Climate change is rapidly deteriorating the climatic signal in Svalbard glaciers
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 observe...
Published in: | The Cryosphere |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00071056 2024-02-11T10:01:04+01:00 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 2024-01 electronic https://doi.org/10.5194/tc-18-307-2024 https://noa.gwlb.de/receive/cop_mods_00071056 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069368/tc-18-307-2024.pdf https://tc.copernicus.org/articles/18/307/2024/tc-18-307-2024.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-18-307-2024 https://noa.gwlb.de/receive/cop_mods_00071056 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069368/tc-18-307-2024.pdf https://tc.copernicus.org/articles/18/307/2024/tc-18-307-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/tc-18-307-2024 2024-01-22T00:22:46Z 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 Niedersächsisches Online-Archiv NOA Arctic Holtedahlfonna ENVELOPE(13.730,13.730,79.011,79.011) Svalbard Svalbard Archipelago The Cryosphere 18 1 307 320 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung 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 |
article Verlagsveröffentlichung |
description |
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. |
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 |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/tc-18-307-2024 https://noa.gwlb.de/receive/cop_mods_00071056 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069368/tc-18-307-2024.pdf https://tc.copernicus.org/articles/18/307/2024/tc-18-307-2024.pdf |
long_lat |
ENVELOPE(13.730,13.730,79.011,79.011) |
geographic |
Arctic Holtedahlfonna Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Holtedahlfonna Svalbard Svalbard Archipelago |
genre |
Arctic Climate change glacier North Atlantic Svalbard The Cryosphere |
genre_facet |
Arctic Climate change glacier North Atlantic Svalbard The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-18-307-2024 https://noa.gwlb.de/receive/cop_mods_00071056 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069368/tc-18-307-2024.pdf https://tc.copernicus.org/articles/18/307/2024/tc-18-307-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt 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 |
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1790596806886817792 |