Since September 27, the P-3 returned to Wallops and the ER-2 flew from Namibia to Brazil on September 29 and from Brazil to Warner Robins (Georgia) on October 3. It will continue its transit back to Armstrong on October 7. The P-3 and the ER-2 were acquiring science data on the transit legs. AirMSPI acquired images across the entire Atlantic, including the overflight of two Aeronet stations on Ascension Island.

ER-2 and the P-3 performed their last science flights on September 22, 24, 25, and 27. Again, 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.

On September 27, the P-3 acquired science data on its way to the Ascension Island. It will continue on September 28 to Barbados before it returns to the US on September 29. 

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. 

The ER-2 and the P-3 performed three coordinated science flights on September 10, 12, and 14.  Amongst many other instruments were JPL’s AirMSPI onboard the ER-2 and APR-3 on the P-3.  Initial qualitative data analysis shows a distinct smoke layer embedded between the low marine stratocumulus cloud layer and mid-level convective cumulus clouds. A few high cirrus clouds were observed as well. One AirMSPI data acquisition was performed above the P-3 observing the solar radiance field above, within, and below the aerosol layer over one of the rare cloud-free Atlantic Ocean areas.