ORACLES (ObseRvations of Aerosols above CLouds and their intEractionS) was a five year investigation with three Intensive Observation Periods (IOP) designed to study key processes that determine the climate impacts of African BB aerosols.

The ORACLES experiment provided multi-year airborne observations over the complete vertical column of the key parameters that drive aerosol-cloud interactions in the SE Atlantic, an area with some of the largest inter-model differences in aerosol forcing assessments on the planet.