o 10

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

3. Procedure for Calculating Photolysis Rates

As discussed in Section 3.C.2a, the rate of loss of a molecule A from the troposphere by photolysis is given by Eq. (CC):

where kp is the photolysis rate constant (s_l) given by Eq. (OO):

The primary quantum yield <£( A) represents the fraction of excited molecules that undergo photochemistry

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

TABLE 3.15 Actinic Flux Values F( k) at an Altitude of 15 km above the Earth's Surface as a Function of Wavelength Interval and Solar Zenith Angle within Specified Wavelength Intervals for Best Estimate Surface

Albedo Calculated by Madronich (1998)"

Wavelength interval _Solar zenith angle (deg)_

TABLE 3.15 Actinic Flux Values F( k) at an Altitude of 15 km above the Earth's Surface as a Function of Wavelength Interval and Solar Zenith Angle within Specified Wavelength Intervals for Best Estimate Surface

Albedo Calculated by Madronich (1998)"

Wavelength interval _Solar zenith angle (deg)_

(nm) |
Exponent6 |

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