Coastal pollution at national scale


  • Coastal pollution probability maps linked to the marine ecosystem on a national scale. The maps of which this product is composed are:
    • Probability of occurrence of algal bloom (Algal Bloom)
    • Assessment of water quality based on chlorophyll concentration and threshold values based on three coastal types, identified in the Water Framework Directive intercalibration technical report of the JRC (Section 2.3.3, EUR 23838 EN / 3 – 2009) from Mediterranean Geographical Intercalibration Group (MED GIG). Report available here.

Operating scenarios

  • Base knowledge

Technical specification

Spatial resolution300m – 1km
Coverage areaCorresponding to the entire Italian coast (about 7500km)
Geographic accuracyCircular Error 90%: <= 0.5 pixel (equal to half the spatial resolution)
Information Age36h
Measurement uncertainty90% confidence level> = 75%
Measurement / projection unitProjection: Geographic-WGS84
Input EO dataNot necessary
Other input data– Marine ecosystem maps for ordinary monitoring
Validation dataIn situ measurements from field campaigns
FormatGIS-file: shapefile and GeoTIFF Metadata: compliant with ISO 19115 standards, and with the specifications provided for by the INSPIRE Directive by the relative Legislative Decree
Refresh rate24h


Map of the state of coastal waters according to the terminology adopted by the Water Framework Directive on all Italian seas, obtained from Sentinel-3 data