporal isotope changes. In addition, the global average N2O source signature is calculated to be significantly depleted today relative to the pre-industrial value, in agreement with recent indications from soil emission measurements. Article in Journal/Newspaper Antarc* Antarctic Niedersächsisches Online-Archiv NOA Antarctic Atmospheric Chemistry and Physics 3 2 315 323 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Röckmann, T. Kaiser, J. Brenninkmeijer, C. A. M. The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source |
topic_facet |
article Verlagsveröffentlichung |
description |
We have performed high-precision measurements of the 18O and position dependent 15N isotopic composition of N2O from Antarctic firn air samples. By comparing these data to simulations carried out with a firn air diffusion model, we have reconstructed the temporal evolution of the N2O isotope signatures since pre-industrial times. The heavy isotope content of atmospheric N2O is presently decreasing for all signatures at rates of about -0.038 %o yr -1 for 1d15N, -0.046 %o yr -1 for 2d 15N and -0.025 %o yr -1 for d18O. The total decrease since pre-industrial times is estimated to be about -1.8%o for 1d15N at both positions and -2.2%o for 2d15N. Isotope budget calculations using these trends and recent stratospheric measurements allow to isotopically characterize the present and the pre-industrial global average N2O source, as well as the additional N2O emissions that have caused the global N2O increase since pre-industrial times. The increased fluxes from the depleted surface sources alone are insufficient to explain the inferred temporal isotope changes. In addition, the global average N2O source signature is calculated to be significantly depleted today relative to the pre-industrial value, in agreement with recent indications from soil emission measurements. |
format |
Article in Journal/Newspaper |
author |
Röckmann, T. Kaiser, J. Brenninkmeijer, C. A. M. |
author_facet |
Röckmann, T. Kaiser, J. Brenninkmeijer, C. A. M. |
author_sort |
Röckmann, T. |
title |
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source |
title_short |
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source |
title_full |
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source |
title_fullStr |
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source |
title_full_unstemmed |
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source |
title_sort |
isotopic fingerprint of the pre-industrial and the anthropogenic n2o source |
publisher |
Copernicus Publications |
publishDate |
2003 |
url |
https://doi.org/10.5194/acp-3-315-2003 https://noa.gwlb.de/receive/cop_mods_00049445 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049065/acp-3-315-2003.pdf https://acp.copernicus.org/articles/3/315/2003/acp-3-315-2003.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-3-315-2003 https://noa.gwlb.de/receive/cop_mods_00049445 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049065/acp-3-315-2003.pdf https://acp.copernicus.org/articles/3/315/2003/acp-3-315-2003.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-3-315-2003 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
3 |
container_issue |
2 |
container_start_page |
315 |
op_container_end_page |
323 |
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1766260892038594560 |