Validation of CALIPSO space-borne-derived attenuated backscatter coefficient profiles using a ground-based lidar in Athens, Greece - Mamouri, Rodanthi-Elisavet; Amiridis, Vassilis; Papayannis, A.; Giannakaki, Elina; Tsaknakis, Georgios; Balis, Dimitris S (Atmospheric Measurement Techniques, 2009)