Figure S1. Contour plots (left) show time series of aerosol
number size distributions between 10 – 1000 nm from combined nSMPS and
UHSAS measurements from aircraft measurements in and out of six active
smoke plumes. Size distributions were used to calculate total number
concentrations (Ntot) over the entire size range as well
as geometric mean diameters (Dgn) for the accumulation
mode (~40 – 1000nm). Scatter plots show
Ntot for each plume pass (center) as well as
accumulation mode Dgn as a function of estimated plume
age (right). Measurements made during RF4 and RF15 showed a bimodal
distribution. For these fires, the fraction of aerosol number in the
fine mode (ffine) is also shown in red on right.