Aerosol absorption profiling from the synergy of lidar and sun-photometry: the ACTRIS-2 campaigns in Germany, Greece and Cyprus oleh Tsekeri Alexandra, Amiridis Vassilis, Lopatin Anton, Marinou Eleni, Giannakaki Eleni, Pikridas Michael, Sciare Jean, Liakakou Eleni, Gerasopoulos Evangelos, Duesing Sebastian, Corbin Joel C., Gysel Martin, Bukowiecki Nicolas, Baars Holger, Engelmann Ronny, Wehner Birgit, Kottas Michael, Mamali Dimitra, Kokkalis Panagiotis, Raptis Panagiotis I., Stavroulas Iasonas, Keleshis Christos, Müller Detlef, Solomos Stavros, Binietoglou Ioannis, Mihalopoulos Nikolaos, Papayannis Alexandros, Stachlewska Iwona S., Igloffstein Julia, Wandinger Ulla, Ansmann Albert, Dubovik Oleg, Goloub Philippe