The regime of Aerosol Optical Depth and Ångström exponent over Central and South Asia Athina Avgousta Floutsi, Marios Bruno Korras Carraca, Christos Matsoukas, Nikos Hatzianastassiou and George Biskos E3S Web Conf., 99 (2019) 01003 Published online: 18 June 2019 DOI: 10.1051/e3sconf/20199901003