High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production
International audience We present high-resolution measurements of carbon monoxide (CO) concentrations from a shallow ice core of the North Greenland Eemian Ice Drilling project (NEEM-2011-S1). An optical-feedback cavity-enhanced absorption spectrometer (OF-CEAS) coupled to a continuous melter system...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2014
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Subjects: | |
Online Access: | https://hal.science/hal-01109636 https://hal.science/hal-01109636/document https://hal.science/hal-01109636/file/cp-10-987-2014.pdf https://doi.org/10.5194/cp-10-987-2014 |
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Université Grenoble Alpes: HAL |
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English |
topic |
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] |
spellingShingle |
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] Faïn, Xavier Chappellaz, Jérôme Rhodes, Rachael, H Stowasser, Christopher Blunier, Thomas Mcconnell, Joe, R Brook, Edward, J Preunkert, Susanne Legrand, Michel Debois, Thibault Romanini, Daniele High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production |
topic_facet |
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] |
description |
International audience We present high-resolution measurements of carbon monoxide (CO) concentrations from a shallow ice core of the North Greenland Eemian Ice Drilling project (NEEM-2011-S1). An optical-feedback cavity-enhanced absorption spectrometer (OF-CEAS) coupled to a continuous melter system performed continuous, online analysis during a four-week measurement campaign. This analytical setup generated stable measurements of CO concentrations with an external precision of 7.8 ppbv (1σ), based on repeated analyses of equivalent ice core sections. However, this first application of this measurement technique suffered from a poorly constrained procedural blank of 48 ± 25 ppbv and poor accuracy because an absolute calibration was not possible. The NEEM-2011-S1 CO record spans 1800 yr and the long-term trends within the most recent section of this record (i.e., post 1700 AD) resemble the existing discrete CO measurements from the Eurocore ice core. However, the CO concentration is highly variable (75–1327 ppbv range) throughout the ice core with high frequency (annual scale), high amplitude spikes characterizing the record. These CO signals are too abrupt and rapid to reflect atmospheric variability and their prevalence largely prevents interpretation of the record in terms of atmospheric CO variation. The abrupt CO spikes are likely the result of in situ production occurring within the ice itself, although the unlikely possibility of CO production driven by non-photolytic, fast kinetic processes within the continuous melter system cannot be excluded. We observe that 68% of the CO spikes are observed in ice layers enriched with pyrogenic aerosols. Such aerosols, originating from boreal biomass burning emissions, contain organic compounds, which may be oxidized or photodissociated to produce CO within the ice. However, the NEEM-2011-S1 record displays an increase of ~0.05 ppbv yr−1 in baseline CO level prior to 1700 AD (129 m depth) and the concentration remains elevated, even for ice layers depleted in ... |
author2 |
Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) College of Earth, Ocean and Atmospheric Sciences Corvallis (CEOAS) Oregon State University (OSU) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Desert Research Institute (DRI) Laboratoire Interdisciplinaire de Physique Saint Martin d’Hères (LIPhy) Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Faïn, Xavier Chappellaz, Jérôme Rhodes, Rachael, H Stowasser, Christopher Blunier, Thomas Mcconnell, Joe, R Brook, Edward, J Preunkert, Susanne Legrand, Michel Debois, Thibault Romanini, Daniele |
author_facet |
Faïn, Xavier Chappellaz, Jérôme Rhodes, Rachael, H Stowasser, Christopher Blunier, Thomas Mcconnell, Joe, R Brook, Edward, J Preunkert, Susanne Legrand, Michel Debois, Thibault Romanini, Daniele |
author_sort |
Faïn, Xavier |
title |
High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production |
title_short |
High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production |
title_full |
High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production |
title_fullStr |
High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production |
title_full_unstemmed |
High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production |
title_sort |
high resolution measurements of carbon monoxide along a late holocene greenland ice core: evidence for in situ production |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01109636 https://hal.science/hal-01109636/document https://hal.science/hal-01109636/file/cp-10-987-2014.pdf https://doi.org/10.5194/cp-10-987-2014 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core ice core North Greenland |
genre_facet |
Greenland Greenland ice core ice core North Greenland |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01109636 Climate of the Past, 2014, 10 (3), pp.987-1000. ⟨10.5194/cp-10-987-2014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-10-987-2014 hal-01109636 https://hal.science/hal-01109636 https://hal.science/hal-01109636/document https://hal.science/hal-01109636/file/cp-10-987-2014.pdf doi:10.5194/cp-10-987-2014 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-10-987-2014 |
container_title |
Climate of the Past |
container_volume |
10 |
container_issue |
3 |
container_start_page |
987 |
op_container_end_page |
1000 |
_version_ |
1798846777037684736 |
spelling |
ftunigrenoble:oai:HAL:hal-01109636v1 2024-05-12T08:04:34+00:00 High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in situ production Faïn, Xavier Chappellaz, Jérôme Rhodes, Rachael, H Stowasser, Christopher Blunier, Thomas Mcconnell, Joe, R Brook, Edward, J Preunkert, Susanne Legrand, Michel Debois, Thibault Romanini, Daniele Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) College of Earth, Ocean and Atmospheric Sciences Corvallis (CEOAS) Oregon State University (OSU) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Desert Research Institute (DRI) Laboratoire Interdisciplinaire de Physique Saint Martin d’Hères (LIPhy) Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS) 2014 https://hal.science/hal-01109636 https://hal.science/hal-01109636/document https://hal.science/hal-01109636/file/cp-10-987-2014.pdf https://doi.org/10.5194/cp-10-987-2014 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-10-987-2014 hal-01109636 https://hal.science/hal-01109636 https://hal.science/hal-01109636/document https://hal.science/hal-01109636/file/cp-10-987-2014.pdf doi:10.5194/cp-10-987-2014 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-01109636 Climate of the Past, 2014, 10 (3), pp.987-1000. ⟨10.5194/cp-10-987-2014⟩ [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] info:eu-repo/semantics/article Journal articles 2014 ftunigrenoble https://doi.org/10.5194/cp-10-987-2014 2024-04-18T03:52:14Z International audience We present high-resolution measurements of carbon monoxide (CO) concentrations from a shallow ice core of the North Greenland Eemian Ice Drilling project (NEEM-2011-S1). An optical-feedback cavity-enhanced absorption spectrometer (OF-CEAS) coupled to a continuous melter system performed continuous, online analysis during a four-week measurement campaign. This analytical setup generated stable measurements of CO concentrations with an external precision of 7.8 ppbv (1σ), based on repeated analyses of equivalent ice core sections. However, this first application of this measurement technique suffered from a poorly constrained procedural blank of 48 ± 25 ppbv and poor accuracy because an absolute calibration was not possible. The NEEM-2011-S1 CO record spans 1800 yr and the long-term trends within the most recent section of this record (i.e., post 1700 AD) resemble the existing discrete CO measurements from the Eurocore ice core. However, the CO concentration is highly variable (75–1327 ppbv range) throughout the ice core with high frequency (annual scale), high amplitude spikes characterizing the record. These CO signals are too abrupt and rapid to reflect atmospheric variability and their prevalence largely prevents interpretation of the record in terms of atmospheric CO variation. The abrupt CO spikes are likely the result of in situ production occurring within the ice itself, although the unlikely possibility of CO production driven by non-photolytic, fast kinetic processes within the continuous melter system cannot be excluded. We observe that 68% of the CO spikes are observed in ice layers enriched with pyrogenic aerosols. Such aerosols, originating from boreal biomass burning emissions, contain organic compounds, which may be oxidized or photodissociated to produce CO within the ice. However, the NEEM-2011-S1 record displays an increase of ~0.05 ppbv yr−1 in baseline CO level prior to 1700 AD (129 m depth) and the concentration remains elevated, even for ice layers depleted in ... Article in Journal/Newspaper Greenland Greenland ice core ice core North Greenland Université Grenoble Alpes: HAL Greenland Climate of the Past 10 3 987 1000 |