Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier
International audience The early 2000s accelerated ice-mass loss from large outlet glaciers in W and SE Greenland has been linked to warming of the subpolar North Atlantic. To investigate the uniqueness of this event, we extend the record of glacier and ocean changes back 1700 years by analyzing a s...
Published in: | Scientific Reports |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2017
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989/document https://hal.sorbonne-universite.fr/hal-01629989/file/s41598-017-13246-x.pdf https://doi.org/10.1038/s41598-017-13246-x |
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ftuniparissaclay:oai:HAL:hal-01629989v1 |
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openpolar |
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Open Polar |
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Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
Cryospheric science Palaeoceanography Palaeoclimate [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
Cryospheric science Palaeoceanography Palaeoclimate [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Andresen, Camilla S. Kokfelt, Ulla Sicre, Marie-Alexandrine Knudsen, Mads, Faurschou Dyke, Laurence, M Klein, Vincent Kaczmar, Fanny Miles, Martin W. Wangner, David J. Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier |
topic_facet |
Cryospheric science Palaeoceanography Palaeoclimate [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience The early 2000s accelerated ice-mass loss from large outlet glaciers in W and SE Greenland has been linked to warming of the subpolar North Atlantic. To investigate the uniqueness of this event, we extend the record of glacier and ocean changes back 1700 years by analyzing a sediment core from Sermilik Fjord near Helheim Glacier in SE Greenland. We show that multidecadal to centennial increases in alkenone-inferred Atlantic Water SSTs on the shelf occurred at times of reduced solar activity during the Little Ice Age, when the subpolar gyre weakened and shifted westward promoted by atmospheric blocking events. Helheim Glacier responded to many of these episodes with increased calving, but despite earlier multidecadal warming episodes matching the 20 th century high SSTs in magnitude, the glacier behaved differently during the 20 th century. We suggest the presence of a floating ice tongue since at least 300 AD lasting until 1900 AD followed by elevated 20 th century glacier calving due to the loss of the tongue. We attribute this regime shift to 20 th century unprecedented low sea-ice occurrence in the East Greenland Current and conclude that properties of this current are important for the stability of the present ice tongues in NE Greenland. |
author2 |
Geological Survey of Denmark and Greenland (GEUS) Biogéochimie-Traceurs-Paléoclimat (BTP) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Aarhus University Aarhus Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) University of Colorado Boulder European Project: 610055,EC:FP7:ERC,ERC-2013-SyG,ICE2ICE(2014) |
format |
Article in Journal/Newspaper |
author |
Andresen, Camilla S. Kokfelt, Ulla Sicre, Marie-Alexandrine Knudsen, Mads, Faurschou Dyke, Laurence, M Klein, Vincent Kaczmar, Fanny Miles, Martin W. Wangner, David J. |
author_facet |
Andresen, Camilla S. Kokfelt, Ulla Sicre, Marie-Alexandrine Knudsen, Mads, Faurschou Dyke, Laurence, M Klein, Vincent Kaczmar, Fanny Miles, Martin W. Wangner, David J. |
author_sort |
Andresen, Camilla S. |
title |
Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier |
title_short |
Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier |
title_full |
Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier |
title_fullStr |
Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier |
title_full_unstemmed |
Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier |
title_sort |
exceptional 20th century glaciological regime of a major se greenland outlet glacier |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989/document https://hal.sorbonne-universite.fr/hal-01629989/file/s41598-017-13246-x.pdf https://doi.org/10.1038/s41598-017-13246-x |
genre |
Arctic East Greenland east greenland current glacier Greenland North Atlantic Sea ice Sermilik |
genre_facet |
Arctic East Greenland east greenland current glacier Greenland North Atlantic Sea ice Sermilik |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.sorbonne-universite.fr/hal-01629989 Scientific Reports, 2017, 7, pp.13626. ⟨10.1038/s41598-017-13246-x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-017-13246-x info:eu-repo/grantAgreement/EC/FP7/610055/EU/Arctic Sea Ice and Greenland Ice Sheet Sensitivity/ICE2ICE hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989/document https://hal.sorbonne-universite.fr/hal-01629989/file/s41598-017-13246-x.pdf doi:10.1038/s41598-017-13246-x WOS: 000413191500065 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41598-017-13246-x |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
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1799471457716142080 |
spelling |
ftuniparissaclay:oai:HAL:hal-01629989v1 2024-05-19T07:33:24+00:00 Exceptional 20th century glaciological regime of a major SE Greenland outlet glacier Andresen, Camilla S. Kokfelt, Ulla Sicre, Marie-Alexandrine Knudsen, Mads, Faurschou Dyke, Laurence, M Klein, Vincent Kaczmar, Fanny Miles, Martin W. Wangner, David J. Geological Survey of Denmark and Greenland (GEUS) Biogéochimie-Traceurs-Paléoclimat (BTP) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Aarhus University Aarhus Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) University of Colorado Boulder European Project: 610055,EC:FP7:ERC,ERC-2013-SyG,ICE2ICE(2014) 2017 https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989/document https://hal.sorbonne-universite.fr/hal-01629989/file/s41598-017-13246-x.pdf https://doi.org/10.1038/s41598-017-13246-x en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-017-13246-x info:eu-repo/grantAgreement/EC/FP7/610055/EU/Arctic Sea Ice and Greenland Ice Sheet Sensitivity/ICE2ICE hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989/document https://hal.sorbonne-universite.fr/hal-01629989/file/s41598-017-13246-x.pdf doi:10.1038/s41598-017-13246-x WOS: 000413191500065 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.sorbonne-universite.fr/hal-01629989 Scientific Reports, 2017, 7, pp.13626. ⟨10.1038/s41598-017-13246-x⟩ Cryospheric science Palaeoceanography Palaeoclimate [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2017 ftuniparissaclay https://doi.org/10.1038/s41598-017-13246-x 2024-04-22T17:43:42Z International audience The early 2000s accelerated ice-mass loss from large outlet glaciers in W and SE Greenland has been linked to warming of the subpolar North Atlantic. To investigate the uniqueness of this event, we extend the record of glacier and ocean changes back 1700 years by analyzing a sediment core from Sermilik Fjord near Helheim Glacier in SE Greenland. We show that multidecadal to centennial increases in alkenone-inferred Atlantic Water SSTs on the shelf occurred at times of reduced solar activity during the Little Ice Age, when the subpolar gyre weakened and shifted westward promoted by atmospheric blocking events. Helheim Glacier responded to many of these episodes with increased calving, but despite earlier multidecadal warming episodes matching the 20 th century high SSTs in magnitude, the glacier behaved differently during the 20 th century. We suggest the presence of a floating ice tongue since at least 300 AD lasting until 1900 AD followed by elevated 20 th century glacier calving due to the loss of the tongue. We attribute this regime shift to 20 th century unprecedented low sea-ice occurrence in the East Greenland Current and conclude that properties of this current are important for the stability of the present ice tongues in NE Greenland. Article in Journal/Newspaper Arctic East Greenland east greenland current glacier Greenland North Atlantic Sea ice Sermilik Archives ouvertes de Paris-Saclay Scientific Reports 7 1 |