Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015–2016 snow accumulation season - Publication - MOST Wiedzy

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Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015–2016 snow accumulation season

Abstract

The Svalbard archipelago, located at the Arctic sea-ice edge between 74 and 81∘ N, is ∼60 % covered by glaciers. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected from both 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 seven glaciers across the archipelago. At each glacier, three snowpits were sampled along the altitudinal profiles and the collected samples were analysed for major ions (Ca2+, K+, Na+, Mg2+, NH+4, SO2−4, Br−, Cl−, and NO−3) 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 is characterized by the highest total ionic loads, mainly attributed to sea-salt particles. Both NO−3 and NH+4 in the seasonal snowpack reflect secondary aerosol formation and post-depositional changes, resulting in very different spatial deposition patterns: NO−3 has its highest loading in north-western Spitsbergen and NH+4 in the south-west. The Br− enrichment in snow is highest in north-eastern 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.

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Authors (14)

  • Photo of  Elena Barbaro

    Elena Barbaro

    • Institute of Polar Sciences, ISP-CNR & Ca' Foscari University of Venice
  • Photo of  Mats P. Björkman

    Mats P. Björkman

    • University of Gothenburg
  • Photo of  Carmen P. Vega

    Carmen P. Vega

    • Uppsala University - now at: Dirección Meteorológica de Chile, Dirección General de Aeronáutica Civil
  • Photo of  Christian Zdanowicz

    Christian Zdanowicz

    • Uppsala University
  • Photo of  Tonu Martma

    Tonu Martma

    • Tallinn University of Technology
  • Photo of  Jean-Charles Gallet

    Jean-Charles Gallet

    • Norwegian Polar Institute
  • Photo of  Daniel Kępski

    Daniel Kępski

    • Instytut Geofizyki PAN
  • Photo of  Catherine Larose

    Catherine Larose

    • University of Lyon
  • Photo of  Bartłomiej Luks

    Bartłomiej Luks

    • Instytut Geofizyki PAN
  • Photo of  Florian Tolle

    Florian Tolle

    • Université de Franche-Comté
  • Photo of  Thomas Schuler

    Thomas Schuler

    • University of Oslo & UNIS
  • Photo of mgr Aleksander Uszczyk

    Aleksander Uszczyk mgr

    • Uniwersytet Śląski
  • Photo of  Andrea Spolaor

    Andrea Spolaor

    • Institute of Polar Sciences, ISP-CNR & Ca' Foscari University of Venice

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
ATMOSPHERIC CHEMISTRY AND PHYSICS no. 21, pages 3163 - 3180,
ISSN: 1680-7316
Language:
English
Publication year:
2021
Bibliographic description:
Barbaro E., Koziol K., Björkman M., Vega C., Zdanowicz C., Martma T., Gallet J., Kępski D., Larose C., Luks B., Tolle F., Schuler T., Uszczyk A., Spolaor A.: Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015–2016 snow accumulation season// ATMOSPHERIC CHEMISTRY AND PHYSICS -Vol. 21,iss. 4 (2021), s.3163-3180
DOI:
Digital Object Identifier (open in new tab) 10.5194/acp-21-3163-2021
Sources of funding:
  • This research has been supported by the Svalbard Science Forum/Research Council of Norway (grant nos. 246731/E10 and 257636/E10), the Ministry of Science and Higher Education of Poland (grant no. 3841/E-41/S/2020), and the European Union's Horizon 2020 (grant no. 689443, iCUPE).
Verified by:
Gdańsk University of Technology

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