Hemispherical-directional reflectance factor (HDRF) of snow surfaces retrieved from airborne camera measurements in Antarctica during austral summer in 2013/14 (links to files) ...

• Main Authors: Carlsen, Tim, Birnbaum, Gerit, Ehrlich, André, Helm, Veit, Jäkel, Evelyn, Schäfer, Michael, Wendisch, Manfred
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: anisotropy; BRDF; camera observations; HDRF; reflectance; remote sensing; snow; snow grain size; snow surface roughness; Event label; DATE/TIME; File name; File format; File size; Uniform resource locator/link to file; Aircraft; ANT_2013/14; POLAR 6; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Arctic; Antarctic; Austral; Alfred Wegener Institute; Antarc*; Antarctica; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.920231; https://doi.pangaea.de/10.1594/PANGAEA.920231

The hemispherical-directional reflectance function (HDRF) of snow surfaces was measured in Antarctica during austral summer in 2013/14. The HDRF was retrieved from airborne measurements using a digital 180° fish-eye camera onboard the research aircraft Polar 6 operated by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven, Germany.The dataset contains the weighting functions for isotropic (f_iso), volumetric (f_vol), and geometric (f_geo) scattering obtained by inverting the kernel-driven, semi-empirical Ross-Thick-Li-Sparse-Reciprocal model for the bidirectional reflectance distribution function (BRDF). Along with the weighting functions f_iso, f_vol, and f_geo, the weights of determination (WoD) and root-mean-square errors (RMSE) are given as a criterion for the quality of the inversion for all 3 camera channels (Red: 602 nm central wavelength, Greeen: 538 nm, Blue: 470 nm). In addition, the footprint size of the camera observations is stated.The snow HDRF was ...