Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores
Precision, accuracy, and temporal resolution are key to making full use of atmospheric trace gas records in ice cores. These aspects will become especially crucial for ice cores that aim to extend the ice core record to the last 1.5 Myr, i.e., across the Mid-Pleistocene Transition (as currently dril...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00064626 2023-05-15T13:49:22+02:00 Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores Mächler, Lars Baggenstos, Daniel Krauss, Florian Schmitt, Jochen Bereiter, Bernhard Walther, Remo Reinhard, Christoph Tuzson, Béla Emmenegger, Lukas Fischer, Hubertus 2023-01 electronic https://doi.org/10.5194/amt-16-355-2023 https://noa.gwlb.de/receive/cop_mods_00064626 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063371/amt-16-355-2023.pdf https://amt.copernicus.org/articles/16/355/2023/amt-16-355-2023.pdf eng eng Copernicus Publications Atmospheric Measurement Techniques -- http://www.bibliothek.uni-regensburg.de/ezeit/?2505596 -- http://www.atmospheric-measurement-techniques.net/ -- 1867-8548 https://doi.org/10.5194/amt-16-355-2023 https://noa.gwlb.de/receive/cop_mods_00064626 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063371/amt-16-355-2023.pdf https://amt.copernicus.org/articles/16/355/2023/amt-16-355-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/amt-16-355-2023 2023-01-30T00:13:24Z Precision, accuracy, and temporal resolution are key to making full use of atmospheric trace gas records in ice cores. These aspects will become especially crucial for ice cores that aim to extend the ice core record to the last 1.5 Myr, i.e., across the Mid-Pleistocene Transition (as currently drilled within the European project Beyond EPICA – Oldest Ice Core (BE-OIC)). The ice from this period is expected to be close to bedrock and, due to glacier flow, extremely thinned with 15 000 years of climate history contained in only 1 m of ice. Accordingly, for a century-scale resolution, the sample vertical extent must be reduced to a few centimeters containing only about 1–2 mL air STP. We present a novel combined system for the extraction and the simultaneous measurement of CO2, CH4, and N2O concentrations, as well as δ13CO2, which achieves a vertical resolution of 1–2 cm (3.5×3.5 cm cross section) with precisions of 0.4 ppm, 3 ppb, 1 ppb, and 0.04 ‰, respectively, in sublimation tests with standard gas over gas-free ice. This is accomplished by employing a directional and continuous laser-induced sublimation followed by analysis of the sample gas by a quantum cascade laser absorption spectrometer (QCLAS). Besides the low sample volume requirements and the vertical resolution capabilities, the described method holds additional advantages over previous methods, including the immunity of the highly specific QCLAS analysis to drilling fluid contamination as well as the non-destructive nature of the spectroscopic gas analysis. The combined extraction and analysis system was extensively tested by sublimating gas-free ice with introduction of a standard gas to determine the accuracy and characterize potential artifacts. Moreover, Antarctic ice samples were measured to confirm the measurement performance, covering the range of variability expected in Pleistocene ice and highlighting the vertical resolution capabilities critical for its application within BE-OIC. Article in Journal/Newspaper Antarc* Antarctic EPICA ice core Niedersächsisches Online-Archiv NOA Antarctic Atmospheric Measurement Techniques 16 2 355 372 |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Mächler, Lars Baggenstos, Daniel Krauss, Florian Schmitt, Jochen Bereiter, Bernhard Walther, Remo Reinhard, Christoph Tuzson, Béla Emmenegger, Lukas Fischer, Hubertus Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
topic_facet |
article Verlagsveröffentlichung |
description |
Precision, accuracy, and temporal resolution are key to making full use of atmospheric trace gas records in ice cores. These aspects will become especially crucial for ice cores that aim to extend the ice core record to the last 1.5 Myr, i.e., across the Mid-Pleistocene Transition (as currently drilled within the European project Beyond EPICA – Oldest Ice Core (BE-OIC)). The ice from this period is expected to be close to bedrock and, due to glacier flow, extremely thinned with 15 000 years of climate history contained in only 1 m of ice. Accordingly, for a century-scale resolution, the sample vertical extent must be reduced to a few centimeters containing only about 1–2 mL air STP. We present a novel combined system for the extraction and the simultaneous measurement of CO2, CH4, and N2O concentrations, as well as δ13CO2, which achieves a vertical resolution of 1–2 cm (3.5×3.5 cm cross section) with precisions of 0.4 ppm, 3 ppb, 1 ppb, and 0.04 ‰, respectively, in sublimation tests with standard gas over gas-free ice. This is accomplished by employing a directional and continuous laser-induced sublimation followed by analysis of the sample gas by a quantum cascade laser absorption spectrometer (QCLAS). Besides the low sample volume requirements and the vertical resolution capabilities, the described method holds additional advantages over previous methods, including the immunity of the highly specific QCLAS analysis to drilling fluid contamination as well as the non-destructive nature of the spectroscopic gas analysis. The combined extraction and analysis system was extensively tested by sublimating gas-free ice with introduction of a standard gas to determine the accuracy and characterize potential artifacts. Moreover, Antarctic ice samples were measured to confirm the measurement performance, covering the range of variability expected in Pleistocene ice and highlighting the vertical resolution capabilities critical for its application within BE-OIC. |
format |
Article in Journal/Newspaper |
author |
Mächler, Lars Baggenstos, Daniel Krauss, Florian Schmitt, Jochen Bereiter, Bernhard Walther, Remo Reinhard, Christoph Tuzson, Béla Emmenegger, Lukas Fischer, Hubertus |
author_facet |
Mächler, Lars Baggenstos, Daniel Krauss, Florian Schmitt, Jochen Bereiter, Bernhard Walther, Remo Reinhard, Christoph Tuzson, Béla Emmenegger, Lukas Fischer, Hubertus |
author_sort |
Mächler, Lars |
title |
Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
title_short |
Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
title_full |
Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
title_fullStr |
Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
title_full_unstemmed |
Laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
title_sort |
laser-induced sublimation extraction for centimeter-resolution multi-species greenhouse gas analysis on ice cores |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/amt-16-355-2023 https://noa.gwlb.de/receive/cop_mods_00064626 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063371/amt-16-355-2023.pdf https://amt.copernicus.org/articles/16/355/2023/amt-16-355-2023.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic EPICA ice core |
genre_facet |
Antarc* Antarctic EPICA ice core |
op_relation |
Atmospheric Measurement Techniques -- http://www.bibliothek.uni-regensburg.de/ezeit/?2505596 -- http://www.atmospheric-measurement-techniques.net/ -- 1867-8548 https://doi.org/10.5194/amt-16-355-2023 https://noa.gwlb.de/receive/cop_mods_00064626 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063371/amt-16-355-2023.pdf https://amt.copernicus.org/articles/16/355/2023/amt-16-355-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/amt-16-355-2023 |
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Atmospheric Measurement Techniques |
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