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- W3197346095 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> In climate models, the snow albedo scheme generally calculates only a narrowband or broadband albedo, which leads to significant uncertainties. Here, we present the Versatile ALbedo calculation metHod based on spectrALLy fixed radiative vAriables (VALHALLA version 1.0) to optimize spectral snow albedo calculation. For this optimization, the energy absorbed by the snowpack is calculated by the spectral albedo model Two-streAm Radiative TransfEr in Snow (TARTES) and the spectral irradiance model Santa Barbara DISORT Atmospheric Radiative Transfer (SBDART). This calculation takes into account the spectral characteristics of the incident radiation and the optical properties of the snow based on an analytical approximation of the radiative transfer of snow. For this method, 30 wavelengths, called tie points (TPs), and 16 reference irradiance profiles are calculated to incorporate the absorbed energy and the reference irradiance. The absorbed energy is then interpolated for each wavelength between two TPs with adequate kernel functions derived from radiative transfer theory for snow and the atmosphere. We show that the accuracy of the absorbed energy calculation primarily depends on the adaptation of the irradiance of the reference profile to that of the simulation (absolute differenceâ<span class=inline-formula><1</span>âWâm<span class=inline-formula><sup>â2</sup></span> for broadband absorbed energy and absolute differenceâ<span class=inline-formula><0.005</span> for broadband albedo). In addition to the performance in terms of accuracy and calculation time, the method is adaptable to any atmospheric input (broadband, narrowband) and is easily adaptable for integration into a radiative scheme of a global or regional climate model." @default.
- W3197346095 created "2021-09-13" @default.
- W3197346095 creator A5017708843 @default.
- W3197346095 date "2021-08-27" @default.
- W3197346095 modified "2023-09-30" @default.
- W3197346095 title "AC to Joseph Cook comments" @default.
- W3197346095 doi "https://doi.org/10.5194/gmd-2020-442-ac1" @default.
- W3197346095 hasPublicationYear "2021" @default.
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