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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 6
The Cryosphere, 11, 2919–2942, 2017
https://doi.org/10.5194/tc-11-2919-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Interactions between climate change and the Cryosphere: SVALI,...

The Cryosphere, 11, 2919–2942, 2017
https://doi.org/10.5194/tc-11-2919-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 13 Dec 2017

Research article | 13 Dec 2017

Effects of snow grain shape on climate simulations: sensitivity tests with the Norwegian Earth System Model

Petri Räisänen et al.

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Short summary
While snow grains are non-spherical, spheres are often assumed in radiation calculations. Here, we replace spherical snow grains with non-spherical snow grains in a climate model. This leads to a somewhat higher snow albedo (by 0.02–0.03), increased snow and sea ice cover, and a distinctly colder climate (by over 1 K in the global mean). It also impacts the radiative effects of aerosols in snow. Overall, this work highlights the important role of snow albedo parameterization for climate models.
While snow grains are non-spherical, spheres are often assumed in radiation calculations. Here,...
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