CCN activity and organic hygroscopicity of aerosols downwind of an urban region in central Amazonia: seasonal and diel variations and impact of anthropogenic emissions. - Thalman, Ryan; de Sá, Suzane S.; Palm, Brett B.; Barbosa, Henrique M. J.; Pöhlker, Mira L.; Alexander, M. Lizabeth; Brito, Joel; Carbone, Samara; Castillo, Paulo; Day, Douglas A.; Chongai Kuang; Manzi, Antonio; et al. (Atmospheric Chemistry & Physics, 2017)