The High-Resolution Snow & Ice Monitoring service (HR-S&I) is part of the Copernicus Land Monitoring Service (CLMS). The snow aspect of the service provides products measuring Snow cover (FSC, FSTOC, FSCOG, GFSC), Snow state conditions (WDS, SWS) and persistent snow area (PSA). There are also ice products that measure ice cover (RLIE) and aggregated river and lake ice extent (ARLIE).More information about the data can be found here and the snow products user manual is located here. The Persistent Snow Area (PSA) product is generated annually from FSC products and provides the extent of persistent snow cover for that year (the area where snow is present throughout the hydrological year). The PSA corresponds to pixels with a snow probability greater than 0.95, i.e. where snow was observed in at least 95% of the observations (under clear-sky conditions). For optimisation reasons, the retrieval methodology assumes that the minimal snow cover is reached across Europe between 1 May and 30 September; thus the algorithm performs the aggregation only over this period.
Europe (Lat; 34N 66N Lon; -26W 44E)
May 2017 - ongoing
Annually (released in October after end of the hydrological year)
|Name||Description||Unit||Sentinel Hub Units||Data Values||No data|
|PSA||Persistent snow area||Dimensionless||DN||No persistent snow - 0, Persistent snow - 1||255|
|QC||Quality layer||Dimensionless||DN||High quality - 0, Medium quality, - 1, Low quality - 2, Minimal quality - 3||255|
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