Finnish Meteorological Institute (FMI) demonstrates a new service for the Baltic Sea: Baltic Sea landfast ice extent and thickness (BALFI). The service incudes maps of snow and ice thickness and ice deformation map on the landfast ice. The ice thickness map also shows the full extent of the landfast ice. The maps are based on three Baltic Sea products of the Copernicus Marine Environment Monitoring Service (CMEMS), SENTINEL-1 SAR imagery, and a sea ice thermodynamic model (called HIGHTSI) run at FMI.
For more details see http://nsdc.fmi.fi/services/Copernicus_Marine_Service/BALFI and menu tabs ‘Landfast ice extent’, ‘Snow and sea ice thickness’ and 'Sea ice deformation'.
The BALFI maps are generated daily during the Baltic Sea ice season (Nov/Dec to May), with areas of new SENTINEL-1 SAR image acquisitions updated.
The BALFI maps cover the whole Baltic Sea with a 500 m pixel size. They are in Mercator projection used in the Finnish Ice Service ice chart (see http://en.ilmatieteenlaitos.fi/ice-conditions).
The maps are visualized in the zoomable map window, and map data at mouse cursor location is shown under 'Pixel value' by clicking a mouse button. Snow and ice thickness are shown in cm. Color code of the selected ice information map is shown under 'Legend'.
The maps can be also downloaded in GeoTiff-format.
In the map window the raster format BALFI maps are shown over vector format geographic dataset (i.e. map). This geographic dataset has much better spatial resolution than the 500-m BALFI maps, and therefore, near coast there may be missing pixels (i.e. no-data areas) in the BALFI maps or pixels are slightly overlapping land. For small coastal areas without information in the BALFI maps, data from the nearest map pixels can be used. Over the land the maps show a pixel value of 250.