0g 10,000 5000 2000/1000 500 rh ATA 200 |80 NA 20| hh J L ij |o 4 @ oO ° Ss oO CONCENTRATION (ARBITRARY UNITS) nm MASS = 1500 fn — 140 160 180 200 220 240 HEIGHT IN KILOFEET ———~4l 260 280 #300 Fig. 2 -- The time development of a square concentration profile injected at 305 kilofeet for particles of mass 1500. The number above each concentration profile is the time in days for that profile. Input conditions for this calculation were: M = 1500 atomic units, m= 28,97 atomic units, A = 4.63 x 1078 em, a= 1.70x 10-8 cm, p = 1,72 x 107° gm/cm?®at 100 kilofeet, and T = 245°K.