In the research, the augmentation is based on the monthly averages of the albedo. Also used in cloudy and dark conditions were daily radiant temperature levels in the microwave area, and sea ice maps based on them.
Emmihenna Jääskeläinen, Finnish Meteorological Institute, firstname.lastname@example.org
Jääskeläinen, E., Manninen, T., Hakkarainen, J. and Tamminen, J.: Filling gaps of black-sky surface albedo of the Arctic sea ice using gradient boosting and brightness temperature data, International Journal of Applied Earth Observation and Geoinformation, 107,102701 (2022). doi:/10.1016/j.jag.2022.102701.
Scientific article is available on International Journal of Applied Earth Observation and Geoinformation.