Data produced as part of ESA Terrafirma project. The PSI processing has been carried out by GRS ([email protected]). PSI processing used 23 scenes of ENVISAT data. Number of of points = 148, Point density = 13.45 PS/km2, Reference point location is lon: 16.1397989507, lat: 40.3974810292. Terrafirma service providers have been validated by the ESA funded ValProj (http://www.terrafirma.eu.com/product_validation.htm) and passed an assessment to be a certified service provider.