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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-2018-130
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2018-130
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Brief communication 11 Jul 2018

Brief communication | 11 Jul 2018

Review status
This discussion paper is a preprint. A revision of the manuscript was accepted for the journal The Cryosphere (TC).

Brief communication: An Ice surface melt scheme including the diurnal cycle of solar radiation

Uta Krebs-Kanzow, Paul Gierz, and Gerrit Lohmann Uta Krebs-Kanzow et al.
  • Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany

Abstract. We propose a surface melt scheme for glaciated land surfaces, which only requires monthly mean short wave radiation and temperature as inputs, yet implicitly accounts for the diurnal cycle of short wave radiation. The scheme is deduced from the energy balance of a daily melt period which is defined by a minimum solar elevation angle. The scheme yields a better spatial representation of melting than common empirical schemes when applied to the Greenland Ice Sheet, using a 1948–2016 regional climate and snow pack simulation as a reference. The scheme is physically constrained and can be adapted to other regions or time periods.

Uta Krebs-Kanzow et al.
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Uta Krebs-Kanzow et al.
Uta Krebs-Kanzow et al.
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Short summary
We present a new surface melt scheme for land ice. Derived from the energy balance of melting surfaces, the scheme may be particularly suitable for long ice-sheet simulations of past and future climates. It is computationally inexpensive and can be adapted to changes in the Earth's orbit and atmospheric composition. The scheme yields a better spatial representation of surface melt than common empirical schemes, when applied to the Greenland Ice Sheet under present-day climate conditions.
We present a new surface melt scheme for land ice. Derived from the energy balance of melting...
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