Figure 374
Fig. 374
normal (463x430, 11 KB) large (1024x951, 29 KB) EPS (12 KB)
The annually and zonally averaged perturbation of the sulfate aerosol surface area density (in mm2 cm-3) caused by an HSCT fleet of 500 aircraft flying at Mach 2.4 according to the AER 2-D model (Weisenstein et al., 1997). A sulfur emission index of 0.2 g kg-1 and a 10% conversion to sulfate particles with 10 nm radius in the plume are assumed in these calculations.