Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard
Abstract. The Svalbard archipelago, between 74° and 81° N, is ∼60 % covered by glaciers and located at the Arctic sea ice edge. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected both from lower and high...
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HAL CCSD
2021
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Online Access: | https://hal.archives-ouvertes.fr/hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093/document https://hal.archives-ouvertes.fr/hal-03080093/file/acp-2020-740.pdf https://doi.org/10.5194/acp-2020-740 |
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ftccsdartic:oai:HAL:hal-03080093v1 2023-05-15T15:16:45+02:00 Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard Barbaro, Elena Koziol, Krystyna Björkman, Mats Vega, Carmen Zdanowicz, Christian Martma, Tonu Gallet, Jean-Charles Kępski, Daniel Larose, Catherine Luks, Bartłomiej Tolle, Florian Schuler, Thomas Vikhamar Uszczyk, Aleksander Spolaor, Andrea Institute of Polar Sciences Venezia-Mestre (CNR-ISP) Consiglio Nazionale delle Ricerche Roma (CNR) CA FOSCARI UNIVERSITY OF VENICE DEPARTMENT OF ENVIRONMENTAL SCIENCES INFORMATICS AND STATISTICS VENICE ITA Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology Department of Earth Sciences, University of Gothenburg Dirección Meteorológica de Chile, Dirección General de Aeronáutica Civil 2021-01-08 https://hal.archives-ouvertes.fr/hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093/document https://hal.archives-ouvertes.fr/hal-03080093/file/acp-2020-740.pdf https://doi.org/10.5194/acp-2020-740 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-2020-740 hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093/document https://hal.archives-ouvertes.fr/hal-03080093/file/acp-2020-740.pdf doi:10.5194/acp-2020-740 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess https://hal.archives-ouvertes.fr/hal-03080093 2021 [CHIM]Chemical Sciences [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2021 ftccsdartic https://doi.org/10.5194/acp-2020-740 2021-10-16T23:02:58Z Abstract. The Svalbard archipelago, between 74° and 81° N, is ∼60 % covered by glaciers and located at the Arctic sea ice edge. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected both from lower and higher latitudes, which likely impact the chemical composition of snowfall. While long-term changes in Svalbard snow chemistry have been documented in ice cores drilled from two high-elevation glaciers, the spatial variability of the snowpack composition across Svalbard is comparatively poorly understood. Here, we report the results of the most comprehensive seasonal snow chemistry survey to date, carried out in April 2016 across 22 sites on 7 glaciers across the archipelago. At each glacier, three snow pits were sampled along altitudinal profiles and the collected samples were analysed for major ions (Ca2+, K+, Na+, Mg2+, NH+4, SO42−, Br−, Cl− and NO3−) and stable water isotopes (δ18O, δ2H). The main aims were to investigate the natural and anthropogenic processes influencing the snowpack and to better understand the influence of atmospheric aerosol transport and deposition patterns on the snow chemical composition. The snow deposited in the southern region of Svalbard was characterized by the highest total ionic loads, mainly attributed to sea salt particles. Both NO3− and NH4+ in the seasonal snowpack reflected secondary aerosol formation and post-depositional changes, resulting in very different spatial deposition patterns: NO3− had its highest loading in northwestern Spitsbergen, and NH4+ in the southwest. The Br− enrichment in snow was highest in northeastern glacier sites closest to areas of extensive sea ice coverage. Spatial correlation patterns between Na+ and δ18O suggest that the influence of long-range transport of aerosols on snow chemistry is proportionally greater above 600–700 m a.s.l. Report Arctic glacier Sea ice Svalbard Spitsbergen Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Svalbard Svalbard Archipelago |
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 |
[CHIM]Chemical Sciences [SDE]Environmental Sciences |
spellingShingle |
[CHIM]Chemical Sciences [SDE]Environmental Sciences Barbaro, Elena Koziol, Krystyna Björkman, Mats Vega, Carmen Zdanowicz, Christian Martma, Tonu Gallet, Jean-Charles Kępski, Daniel Larose, Catherine Luks, Bartłomiej Tolle, Florian Schuler, Thomas Vikhamar Uszczyk, Aleksander Spolaor, Andrea Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard |
topic_facet |
[CHIM]Chemical Sciences [SDE]Environmental Sciences |
description |
Abstract. The Svalbard archipelago, between 74° and 81° N, is ∼60 % covered by glaciers and located at the Arctic sea ice edge. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected both from lower and higher latitudes, which likely impact the chemical composition of snowfall. While long-term changes in Svalbard snow chemistry have been documented in ice cores drilled from two high-elevation glaciers, the spatial variability of the snowpack composition across Svalbard is comparatively poorly understood. Here, we report the results of the most comprehensive seasonal snow chemistry survey to date, carried out in April 2016 across 22 sites on 7 glaciers across the archipelago. At each glacier, three snow pits were sampled along altitudinal profiles and the collected samples were analysed for major ions (Ca2+, K+, Na+, Mg2+, NH+4, SO42−, Br−, Cl− and NO3−) and stable water isotopes (δ18O, δ2H). The main aims were to investigate the natural and anthropogenic processes influencing the snowpack and to better understand the influence of atmospheric aerosol transport and deposition patterns on the snow chemical composition. The snow deposited in the southern region of Svalbard was characterized by the highest total ionic loads, mainly attributed to sea salt particles. Both NO3− and NH4+ in the seasonal snowpack reflected secondary aerosol formation and post-depositional changes, resulting in very different spatial deposition patterns: NO3− had its highest loading in northwestern Spitsbergen, and NH4+ in the southwest. The Br− enrichment in snow was highest in northeastern glacier sites closest to areas of extensive sea ice coverage. Spatial correlation patterns between Na+ and δ18O suggest that the influence of long-range transport of aerosols on snow chemistry is proportionally greater above 600–700 m a.s.l. |
author2 |
Institute of Polar Sciences Venezia-Mestre (CNR-ISP) Consiglio Nazionale delle Ricerche Roma (CNR) CA FOSCARI UNIVERSITY OF VENICE DEPARTMENT OF ENVIRONMENTAL SCIENCES INFORMATICS AND STATISTICS VENICE ITA Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology Department of Earth Sciences, University of Gothenburg Dirección Meteorológica de Chile, Dirección General de Aeronáutica Civil |
format |
Report |
author |
Barbaro, Elena Koziol, Krystyna Björkman, Mats Vega, Carmen Zdanowicz, Christian Martma, Tonu Gallet, Jean-Charles Kępski, Daniel Larose, Catherine Luks, Bartłomiej Tolle, Florian Schuler, Thomas Vikhamar Uszczyk, Aleksander Spolaor, Andrea |
author_facet |
Barbaro, Elena Koziol, Krystyna Björkman, Mats Vega, Carmen Zdanowicz, Christian Martma, Tonu Gallet, Jean-Charles Kępski, Daniel Larose, Catherine Luks, Bartłomiej Tolle, Florian Schuler, Thomas Vikhamar Uszczyk, Aleksander Spolaor, Andrea |
author_sort |
Barbaro, Elena |
title |
Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard |
title_short |
Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard |
title_full |
Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard |
title_fullStr |
Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard |
title_full_unstemmed |
Measurement report: Spatial variations in snowpack ionic chemistry and water stable isotopes across Svalbard |
title_sort |
measurement report: spatial variations in snowpack ionic chemistry and water stable isotopes across svalbard |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093/document https://hal.archives-ouvertes.fr/hal-03080093/file/acp-2020-740.pdf https://doi.org/10.5194/acp-2020-740 |
geographic |
Arctic Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Svalbard Svalbard Archipelago |
genre |
Arctic glacier Sea ice Svalbard Spitsbergen |
genre_facet |
Arctic glacier Sea ice Svalbard Spitsbergen |
op_source |
https://hal.archives-ouvertes.fr/hal-03080093 2021 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-2020-740 hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093 https://hal.archives-ouvertes.fr/hal-03080093/document https://hal.archives-ouvertes.fr/hal-03080093/file/acp-2020-740.pdf doi:10.5194/acp-2020-740 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-2020-740 |
_version_ |
1766347042694627328 |