Aerosol optical depth retrievals in central Amazonia from a multi-filter rotating shadow-band radiometer calibrated on-site - Rosário, Nilton E; Sauini, Thamara; Pauliquevis, Theotonio; Barbosa, Henrique de Melo Jorge; Yamasoe, Marcia Akemi; Barja, Boris (Atmospheric Measurement Techniques, 2019)