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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/tc-2019-199
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2019-199
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 10 Sep 2019

Submitted as: research article | 10 Sep 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal The Cryosphere (TC).

Seasonal timeline for snow-covered sea ice processes in Nunavik's Deception Bay from TerraSAR-X and time-lapse photography

Sophie Dufour-Beauséjour1,2, Anna Wendleder3, Yves Gauthier1,2, Monique Bernier1,2, Jimmy Poulin1,2, Véronique Gilbert4, Juupi Tuniq5, Amélie Rouleau6, and Achim Roth3 Sophie Dufour-Beauséjour et al.
  • 1Centre Eau Terre Environnement, Institut national de la recherche scientifique (INRS), Quebec, G1K 9A9, Canada
  • 2Centre d’études nordiques (CEN), Université Laval, Quebec, G1V 0A6, Canada
  • 3German Aerospace Center (DLR), Oberpfaffenhofen, 82234 Weßling, Germany
  • 4Kativik Regional Government, Kuujjuaq, J0M 1C0, Canada
  • 5Salluit, J0M 1S0, Canada
  • 6Raglan Mine (a Glencore Company), Laval, H7S 1Z5, Canada

Abstract. Inuit have reported greater inter-annual variability in seasonal sea ice conditions. For Deception Bay (Nunavik), an area prized for seal and caribou hunting, an increase in solid precipitation and a shorter snow cover period is expected in the near future. In this context, and considering ice-breaking transport in the fjord by mining companies, we monitored sea ice in the area for three seasons of ice between 2015 and 2018. This article presents a case study for the combined use of TerraSAR- X and time-lapse photography time-series in order to monitor snow-covered sea ice seasonal processes. The X-band median backscattering is shown to reproduce the seasonal evolution expected from C-band data. Two different freeze-up and breakup processes are characterized. New X-band backscattering values from newly formed ice types are reported. The monitoring approach presented in this article has the potential to be applied in other remote locations, and processes outlined here may inform our understanding of other fjords or bays where ice-breakers transit.

Sophie Dufour-Beauséjour et al.
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Sophie Dufour-Beauséjour et al.
Data sets

Freeze-up and break-up observations in Nunavik's Deception Bay from TerraSAR-X and time-lapse photography S. Dufour-Beauséjour, A. Wendleder, Y. Gauthier, M. Bernier, J. Poulin, V. Gilbert, J. Tuniq, A. Rouleau, and A. Roth https://doi.pangaea.de/10.1594/PANGAEA.904960

Model code and software

tiffstats S. Dufour-Beauséjour https://doi.org/10.5281/zenodo.3352367

Video supplement

Freeze-up and break-up time-lapse movies in Nunavik's Deception Bay (2015-2018) S. Dufour-Beauséjour, A. Wendleder, Y. Gauthier, M. Bernier, J. Poulin, V. Gilbert, J. Tuniq, A. Rouleau, and A. Roth https://doi.pangaea.de/10.1594/PANGAEA.904956

Sophie Dufour-Beauséjour et al.
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Short summary
Inuit have reported greater variability in seasonal sea ice conditions. For Deception Bay (Nunavik), an area prized for seal and caribou hunting, an increase in snow precipitation and a shorter snow cover period is expected in the near future. In this context, and considering ice-breaking transport in the fjord by mining companies, we monitored sea ice in the area between 2015 and 2018. This article presents a case study for the combined use of TerraSAR-X and time-lapse photography time-series.
Inuit have reported greater variability in seasonal sea ice conditions. For Deception Bay...
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