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      Albedo reduction of ice caused by dust and black carbon accumulation: a model applied to the K-transect, West Greenland

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      Journal of Glaciology

      Cambridge University Press (CUP)

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          ABSTRACT

          Surface melt in the ablation zone is dominated by atmospheric temperature and surface albedo. We developed a surface mass-balance model with a dynamic component of glacier ice albedo which includes surface properties, clouds and the angle of the sun. The ice albedo reduction is mainly caused by impurity accumulation of non-biological origin such as dust and black carbon (BC), which is currently not included in other surface mass-balance models. Simulations show that dust from meltout is the main source of impurity mass at the melting glacier ice surface, and current rates of atmospheric deposition of dust play only a minor role. However, for BC the atmospheric deposition is the main source where ice melt rates are below 1 m, and atmospheric deposition is most likely from intercontinental transport due to the scarce population and lack of forests in Greenland.

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          Most cited references 73

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          A Model for the Spectral Albedo of Snow. I: Pure Snow

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            A Model for the Spectral Albedo of Snow. II: Snow Containing Atmospheric Aerosols

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              An improved mass budget for the Greenland ice sheet

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                Author and article information

                Contributors
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                Journal
                Journal of Glaciology
                J. Glaciol.
                Cambridge University Press (CUP)
                0022-1430
                1727-5652
                December 2017
                November 27 2017
                December 2017
                : 63
                : 242
                : 1063-1076
                Article
                10.1017/jog.2017.74
                © 2017

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