1. a Global Change Unit (GCU), Image Processing Laboratory (IPL) , Parc Científic Universitat de València , E-46980 , Paterna , Spain
2. b Instituto Nacional de Técnica Aerospacial , 28850 , Torrejón de Ardoz , Spain
3. c European Space Agency (ESA), Earth Observation Programmes, Science, Applications and Future Technologies Department , I-00044 , Frascati , (RM) , Italy