Data produced as part of ESA Terrafirma project. The PSI processing has been carried out by Altamira (). PSI processing used 26 scenes of Envisat data. Number of of points = 142890, Point density = 41 PS/km2, Reference point location is lon: 8.471, lat: 55.480. 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.