Fig. 2
From: A number-based inventory of size-resolved black carbon particle emissions by global civil aviation
Estimations vs. measurements for black carbon particle number emission. The black carbon (BC) particle number emission index EIn(BC) is the number of the emitted BC particles due to the combustion of one kilogram of fuel (kg−1-fuel). FAC2 and FAC3 indicate the fractions of the predictions within a factor of two and three of the measurements, respectively. Dashed lines are 1:2 (or 2:1) ratio lines. Dotted lines are 1:3 (or 3:1) ratio lines. The vertical error bars represent the standard deviation of the estimated EIn(BC). The horizontal error bars are the uncertainties in the measurements if available
