An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India)
International audience Analysis of surface energy balance (SEB) at the glacier/snow surface is the most comprehensive way to explain the atmosphere-glacier/snow interactions, but that requires extensive data. In this study, we have analysed an 11-year (2009-2020) record of the meteorological dataset...
Published in: | The Cryosphere |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256/document https://hal-insu.archives-ouvertes.fr/insu-03859256/file/tc-16-3775-2022.pdf https://doi.org/10.5194/tc-16-3775-2022 |
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ftunivnantes:oai:HAL:insu-03859256v1 2023-05-15T18:32:20+02:00 An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) Mandal, Arindan Angchuk, Thupstan Farooq Azam, Mohd Ramanathan, Alagappan Wagnon, Patrick Soheb, Mohd Singh, Chetan Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) 2022 https://hal-insu.archives-ouvertes.fr/insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256/document https://hal-insu.archives-ouvertes.fr/insu-03859256/file/tc-16-3775-2022.pdf https://doi.org/10.5194/tc-16-3775-2022 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-16-3775-2022 insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256/document https://hal-insu.archives-ouvertes.fr/insu-03859256/file/tc-16-3775-2022.pdf BIBCODE: 2022TCry.16.3775M doi:10.5194/tc-16-3775-2022 IRD: fdi:010086104 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal-insu.archives-ouvertes.fr/insu-03859256 The Cryosphere, 2022, 16, pp.3775-3799. ⟨10.5194/tc-16-3775-2022⟩ [SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.5194/tc-16-3775-2022 2023-03-01T01:18:21Z International audience Analysis of surface energy balance (SEB) at the glacier/snow surface is the most comprehensive way to explain the atmosphere-glacier/snow interactions, but that requires extensive data. In this study, we have analysed an 11-year (2009-2020) record of the meteorological dataset from an automatic weather station installed at 4863 ma.s.l. (above sea level) on a lateral moraine of the Chhota Shigri Glacier, western Himalaya. The study was carried out over the winter months (December to April) to understand SEB drivers and snow loses through sublimation. Furthermore, this study examines the role of cloud cover on SEB and turbulent heat fluxes. The turbulent heat fluxes were calculated using the bulk-aerodynamic method, including stability corrections. The net short-wave radiation was the primary energy source. However, the turbulent heat fluxes dissipated a significant amount of energy. The cloud cover plays an important role in limiting the incoming short-wave radiation by about 70 %. It also restricts the turbulent heat fluxes by more than 60 %, resulting in lower snow sublimation. During winter, turbulent latent heat flux contributed the largest proportion (64 %) in the total SEB, followed by net radiation (25 %) and sensible heat flux (11 %). Sublimation rates were 3 times higher in clear-sky than overcast conditions, indicating a strong role of cloud cover in shaping favourable conditions for turbulent latent heat flux by modulating the near-surface boundary layer conditions. Dry air, along with high snow-surface temperature and wind speed, favours sublimation. Besides, we also observed that strong and cold winds, possibly through mid-latitude western disturbances, impede sublimation by bringing high moisture content to the region and cooling the snow surface. The estimated snow sublimation fraction was 16 %-42 % of the total winter snowfall at the study site. This study substantiates that the snow sublimation is an essential variable to be considered in glaciohydrological modelling at ... Article in Journal/Newspaper The Cryosphere Université de Nantes: HAL-UNIV-NANTES The Cryosphere 16 9 3775 3799 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Mandal, Arindan Angchuk, Thupstan Farooq Azam, Mohd Ramanathan, Alagappan Wagnon, Patrick Soheb, Mohd Singh, Chetan An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) |
topic_facet |
[SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Analysis of surface energy balance (SEB) at the glacier/snow surface is the most comprehensive way to explain the atmosphere-glacier/snow interactions, but that requires extensive data. In this study, we have analysed an 11-year (2009-2020) record of the meteorological dataset from an automatic weather station installed at 4863 ma.s.l. (above sea level) on a lateral moraine of the Chhota Shigri Glacier, western Himalaya. The study was carried out over the winter months (December to April) to understand SEB drivers and snow loses through sublimation. Furthermore, this study examines the role of cloud cover on SEB and turbulent heat fluxes. The turbulent heat fluxes were calculated using the bulk-aerodynamic method, including stability corrections. The net short-wave radiation was the primary energy source. However, the turbulent heat fluxes dissipated a significant amount of energy. The cloud cover plays an important role in limiting the incoming short-wave radiation by about 70 %. It also restricts the turbulent heat fluxes by more than 60 %, resulting in lower snow sublimation. During winter, turbulent latent heat flux contributed the largest proportion (64 %) in the total SEB, followed by net radiation (25 %) and sensible heat flux (11 %). Sublimation rates were 3 times higher in clear-sky than overcast conditions, indicating a strong role of cloud cover in shaping favourable conditions for turbulent latent heat flux by modulating the near-surface boundary layer conditions. Dry air, along with high snow-surface temperature and wind speed, favours sublimation. Besides, we also observed that strong and cold winds, possibly through mid-latitude western disturbances, impede sublimation by bringing high moisture content to the region and cooling the snow surface. The estimated snow sublimation fraction was 16 %-42 % of the total winter snowfall at the study site. This study substantiates that the snow sublimation is an essential variable to be considered in glaciohydrological modelling at ... |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) |
format |
Article in Journal/Newspaper |
author |
Mandal, Arindan Angchuk, Thupstan Farooq Azam, Mohd Ramanathan, Alagappan Wagnon, Patrick Soheb, Mohd Singh, Chetan |
author_facet |
Mandal, Arindan Angchuk, Thupstan Farooq Azam, Mohd Ramanathan, Alagappan Wagnon, Patrick Soheb, Mohd Singh, Chetan |
author_sort |
Mandal, Arindan |
title |
An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) |
title_short |
An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) |
title_full |
An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) |
title_fullStr |
An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) |
title_full_unstemmed |
An 11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the Chhota Shigri Glacier moraine (western Himalaya, India) |
title_sort |
11-year record of wintertime snow-surface energy balance and sublimation at 4863 m a.s.l. on the chhota shigri glacier moraine (western himalaya, india) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256/document https://hal-insu.archives-ouvertes.fr/insu-03859256/file/tc-16-3775-2022.pdf https://doi.org/10.5194/tc-16-3775-2022 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal-insu.archives-ouvertes.fr/insu-03859256 The Cryosphere, 2022, 16, pp.3775-3799. ⟨10.5194/tc-16-3775-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-16-3775-2022 insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256 https://hal-insu.archives-ouvertes.fr/insu-03859256/document https://hal-insu.archives-ouvertes.fr/insu-03859256/file/tc-16-3775-2022.pdf BIBCODE: 2022TCry.16.3775M doi:10.5194/tc-16-3775-2022 IRD: fdi:010086104 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-16-3775-2022 |
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The Cryosphere |
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