The ER-2 and the P-3 performed three coordinated science flights on September 16, 18, and 20. Multiple transects under, within, and above the distinct layers of low clouds and elevated biomass burning aerosols (i.e. soot) above the Atlantic were observed with both aircrafts to study their properties along spatial gradients. 

AirMSPI quicklook images (RGB on the left, Degree of Polarization (DOLP) on the right) from Sunday Sept. 18's ORACLES flight. The DOLP image indicates the different physical properties of two distinct cloud layers.