Actinic Fluxes in the Stratosphere

FIGURE 3.30 Values of 7(N02) at 7- to 7.5-km altitude as a function of solar zenith angle (0) measured using 2ir radiometers (circles) compared to a model calculated photolysis rate (solid line). (Adapted from Volz-Thomas et al., 1996.) 

FIGURE 3.31 Some values of 7(N02) measured using different techniques as a function of solar zenith angle (a O) Kraus and Hofzumahaus (1998) (x) Madronich et al. (1983) ( ) Brauers and Hofzumahaus (1992) (a) Shetter et al. (1992) ( ) Lantz et al. 

Dickerson et al. (1982) and solid line is from Muller and Schurath (1986). (Adapted from Kraus and Hofzumahaus, 1998.) 

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Figure 3.32 shows some calculated actinic fluxes in the stratosphere at 20-, 30-, 40-, and 50-km altitude at a solar zenith angle of 30° (DeMore et al., 1997) as well as at ground level. The surface albedo was assumed to be 0.3 and the aerosol concentrations typical of moderate volcanic conditions. ... 

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