Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
The Cryosphere, 10, 1991-2002, 2016
http://www.the-cryosphere.net/10/1991/2016/
doi:10.5194/tc-10-1991-2016
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
07 Sep 2016
A representative density profile of the North Greenland snowpack
Christoph Florian Schaller1, Johannes Freitag1, Sepp Kipfstuhl1, Thomas Laepple2, Hans Christian Steen-Larsen3, and Olaf Eisen1,4 1Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
2Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam, Germany
3Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
4Department of Geosciences, University of Bremen, Bremen, Germany
Abstract. Along a traverse through North Greenland in May 2015 we collected snow cores up to 2 m depth and analyzed their density and water isotopic composition. A new sampling technique and an adapted algorithm for comparing data sets from different sites and aligning stratigraphic features are presented. We find good agreement of the density layering in the snowpack over hundreds of kilometers, which allows the construction of a representative density profile. The results are supported by an empirical statistical density model, which is used to generate sets of random profiles and validate the applied methods. Furthermore we are able to calculate annual accumulation rates, align melt layers and observe isotopic temperatures in the area back to 2010. Distinct relations of δ18O with both accumulation rate and density are deduced. Inter alia the depths of the 2012 melt layers and high-resolution densities are provided for applications in remote sensing.

Citation: Schaller, C. F., Freitag, J., Kipfstuhl, S., Laepple, T., Steen-Larsen, H. C., and Eisen, O.: A representative density profile of the North Greenland snowpack, The Cryosphere, 10, 1991-2002, doi:10.5194/tc-10-1991-2016, 2016.
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Short summary
Along a traverse through North Greenland in May 2015 we collected snow cores up to 2 m in depth and analyzed their properties (e.g., density). A new technique for this sampling and an adapted algorithm for comparing data sets from different positions and aligning stratigraphic features are presented. We find good agreement of the density layering in the snowpack over hundreds of kilometers. This allows the construction of a representative density profile that is statistically validated.
Along a traverse through North Greenland in May 2015 we collected snow cores up to 2 m in depth...
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