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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CCSD
2017
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989v1/document https://hal.sorbonne-universite.fr/hal-01629989v1/file/s41598-017-13246-x.pdf https://doi.org/10.1038/s41598-017-13246-x |
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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. |
author2 | Geological Survey of Denmark and Greenland (GEUS) Biogéochimie-Traceurs-Paléoclimat (BTP) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL) 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-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)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-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)-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) |
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. |
collection | Institut national des sciences de l'Univers: HAL-INSU |
container_issue | 1 |
container_title | Scientific Reports |
container_volume | 7 |
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. |
format | Article in Journal/Newspaper |
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 |
geographic | Greenland |
geographic_facet | Greenland |
id | ftinsu:oai:HAL:hal-01629989v1 |
institution | Open Polar |
language | English |
op_collection_id | ftinsu |
op_doi | https://doi.org/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 WOS: 000413191500065 |
op_rights | http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
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⟩ |
publishDate | 2017 |
publisher | CCSD |
record_format | openpolar |
spelling | ftinsu:oai:HAL:hal-01629989v1 2025-03-16T15:20:23+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) Institut Pierre-Simon-Laplace (IPSL) 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-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)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-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)-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-01629989v1/document https://hal.sorbonne-universite.fr/hal-01629989v1/file/s41598-017-13246-x.pdf https://doi.org/10.1038/s41598-017-13246-x en eng 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 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 ftinsu https://doi.org/10.1038/s41598-017-13246-x 2025-02-20T15:43:04Z 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 Institut national des sciences de l'Univers: HAL-INSU Greenland Scientific Reports 7 1 |
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 |
title | 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_short | 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 |
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 |
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 |
url | https://hal.sorbonne-universite.fr/hal-01629989 https://hal.sorbonne-universite.fr/hal-01629989v1/document https://hal.sorbonne-universite.fr/hal-01629989v1/file/s41598-017-13246-x.pdf https://doi.org/10.1038/s41598-017-13246-x |