The Cryosphere, 7, 657-666, 2013
www.the-cryosphere.net/7/657/2013/
doi:10.5194/tc-7-657-2013
© Author(s) 2013. This work is distributed
under the Creative Commons Attribution 3.0 License.
Theoretical study of solar light reflectance from vertical snow surfaces
O. V. Nikolaeva1 and A. A. Kokhanovsky2
1Institute of Applied Mathematics, Miuuskaya Sq. 4, 125047, Moscow, Russia
2Institute of Environmental Physics, Bremen University, O. Hahn Allee 1, 28334 Bremen, Germany

Abstract. The influence of horizontal and vertical inhomogeneity of snow surfaces on solar light reflectance is studied using the radiative transfer theory (RTT). We compared 1-D RTT and 2-D RTT and found that large errors are produced if the 1-D RTT is used for the calculation of the snow reflection function (and, therefore, also in the retrievals of the snow grain radii) in 2-D measurement geometries. Such 2-D geometries are common in the procedures for the determination of the effective snow grain radii using near-infrared photography and spectroscopy of vertical snow walls. In particular, we have considered three cases for the numerical calculations: (1) the case with no black film; (2) the case with a black film at the pit's bottom; (3) the case with a black film at the pit's bottom and also at one of the vertical snow walls.

Citation: Nikolaeva, O. V. and Kokhanovsky, A. A.: Theoretical study of solar light reflectance from vertical snow surfaces, The Cryosphere, 7, 657-666, doi:10.5194/tc-7-657-2013, 2013.
 
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