This collection contains data for paper "Influx of African biomass burning aerosol during the Amazonian dry season through layered transatlantic transport of black carbon-rich smoke" (Holanda et al., 2019, ACP, "https://doi.org/10.5194/acp-20-4757-2020"). When using the data, please refer to the paper mentioned above. If further data needed, please contact the corresponding authors. File "ATTO.dat" contains daily averages of several quantities measured at the ATTO (Amazon Tall Tower Observatory) site. Time range: years 2013 to 2018. File "HALO.dat" contains measurements from flight "AC19" of the HALO aircraft campaign "ACRIDICON-CHUVA" in 1-second resolution. The flight took place on 2014-09-30 over the Amazon Basin and the Atlantic Ocean.