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The Cryosphere An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/tc-2017-150
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
12 Sep 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal The Cryosphere (TC).
Reflective properties of melt ponds on sea ice
Aleksey Malinka1, Eleonora Zege1, Larysa Istomina2, Georg Heygster2, Gunnar Spreen2, Donald Perovich3, and Chris Polashenski4 1Institute of Physics, National Academy of Sciences of Belarus, 220072, pr. Nezavisimosti 68-2, Minsk, Belarus
2Institute of Environmental Physics, University of Bremen, Otto-Hahn-Allee 1, D-28359 Bremen, Germany
3Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USA
4Cold Regions Research and Engineering Laboratory, Engineer Research and Development Center, Hanover, New Hampshire, USA
Abstract. Melt ponds occupy a large part of the Arctic sea ice in summer and affect strongly the radiative budget of the atmosphere-ice-ocean system. In this study the melt pond reflectance is considered in the framework of the radiative transfer theory. The melt pond is modeled as a plane-parallel layer of pure water upon a layer of sea ice (pond bottom). The reflection is considered as comprising of Fresnel reflection by the water surface and multiple reflections between the pond surface and its bottom, which is assumed to be Lambertian. Analytical formulas are put forward to calculate the bidirectional reflectance factor (BRF) and the albedo at different incident angles. The effects of the incident conditions and the atmosphere state are examined. The optical model developed is verified with data from in situ measurements made during several field campaigns performed on landfast and pack ice in the Arctic. The comparison to field spectra demonstrates good performance of the developed model for the variety of melt pond types observed in the Arctic.

Citation: Malinka, A., Zege, E., Istomina, L., Heygster, G., Spreen, G., Perovich, D., and Polashenski, C.: Reflective properties of melt ponds on sea ice, The Cryosphere Discuss., https://doi.org/10.5194/tc-2017-150, in review, 2017.
Aleksey Malinka et al.
Aleksey Malinka et al.
Aleksey Malinka et al.

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Short summary
Melt ponds occupy a large part of the Arctic sea ice in summer and affect strongly the radiative budget of the atmosphere-ice-ocean system. The melt pond reflectance is modeled in the framework of the radiative transfer theory and validated with field observations. It improves understanding of melting sea ice and enables better parameterization of the surface in Arctic atmospheric remote sensing (clouds, aerosols, trace gases) and re-evaluating Arctic climatic feedbacks at a new accuracy level.
Melt ponds occupy a large part of the Arctic sea ice in summer and affect strongly the radiative...
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