Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate
International audience The preferential altitude of transport of continental tracers towards Antarctica under present and Last Glacial Maximum (21 kyr BP) conditions is analysed using an atmospheric general circulation model with idealized tracers which are emitted at the surface of Australia and So...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2010
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-00420834 https://doi.org/10.1016/j.quascirev.2009.06.020 |
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ftunivnantes:oai:HAL:insu-00420834v1 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Krinner, Gerhard Petit, Jean-Robert Delmonte, B. Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The preferential altitude of transport of continental tracers towards Antarctica under present and Last Glacial Maximum (21 kyr BP) conditions is analysed using an atmospheric general circulation model with idealized tracers which are emitted at the surface of Australia and South America. It is shown that the difference between the preferential transport altitude of Australian and South American tracers is similar in glacial and interglacial climates. Australian tracers arriving in Antarctica are consistently transported at higher altitudes than tracers emitted in South America. The frequency of low-level transport is stronger at the LGM than at present, reflecting a more vigorous atmospheric circulation at the LGM as a consequence of increased baroclinicity. While the spatial patterns of the total tracer concentrations at the Antarctic surface differ for Australian and South American tracers, with the regions of maximum surface concentration being located to the south-east of the respective tracer sources, the spatial distribution of the part advected via upper atmospheric levels is very similar for the Australian and South American tracers, with a maximum over Queen Maud Land. The simulated changes in transport characteristics cannot explain observed glacial to interglacial variations of dust size spectra which have been interpreted as indicators of the relative intensity of upper and lower level atmospheric dust transport to Antarctica. |
author2 |
CLIPS 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)-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) Dipartimento di Scienze dell'Ambiente e del Territorio (DISAT) Università degli Studi di Milano = University of Milan (UNIMI) European Project: 39423,FP6-SUSTDEV,EPICA-MIS |
format |
Article in Journal/Newspaper |
author |
Krinner, Gerhard Petit, Jean-Robert Delmonte, B. |
author_facet |
Krinner, Gerhard Petit, Jean-Robert Delmonte, B. |
author_sort |
Krinner, Gerhard |
title |
Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate |
title_short |
Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate |
title_full |
Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate |
title_fullStr |
Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate |
title_full_unstemmed |
Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate |
title_sort |
altitude of atmospheric tracer transport towards antarctica in present and glacial climate |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal-insu.archives-ouvertes.fr/insu-00420834 https://doi.org/10.1016/j.quascirev.2009.06.020 |
long_lat |
ENVELOPE(12.000,12.000,-72.500,-72.500) |
geographic |
Antarctic The Antarctic Queen Maud Land |
geographic_facet |
Antarctic The Antarctic Queen Maud Land |
genre |
Antarc* Antarctic Antarctica Queen Maud Land |
genre_facet |
Antarc* Antarctic Antarctica Queen Maud Land |
op_source |
ISSN: 0277-3791 Quaternary Science Reviews https://hal-insu.archives-ouvertes.fr/insu-00420834 Quaternary Science Reviews, 2010, 29 (1-2), pp.274-284. ⟨10.1016/j.quascirev.2009.06.020⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2009.06.020 info:eu-repo/grantAgreement//39423/EU/New Paleoreconstructions from Antarctic Ice and Marine Records/EPICA-MIS insu-00420834 https://hal-insu.archives-ouvertes.fr/insu-00420834 doi:10.1016/j.quascirev.2009.06.020 |
op_doi |
https://doi.org/10.1016/j.quascirev.2009.06.020 |
container_title |
Quaternary Science Reviews |
container_volume |
29 |
container_issue |
1-2 |
container_start_page |
274 |
op_container_end_page |
284 |
_version_ |
1766202652407889920 |
spelling |
ftunivnantes:oai:HAL:insu-00420834v1 2023-05-15T13:44:31+02:00 Altitude of atmospheric tracer transport towards Antarctica in present and glacial climate Krinner, Gerhard Petit, Jean-Robert Delmonte, B. CLIPS 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)-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) Dipartimento di Scienze dell'Ambiente e del Territorio (DISAT) Università degli Studi di Milano = University of Milan (UNIMI) European Project: 39423,FP6-SUSTDEV,EPICA-MIS 2010 https://hal-insu.archives-ouvertes.fr/insu-00420834 https://doi.org/10.1016/j.quascirev.2009.06.020 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2009.06.020 info:eu-repo/grantAgreement//39423/EU/New Paleoreconstructions from Antarctic Ice and Marine Records/EPICA-MIS insu-00420834 https://hal-insu.archives-ouvertes.fr/insu-00420834 doi:10.1016/j.quascirev.2009.06.020 ISSN: 0277-3791 Quaternary Science Reviews https://hal-insu.archives-ouvertes.fr/insu-00420834 Quaternary Science Reviews, 2010, 29 (1-2), pp.274-284. ⟨10.1016/j.quascirev.2009.06.020⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2010 ftunivnantes https://doi.org/10.1016/j.quascirev.2009.06.020 2023-03-01T00:43:25Z International audience The preferential altitude of transport of continental tracers towards Antarctica under present and Last Glacial Maximum (21 kyr BP) conditions is analysed using an atmospheric general circulation model with idealized tracers which are emitted at the surface of Australia and South America. It is shown that the difference between the preferential transport altitude of Australian and South American tracers is similar in glacial and interglacial climates. Australian tracers arriving in Antarctica are consistently transported at higher altitudes than tracers emitted in South America. The frequency of low-level transport is stronger at the LGM than at present, reflecting a more vigorous atmospheric circulation at the LGM as a consequence of increased baroclinicity. While the spatial patterns of the total tracer concentrations at the Antarctic surface differ for Australian and South American tracers, with the regions of maximum surface concentration being located to the south-east of the respective tracer sources, the spatial distribution of the part advected via upper atmospheric levels is very similar for the Australian and South American tracers, with a maximum over Queen Maud Land. The simulated changes in transport characteristics cannot explain observed glacial to interglacial variations of dust size spectra which have been interpreted as indicators of the relative intensity of upper and lower level atmospheric dust transport to Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Queen Maud Land Université de Nantes: HAL-UNIV-NANTES Antarctic The Antarctic Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) Quaternary Science Reviews 29 1-2 274 284 |