Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack
International audience In polar deserts, depth hoar (hereinafter: DH) growth is not systematic unlike on tundra and this is critical for snowpack properties. Here, we address the spatio-temporal variability of the DH layer in the polar desert at two sites in the Canadian High Arctic: Ward Hunt Islan...
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2021
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Online Access: | https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf https://doi.org/10.1017/jog.2021.105 |
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ftccsdartic:oai:HAL:hal-03427894v1 2023-05-15T14:57:53+02:00 Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack Davesne, Gautier Domine, Florent Fortier, Daniel Takuvik Joint International Laboratory ULAVAL-CNRS Centre National de la Recherche Scientifique (CNRS)-Université Laval Québec (ULaval) 2021-09-27 https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf https://doi.org/10.1017/jog.2021.105 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2021.105 hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf doi:10.1017/jog.2021.105 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-03427894 Journal of Glaciology, International Glaciological Society, 2021, pp.1 - 16. ⟨10.1017/jog.2021.105⟩ thermal conductivity polar desert soil moisture depth hoar Arctic snowpack [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1017/jog.2021.105 2021-11-20T23:27:56Z International audience In polar deserts, depth hoar (hereinafter: DH) growth is not systematic unlike on tundra and this is critical for snowpack properties. Here, we address the spatio-temporal variability of the DH layer in the polar desert at two sites in the Canadian High Arctic: Ward Hunt Island (83°N) and Resolute Bay (75°N). Our data show that, over humid areas, DH represented a larger fraction of the snowpack and was characterized by lower density and coarser crystals than over dry gravelly areas. Increased soil moisture extends the zero-curtain period during freeze-up, leading to stronger temperature gradients in the snowpack and greater kinetic metamorphism. Our results also demonstrate that the large inter-annual variability in DH is primarily driven by wind conditions in the fall since this key variable controls the initial snow density and snow onset date. These strong controls exerted by soil moisture and meteorological conditions on DH growth in polar deserts highlight the possibility of major changes in polar snowpacks physical properties in response to the rapid climate and environmental changes currently affecting these regions. Article in Journal/Newspaper Arctic Journal of Glaciology polar desert Resolute Bay Tundra Ward Hunt Island Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Hunt Island ENVELOPE(-100.601,-100.601,58.788,58.788) Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) Ward Hunt Island ENVELOPE(-74.161,-74.161,83.102,83.102) Journal of Glaciology 1 16 |
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 |
thermal conductivity polar desert soil moisture depth hoar Arctic snowpack [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
thermal conductivity polar desert soil moisture depth hoar Arctic snowpack [SDE.MCG]Environmental Sciences/Global Changes Davesne, Gautier Domine, Florent Fortier, Daniel Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
topic_facet |
thermal conductivity polar desert soil moisture depth hoar Arctic snowpack [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience In polar deserts, depth hoar (hereinafter: DH) growth is not systematic unlike on tundra and this is critical for snowpack properties. Here, we address the spatio-temporal variability of the DH layer in the polar desert at two sites in the Canadian High Arctic: Ward Hunt Island (83°N) and Resolute Bay (75°N). Our data show that, over humid areas, DH represented a larger fraction of the snowpack and was characterized by lower density and coarser crystals than over dry gravelly areas. Increased soil moisture extends the zero-curtain period during freeze-up, leading to stronger temperature gradients in the snowpack and greater kinetic metamorphism. Our results also demonstrate that the large inter-annual variability in DH is primarily driven by wind conditions in the fall since this key variable controls the initial snow density and snow onset date. These strong controls exerted by soil moisture and meteorological conditions on DH growth in polar deserts highlight the possibility of major changes in polar snowpacks physical properties in response to the rapid climate and environmental changes currently affecting these regions. |
author2 |
Takuvik Joint International Laboratory ULAVAL-CNRS Centre National de la Recherche Scientifique (CNRS)-Université Laval Québec (ULaval) |
format |
Article in Journal/Newspaper |
author |
Davesne, Gautier Domine, Florent Fortier, Daniel |
author_facet |
Davesne, Gautier Domine, Florent Fortier, Daniel |
author_sort |
Davesne, Gautier |
title |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_short |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_full |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_fullStr |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_full_unstemmed |
Effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
title_sort |
effects of meteorology and soil moisture on the spatio-temporal evolution of the depth hoar layer in the polar desert snowpack |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf https://doi.org/10.1017/jog.2021.105 |
long_lat |
ENVELOPE(-100.601,-100.601,58.788,58.788) ENVELOPE(-94.842,-94.842,74.677,74.677) ENVELOPE(-74.161,-74.161,83.102,83.102) |
geographic |
Arctic Hunt Island Resolute Bay Ward Hunt Island |
geographic_facet |
Arctic Hunt Island Resolute Bay Ward Hunt Island |
genre |
Arctic Journal of Glaciology polar desert Resolute Bay Tundra Ward Hunt Island |
genre_facet |
Arctic Journal of Glaciology polar desert Resolute Bay Tundra Ward Hunt Island |
op_source |
ISSN: 0022-1430 Journal of Glaciology https://hal.archives-ouvertes.fr/hal-03427894 Journal of Glaciology, International Glaciological Society, 2021, pp.1 - 16. ⟨10.1017/jog.2021.105⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2021.105 hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894 https://hal.archives-ouvertes.fr/hal-03427894/document https://hal.archives-ouvertes.fr/hal-03427894/file/135-DavesneJG2021.pdf doi:10.1017/jog.2021.105 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2021.105 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
16 |
_version_ |
1766329980830089216 |