Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica
International audience Continuous sea salt and mineral dust aerosol records have been studied on the two EPICA (European Project for Ice Coring in Antarctica) deep ice cores. The joint use of these records from opposite sides of the East Antarctic plateau allows for an estimate of changes in dust tr...
Published in: | Earth and Planetary Science Letters |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://insu.hal.science/insu-00376286 https://doi.org/10.1016/j.epsl.2007.06.014 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
paleoclimate ice core Antarctica sea salt mineral dust [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
paleoclimate ice core Antarctica sea salt mineral dust [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Fischer, Hubertus Fundel, Felix Ruth, Urs Twarloh, Birthe Wegner, Anna Udisti, Roberto Becagli, Silvia Castellano, Emiliano Morganti, Andrea Severi, Mirko Wolff, Eric Littot, Genevieve Röthlisberger, Regine Mulvaney, Rob A. Hutterli, Manuel Kaufmann, Patrik Federer, Urs Lambert, Fabrice Bigler, Matthias Hansson, Margareta Jonsell, Ulf de Angelis, Martine Boutron, Claude, F. Siggaard-Andersen, Marie-Louise Peder Steffensen, Jorgen Barbante, Carlo Gaspari, Vania Gabrielli, Paolo Wagenbach, Dietmar Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica |
topic_facet |
paleoclimate ice core Antarctica sea salt mineral dust [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Continuous sea salt and mineral dust aerosol records have been studied on the two EPICA (European Project for Ice Coring in Antarctica) deep ice cores. The joint use of these records from opposite sides of the East Antarctic plateau allows for an estimate of changes in dust transport and emission intensity as well as for the identification of regional differences in the sea salt aerosol source. The mineral dust flux records at both sites show a strong coherency over the last 150 kyr related to dust emission changes in the glacial Patagonian dust source with three times higher dust fluxes in the Atlantic compared to the Indian Ocean sector of the Southern Ocean (SO). Using a simple conceptual transport model this indicates that transport can explain only 40% of the atmospheric dust concentration changes in Antarctica, while factor 5–10 changes occurred. Accordingly, the main cause for the strong glacial dust flux changes in Antarctica must lie in environmental changes in Patagonia. Dust emissions, hence environmental conditions in Patagonia, were very similar during the last two glacials and interglacials, respectively, despite 2–4 °C warmer temperatures recorded in Antarctica during the penultimate interglacial than today. 2–3 times higher sea salt fluxes found in both ice cores in the glacial compared to the Holocene are difficult to reconcile with a largely unchanged transport intensity and the distant open ocean source. The substantial glacial enhancements in sea salt aerosol fluxes can be readily explained assuming sea ice formation as the main sea salt aerosol source with a significantly larger expansion of (summer) sea ice in the Weddell Sea than in the Indian Ocean sector. During the penultimate interglacial, our sea salt records point to a 50% reduction of winter sea ice coverage compared to the Holocene both in the Indian and Atlantic Ocean sector of the SO. However, from 20 to 80 ka before present sea salt fluxes show only very subdued millennial changes despite pronounced ... |
author2 |
Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie Universität Heidelberg Heidelberg = Heidelberg University Department of Chemistry Università degli Studi di Firenze = University of Florence (UniFI) 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) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Department of Physical Geography and Quaternary Geology Stockholm University 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) Institute for the Dynamics of Environmental Processes-CNR University of Ca’ Foscari Venice, Italy Environmental Sciences Department Institute of Environmental Physics Heidelberg (IUP) European Project for Ice Coring in Antarctica (EPICA) |
format |
Article in Journal/Newspaper |
author |
Fischer, Hubertus Fundel, Felix Ruth, Urs Twarloh, Birthe Wegner, Anna Udisti, Roberto Becagli, Silvia Castellano, Emiliano Morganti, Andrea Severi, Mirko Wolff, Eric Littot, Genevieve Röthlisberger, Regine Mulvaney, Rob A. Hutterli, Manuel Kaufmann, Patrik Federer, Urs Lambert, Fabrice Bigler, Matthias Hansson, Margareta Jonsell, Ulf de Angelis, Martine Boutron, Claude, F. Siggaard-Andersen, Marie-Louise Peder Steffensen, Jorgen Barbante, Carlo Gaspari, Vania Gabrielli, Paolo Wagenbach, Dietmar |
author_facet |
Fischer, Hubertus Fundel, Felix Ruth, Urs Twarloh, Birthe Wegner, Anna Udisti, Roberto Becagli, Silvia Castellano, Emiliano Morganti, Andrea Severi, Mirko Wolff, Eric Littot, Genevieve Röthlisberger, Regine Mulvaney, Rob A. Hutterli, Manuel Kaufmann, Patrik Federer, Urs Lambert, Fabrice Bigler, Matthias Hansson, Margareta Jonsell, Ulf de Angelis, Martine Boutron, Claude, F. Siggaard-Andersen, Marie-Louise Peder Steffensen, Jorgen Barbante, Carlo Gaspari, Vania Gabrielli, Paolo Wagenbach, Dietmar |
author_sort |
Fischer, Hubertus |
title |
Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica |
title_short |
Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica |
title_full |
Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica |
title_fullStr |
Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica |
title_full_unstemmed |
Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica |
title_sort |
reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep epica ice cores from the atlantic and indian ocean sector of antarctica |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://insu.hal.science/insu-00376286 https://doi.org/10.1016/j.epsl.2007.06.014 |
genre |
Antarc* Antarctic Antarctica EPICA ice core Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica EPICA ice core Sea ice Southern Ocean Weddell Sea |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://insu.hal.science/insu-00376286 Earth and Planetary Science Letters, 2007, 260 (1-2), pp.340 à 354. ⟨10.1016/j.epsl.2007.06.014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2007.06.014 insu-00376286 https://insu.hal.science/insu-00376286 doi:10.1016/j.epsl.2007.06.014 |
op_doi |
https://doi.org/10.1016/j.epsl.2007.06.014 |
container_title |
Earth and Planetary Science Letters |
container_volume |
260 |
container_issue |
1-2 |
container_start_page |
340 |
op_container_end_page |
354 |
_version_ |
1797573073160896512 |
spelling |
ftinsu:oai:HAL:insu-00376286v1 2024-04-28T08:01:14+00:00 Reconstruction of millennial changes in dust emission, transport and regional sea ice coverage using the deep EPICA ice cores from the Atlantic and Indian Ocean sector of Antarctica Fischer, Hubertus Fundel, Felix Ruth, Urs Twarloh, Birthe Wegner, Anna Udisti, Roberto Becagli, Silvia Castellano, Emiliano Morganti, Andrea Severi, Mirko Wolff, Eric Littot, Genevieve Röthlisberger, Regine Mulvaney, Rob A. Hutterli, Manuel Kaufmann, Patrik Federer, Urs Lambert, Fabrice Bigler, Matthias Hansson, Margareta Jonsell, Ulf de Angelis, Martine Boutron, Claude, F. Siggaard-Andersen, Marie-Louise Peder Steffensen, Jorgen Barbante, Carlo Gaspari, Vania Gabrielli, Paolo Wagenbach, Dietmar Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie Universität Heidelberg Heidelberg = Heidelberg University Department of Chemistry Università degli Studi di Firenze = University of Florence (UniFI) 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) Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Department of Physical Geography and Quaternary Geology Stockholm University 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) Institute for the Dynamics of Environmental Processes-CNR University of Ca’ Foscari Venice, Italy Environmental Sciences Department Institute of Environmental Physics Heidelberg (IUP) European Project for Ice Coring in Antarctica (EPICA) 2007 https://insu.hal.science/insu-00376286 https://doi.org/10.1016/j.epsl.2007.06.014 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2007.06.014 insu-00376286 https://insu.hal.science/insu-00376286 doi:10.1016/j.epsl.2007.06.014 ISSN: 0012-821X Earth and Planetary Science Letters https://insu.hal.science/insu-00376286 Earth and Planetary Science Letters, 2007, 260 (1-2), pp.340 à 354. ⟨10.1016/j.epsl.2007.06.014⟩ paleoclimate ice core Antarctica sea salt mineral dust [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2007 ftinsu https://doi.org/10.1016/j.epsl.2007.06.014 2024-04-05T00:31:43Z International audience Continuous sea salt and mineral dust aerosol records have been studied on the two EPICA (European Project for Ice Coring in Antarctica) deep ice cores. The joint use of these records from opposite sides of the East Antarctic plateau allows for an estimate of changes in dust transport and emission intensity as well as for the identification of regional differences in the sea salt aerosol source. The mineral dust flux records at both sites show a strong coherency over the last 150 kyr related to dust emission changes in the glacial Patagonian dust source with three times higher dust fluxes in the Atlantic compared to the Indian Ocean sector of the Southern Ocean (SO). Using a simple conceptual transport model this indicates that transport can explain only 40% of the atmospheric dust concentration changes in Antarctica, while factor 5–10 changes occurred. Accordingly, the main cause for the strong glacial dust flux changes in Antarctica must lie in environmental changes in Patagonia. Dust emissions, hence environmental conditions in Patagonia, were very similar during the last two glacials and interglacials, respectively, despite 2–4 °C warmer temperatures recorded in Antarctica during the penultimate interglacial than today. 2–3 times higher sea salt fluxes found in both ice cores in the glacial compared to the Holocene are difficult to reconcile with a largely unchanged transport intensity and the distant open ocean source. The substantial glacial enhancements in sea salt aerosol fluxes can be readily explained assuming sea ice formation as the main sea salt aerosol source with a significantly larger expansion of (summer) sea ice in the Weddell Sea than in the Indian Ocean sector. During the penultimate interglacial, our sea salt records point to a 50% reduction of winter sea ice coverage compared to the Holocene both in the Indian and Atlantic Ocean sector of the SO. However, from 20 to 80 ka before present sea salt fluxes show only very subdued millennial changes despite pronounced ... Article in Journal/Newspaper Antarc* Antarctic Antarctica EPICA ice core Sea ice Southern Ocean Weddell Sea Institut national des sciences de l'Univers: HAL-INSU Earth and Planetary Science Letters 260 1-2 340 354 |