This collection contains time series of cumulative fire intensity along the backward trajectories starting at the ATTO (Amazon Tall Tower Observatory) site. The time series are based on HYSPLIT back trajectory calculations and fire data of the Global Fire Assimilation System (GFAS). The data in file "H1000_Cer_Rain.dat" are used in 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-2019-775"). See there for further information. When using the data, please also refer to that paper.