Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers
International audience Abstract. The Svalbard archipelago is particularly sensitive to climate change due to the relatively low altitude of its main ice fields and its geographical location in the higher North Atlantic, where the effect of Arctic amplification is more significant. The largest temper...
Published in: | The Cryosphere |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2024
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Subjects: | |
Online Access: | https://hal.science/hal-04574851 https://hal.science/hal-04574851v1/document https://hal.science/hal-04574851v1/file/tc-18-307-2024.pdf https://doi.org/10.5194/tc-18-307-2024 |
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openpolar |
institution |
Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Spolaor, Andrea Scoto, Federico Larose, Catherine Barbaro, Elena Burgay, Francois Bjorkman, Mats, P Cappelletti, David Dallo, Federico de Blasi, Fabrizio Divine, Dmitry Dreossi, Giuliano Gabrieli, Jacopo Isaksson, Elisabeth Kohler, Jack Martma, Tonu Schmidt, Louise, S Schuler, Thomas, V Stenni, Barbara Turetta, Clara Luks, Bartłomiej Casado, Mathieu Gallet, Jean-Charles Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Abstract. The Svalbard archipelago is particularly sensitive to climate change due to the relatively low altitude of its main ice fields and its geographical location in the higher North Atlantic, where the effect of Arctic amplification is more significant. The largest temperature increases have been observed during winter, but increasing summer temperatures, above the melting point, have led to increased glacier melt. Here, we evaluate the impact of this increased melt on the preservation of the oxygen isotope (δ18O) signal in firn records. δ18O is commonly used as a proxy for past atmospheric temperature reconstructions, and, when preserved, it is a crucial parameter to date and align ice cores. By comparing four different firn cores collected in 2012, 2015, 2017 and 2019 at the top of the Holtedahlfonna ice field (1100 m a.s.l.), we show a progressive deterioration of the isotope signal, and we link its degradation to the increased occurrence and intensity of melt events. Our findings indicate that, starting from 2015, there has been an escalation in melting and percolation resulting from changes in the overall atmospheric conditions. This has led to the deterioration of the climate signal preserved within the firn or ice. Our observations correspond with the model's calculations, demonstrating an increase in water percolation since 2014, potentially reaching deeper layers of the firn. Although the δ18O signal still reflects the interannual temperature trend, more frequent melting events may in the future affect the interpretation of the isotopic signal, compromising the use of Svalbard ice cores. Our findings highlight the impact and the speed at which Arctic amplification is affecting Svalbard's cryosphere. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) |
format |
Article in Journal/Newspaper |
author |
Spolaor, Andrea Scoto, Federico Larose, Catherine Barbaro, Elena Burgay, Francois Bjorkman, Mats, P Cappelletti, David Dallo, Federico de Blasi, Fabrizio Divine, Dmitry Dreossi, Giuliano Gabrieli, Jacopo Isaksson, Elisabeth Kohler, Jack Martma, Tonu Schmidt, Louise, S Schuler, Thomas, V Stenni, Barbara Turetta, Clara Luks, Bartłomiej Casado, Mathieu Gallet, Jean-Charles |
author_facet |
Spolaor, Andrea Scoto, Federico Larose, Catherine Barbaro, Elena Burgay, Francois Bjorkman, Mats, P Cappelletti, David Dallo, Federico de Blasi, Fabrizio Divine, Dmitry Dreossi, Giuliano Gabrieli, Jacopo Isaksson, Elisabeth Kohler, Jack Martma, Tonu Schmidt, Louise, S Schuler, Thomas, V Stenni, Barbara Turetta, Clara Luks, Bartłomiej Casado, Mathieu Gallet, Jean-Charles |
author_sort |
Spolaor, Andrea |
title |
Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers |
title_short |
Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers |
title_full |
Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers |
title_fullStr |
Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers |
title_full_unstemmed |
Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers |
title_sort |
climate change is rapidly deteriorating the climatic signal in svalbard glaciers |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04574851 https://hal.science/hal-04574851v1/document https://hal.science/hal-04574851v1/file/tc-18-307-2024.pdf https://doi.org/10.5194/tc-18-307-2024 |
long_lat |
ENVELOPE(13.730,13.730,79.011,79.011) |
geographic |
Arctic Svalbard Svalbard Archipelago Holtedahlfonna |
geographic_facet |
Arctic Svalbard Svalbard Archipelago Holtedahlfonna |
genre |
Arctic Climate change glacier North Atlantic Svalbard The Cryosphere |
genre_facet |
Arctic Climate change glacier North Atlantic Svalbard The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-04574851 The Cryosphere, 2024, 18 (1), pp.307 - 320. ⟨10.5194/tc-18-307-2024⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-18-307-2024 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-18-307-2024 |
container_title |
The Cryosphere |
container_volume |
18 |
container_issue |
1 |
container_start_page |
307 |
op_container_end_page |
320 |
_version_ |
1812811319383949312 |
spelling |
ftceafr:oai:HAL:hal-04574851v1 2024-10-13T14:05:15+00:00 Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers Spolaor, Andrea Scoto, Federico Larose, Catherine Barbaro, Elena Burgay, Francois Bjorkman, Mats, P Cappelletti, David Dallo, Federico de Blasi, Fabrizio Divine, Dmitry Dreossi, Giuliano Gabrieli, Jacopo Isaksson, Elisabeth Kohler, Jack Martma, Tonu Schmidt, Louise, S Schuler, Thomas, V Stenni, Barbara Turetta, Clara Luks, Bartłomiej Casado, Mathieu Gallet, Jean-Charles Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 2024-01-16 https://hal.science/hal-04574851 https://hal.science/hal-04574851v1/document https://hal.science/hal-04574851v1/file/tc-18-307-2024.pdf https://doi.org/10.5194/tc-18-307-2024 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-18-307-2024 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-04574851 The Cryosphere, 2024, 18 (1), pp.307 - 320. ⟨10.5194/tc-18-307-2024⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2024 ftceafr https://doi.org/10.5194/tc-18-307-2024 2024-09-24T00:03:41Z International audience Abstract. The Svalbard archipelago is particularly sensitive to climate change due to the relatively low altitude of its main ice fields and its geographical location in the higher North Atlantic, where the effect of Arctic amplification is more significant. The largest temperature increases have been observed during winter, but increasing summer temperatures, above the melting point, have led to increased glacier melt. Here, we evaluate the impact of this increased melt on the preservation of the oxygen isotope (δ18O) signal in firn records. δ18O is commonly used as a proxy for past atmospheric temperature reconstructions, and, when preserved, it is a crucial parameter to date and align ice cores. By comparing four different firn cores collected in 2012, 2015, 2017 and 2019 at the top of the Holtedahlfonna ice field (1100 m a.s.l.), we show a progressive deterioration of the isotope signal, and we link its degradation to the increased occurrence and intensity of melt events. Our findings indicate that, starting from 2015, there has been an escalation in melting and percolation resulting from changes in the overall atmospheric conditions. This has led to the deterioration of the climate signal preserved within the firn or ice. Our observations correspond with the model's calculations, demonstrating an increase in water percolation since 2014, potentially reaching deeper layers of the firn. Although the δ18O signal still reflects the interannual temperature trend, more frequent melting events may in the future affect the interpretation of the isotopic signal, compromising the use of Svalbard ice cores. Our findings highlight the impact and the speed at which Arctic amplification is affecting Svalbard's cryosphere. Article in Journal/Newspaper Arctic Climate change glacier North Atlantic Svalbard The Cryosphere HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Arctic Svalbard Svalbard Archipelago Holtedahlfonna ENVELOPE(13.730,13.730,79.011,79.011) The Cryosphere 18 1 307 320 |