Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island
International audience Ice patches have implications for landscape and ecosystem dynamics in polar deserts, however, the understanding of the driving factors that control their spatio-temporal variability is limited. This study aims to assess the seasonal and long-term evolution of ice patches on Wa...
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Online Access: | https://hal.science/hal-04308297 https://hal.science/hal-04308297/document https://hal.science/hal-04308297/file/150-DavesneJG2023.pdf https://doi.org/10.1017/jog.2023.44 |
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ftccsdartic:oai:HAL:hal-04308297v1 2023-12-31T10:04:06+01:00 Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island Davesne, Gautier Fortier, Daniel Domine, Florent Kinnard, Christophe Université de Montréal (UdeM) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Université du Québec à Trois-Rivières (UQTR) 2023 https://hal.science/hal-04308297 https://hal.science/hal-04308297/document https://hal.science/hal-04308297/file/150-DavesneJG2023.pdf https://doi.org/10.1017/jog.2023.44 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.44 hal-04308297 https://hal.science/hal-04308297 https://hal.science/hal-04308297/document https://hal.science/hal-04308297/file/150-DavesneJG2023.pdf doi:10.1017/jog.2023.44 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-04308297 Journal of Glaciology, In press, ⟨10.1017/jog.2023.44⟩ glacier mass balance climate change fog energy budget [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.1017/jog.2023.44 2023-12-02T23:33:03Z International audience Ice patches have implications for landscape and ecosystem dynamics in polar deserts, however, the understanding of the driving factors that control their spatio-temporal variability is limited. This study aims to assess the seasonal and long-term evolution of ice patches on Ward Hunt Island (WHI; 83°N, Canadian High Arctic) based on field measurements of surface mass and energy balance. Results show that mass gains of the ice patch systems occur mostly through drifting snow, making them highly linked to the topography as well as the frequency and magnitude of wind events. Summer ablation is primarily driven by net radiation, but the short-term variability in melt rate is driven by sensible heat fluxes. The highest ablation rates occur during the passage of warm fronts that combine strong winds and mild temperatures. Conversely, foggy days reduce fluxes of solar radiation and sensible heat to the snow/ice surface, thereby suppressing ablation. Ice patches are less climate-sensitive than other cryospheric elements due to a feedback between snow accumulation and topography, however, summer ablation is strongly influenced by micrometeorology. Model projections of these factors suggest that conditions will become critical for preserving ice patches at WHI and along the northern coast of Ellesmere Island as early as in the next decades. Article in Journal/Newspaper Arctic Climate change Ellesmere Island Journal of Glaciology Ward Hunt Island Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Glaciology 1 18 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
glacier mass balance climate change fog energy budget [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
glacier mass balance climate change fog energy budget [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Davesne, Gautier Fortier, Daniel Domine, Florent Kinnard, Christophe Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island |
topic_facet |
glacier mass balance climate change fog energy budget [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Ice patches have implications for landscape and ecosystem dynamics in polar deserts, however, the understanding of the driving factors that control their spatio-temporal variability is limited. This study aims to assess the seasonal and long-term evolution of ice patches on Ward Hunt Island (WHI; 83°N, Canadian High Arctic) based on field measurements of surface mass and energy balance. Results show that mass gains of the ice patch systems occur mostly through drifting snow, making them highly linked to the topography as well as the frequency and magnitude of wind events. Summer ablation is primarily driven by net radiation, but the short-term variability in melt rate is driven by sensible heat fluxes. The highest ablation rates occur during the passage of warm fronts that combine strong winds and mild temperatures. Conversely, foggy days reduce fluxes of solar radiation and sensible heat to the snow/ice surface, thereby suppressing ablation. Ice patches are less climate-sensitive than other cryospheric elements due to a feedback between snow accumulation and topography, however, summer ablation is strongly influenced by micrometeorology. Model projections of these factors suggest that conditions will become critical for preserving ice patches at WHI and along the northern coast of Ellesmere Island as early as in the next decades. |
author2 |
Université de Montréal (UdeM) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Université du Québec à Trois-Rivières (UQTR) |
format |
Article in Journal/Newspaper |
author |
Davesne, Gautier Fortier, Daniel Domine, Florent Kinnard, Christophe |
author_facet |
Davesne, Gautier Fortier, Daniel Domine, Florent Kinnard, Christophe |
author_sort |
Davesne, Gautier |
title |
Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island |
title_short |
Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island |
title_full |
Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island |
title_fullStr |
Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island |
title_full_unstemmed |
Mass-balance and ablation processes of a perennial polar ice patch on the northern coast of Ellesmere Island |
title_sort |
mass-balance and ablation processes of a perennial polar ice patch on the northern coast of ellesmere island |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04308297 https://hal.science/hal-04308297/document https://hal.science/hal-04308297/file/150-DavesneJG2023.pdf https://doi.org/10.1017/jog.2023.44 |
genre |
Arctic Climate change Ellesmere Island Journal of Glaciology Ward Hunt Island |
genre_facet |
Arctic Climate change Ellesmere Island Journal of Glaciology Ward Hunt Island |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-04308297 Journal of Glaciology, In press, ⟨10.1017/jog.2023.44⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2023.44 hal-04308297 https://hal.science/hal-04308297 https://hal.science/hal-04308297/document https://hal.science/hal-04308297/file/150-DavesneJG2023.pdf doi:10.1017/jog.2023.44 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2023.44 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
18 |
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1786829379960045568 |