The data base contains aerosol number concentrations and size distributions measured from small environmental research aircraft over areas reported to be subject to changes in the hydrological cycle, especially declining rainfall trends. Size distributions combined with HYSPLIT backtrajectories can be used for source apportionment, regional studies for the quantification of particle emissions from selected dominant anthropogenic sources.

Light aircraft

In-situ measurement

Air

Upper planetary boundary layer

Lower free troposphere

Aerosol number counter

Aerosol size spectrometer

Dewpoint from relative humidity and temperature