SICEv2.3.2 Svalbard snow and ice broadband albedo and surface optical properties from Sentinel-3’s OLCI at 1000 m resolution, 2017-2023

Timespan 1 April, to 31 September for each year 2017 to 2023 and is being updated starting ~April each year Description For multiple Arctic glaciated regions (Table 1), 1km daily data (Table 2) from the SICE v1.6 algorithm, see Wehrlé et al (2021) and Kokhanovsky et al (2019) for details. Broadband albedo "albedo_bb_planar_sw" is after Kokhanovsky et al (2019). "BBA_combination" is albedo_bb_planar_sw for albedo_bb_planar_sw values above 0.565 and is combined with an ampirical albedo for albedo_bb_planar_sw below or equal to 0.565, see Wehrlé et al (2021). Data format is GeoTiff in the EPSG:3413 - WGS 84 / NSIDC Sea Ice Polar Stereographic North. We suggest using rasterio to read the data files. The data are also available from https://thredds.geus.dk/ Data Format Data format is GeoTiff in the EPSG:3413 - WGS 84 / NSIDC Sea Ice Polar Stereographic North projection. We suggest using rasterio to read the data files. Table 1, SICE regions, sorted by decreasing area region area, sq km area, sq km Greenland 1,744,666 82.7 Arctic Canada North 100,691 4.8 Alaska and Yukon 96,909 4.6 Arctic Canada South 40,970 1.9 Norway 34,018 1.6 Svalbard 32,506 1.5 Novaya Zemlya 21,506 1.0 Severnaya Zemlya 15,842 0.8 Frans Josef Land 12,131 0.6 Iceland 11,489 0.5 Table 2, SICE v1 data name description BBA_combination broadband albedo based on albedo_bb_planar_sw for albedo_bb_planar_sw above 0.565 and based on empirical algorithm for albedo_bb_planar_sw less than 0.565 SCDA_final cloud mask albedo_bb_planar_sw diagnostic_retrieval per pixel diagnostic info num_scenes number of scenes r_TOA_01 TOA reflectance, band 1 r_TOA_06 TOA reflectance, band 6 r_TOA_17 TOA reflectance, band 17 r_TOA_21 TOA reflectance, band 21 snow_specific_surface_area SSA Reference Publications Kokhanovsky A., Lamare M., Danne O., Brockmann C., Dumont M., Picard G., Arnaud L., Favier V., Jourdain B., Le Meur E., Di Mauro B., Aoki T., Niwano M., Rozanov V., Korkin S., Kipfstuhl S., Freitag J., Hoerhold M., Zuhr A., Vladimirova D., Faber A-K., Steen-Larsen HC., Wahl S., Andersen JK., Vandecrux B., van As D., Mankoff KD., Kern M., Zege E., Box JE. 2019. Retrieval of Snow Properties from the Sentinel-3 Ocean and Land Colour Instrument. Remote Sensing 11:2280. https://doi.org/10.3390/rs11192280 Wehrlé A., Box JE., Niwano M., Anesio AM., Fausto RS. 2021. Greenland bare-ice albedo from PROMICE automatic weather station measurements and Sentinel-3 satellite observations. GEUS Bulletin 47. https://doi.org/10.34194/geusb.v47.5284 Related Publications Kokhanovsky A., Lamare M., Di Mauro B., Picard G., Arnaud L., Dumont M., Tuzet F., Brockmann C., Box JE. 2018. On the reflectance spectroscopy of snow. The Cryosphere 12:2371–2382. https://doi.org/10.5194/tc-12-2371-2018 Related Information https://snow.geus.dk/ Questions? contact Jason Box, [e-mail]