Figure 2
From: Intercomparison of in-situ aircraft and satellite aerosol measurements in the stratosphere

Ratios between the IAGOS-CARIBIC and monthly mean CALIOP aerosol backscattering from Fig. 1 for all years combined plotted against altitude above the tropopause. Data points strongly affected by volcanism are coloured according to specific eruption, whereas months when the volcanic influence is small are marked grey.