International Snow Science Workshop Proceedings - Montana State University Library

Item: Comparison of Modelled and Measured Point Snow Profiles: A Tool for Validating Snow-Cover Models of the Next Generation?

• • Title: Comparison of Modelled and Measured Point Snow Profiles: A Tool for Validating Snow-Cover Models of the Next Generation?

    Proceedings: International Snow Science Workshop 2014 Proceedings, Banff, Canada

    Authors:

    • Charles Fierz  [ WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland ]
    • Franziska Gerber  [ WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland ]  [ CRYOS, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Switzerland ]
    • Michael Lehning  [ WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland ]  [ CRYOS, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Switzerland ]

    Date: 2014-09-29

    Abstract: ProfEval, a method to objectively compare measured with computed snow profiles, was proposed back in 2001. The method includes algorithms to compare measured point profiles such as snow temperature profiles to model results. However, the behaviour and characteristics of the agreement score for point profiles has not been fully investigated yet. In future, outputs of instruments such as the SnowMicroPen will be increasingly compared to simulation results of next generation snow-cover models. As these objective measurements now provide data at the sub-centimeter scale just as we have them from the computed profiles, they are perfectly adapted to this kind of comparison. In addition, we ask whether we need to consider additional parameters to assess the goodness of fit. The results of our analysis show that more than one evaluator is needed to fully capture all relevant aspects of a model – measurement comparison. Moreover, we now can quantify the range within which the agreement score can be used.

    Language of Article: English

    Presenters:

    Keywords: snow, snow-cover modelling, snow profiles, model validation

    Page Number(s): 869-870

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