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Picard, Ghislain; Libois, Quentin; Arnaud, Laurent; Vérin, G; Dumont, Marie (2016): Time-series of snow spectral albedo and superficial snow specific surface area at Dome C in Antarctica, 2012-2015. PANGAEA, https://doi.org/10.1594/PANGAEA.860945, Supplement to: Picard, G et al. (2016): Development and calibration of an automatic spectral albedometer to estimate near-surface snow SSA time series. The Cryosphere, 10(3), 1297-1316, https://doi.org/10.5194/tc-10-1297-2016

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Abstract:
Spectral albedo has been measured at Dome C since December 2012 in the visible and near infrared (400 - 1050 nm) at sub-hourly resolution using a home-made spectral radiometer. Superficial specific surface area (SSA) has been estimated by fitting the observed albedo spectra to the analytical Asymptotic Approximation Radiative Transfer theory (AART).
The dataset includes fully-calibrated albedo and SSA that pass several quality checks as described in the companion article. Only data for solar zenith angles less than 75° have been included, which theoretically spans the period October-March. In addition, to correct for residual errors still affecting data after the calibration, especially at the solar zenith angles higher than 60°, we produced a higher quality albedo time-series as follows: In the SSA estimation process described in the companion paper, a scaling coefficient A between the observed albedo and the theoretical model predictions was introduced to cope with these errors. This coefficient thus provides a first order estimate of the residual error. By dividing the albedo by this coefficient, we produced the "scaled fully-calibrated albedo". We strongly recommend to use the latter for most applications because it generally remains in the physical range 0-1. The former albedo is provided for reference to the companion paper and because it does not depend on the SSA estimation process and its underlying assumptions.
Coverage:
Latitude: -74.670000 * Longitude: 124.170000
Date/Time Start: 1978-01-01T00:00:00 * Date/Time End: 2015-03-20T04:00:00
Event(s):
Dome_C * Latitude: -74.670000 * Longitude: 124.170000 * Date/Time: 1978-01-01T00:00:00 * Elevation: 3240.0 m * Recovery: 905 m * Location: Antarctica * Device: Snow/ice sample (SNOW) * Comment: about 40 ka
Size:
3 datasets

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