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Abstract:
Broadband albedo based on Kokhanovsky et al (2018, 2019, 2020) for snow and a fit of four OLCI bands’ TOA reflectance versus PROMICE automatic weather station albedo data for bare ice conditions when albedo is below 0.565. Coupled with a temporal filtering based on outlier detection after Box et al (2017) GEUS Bulletin, daily “gapless” 1 km grids are then generated by updating pixel values when an area is considered cloud free. See Wehrlé et al (2020) GEUS Bulletin (submitted) for additional detail.