Measurements on the Acropolis museum roof

Taking radiometric measurements on the roof of the Acropolis museum. Prof. José Sobrino from the University of Valencia's Global Change Unit is on the right, Ioannis Daglis from the National Observatory of Athens (NOA) Institute for Space Applications and Remote Sensing (ISARS) is in the centre and Cristian Mattar, a PhD student of Prof. Sobrino's, is on the left.