Ozone has an absorption cross section of 10 times 1023 m2 at

Ozone has an absorption cross section of 1.0 times 10^-23 m^2 at a wavelength of 310 nm If the average ozone concentration in the ozone layer is 2 times 10^18 molecules m 3 and the thickness of the ozone layer is 25 km, what is the fraction of ultraviolet radiation that gets through when the solar zenith angle, SZA = 37 degree?

Solution

The fraction of UV Radiation gets through is affected by Zenith angle by Cosine of Zenith angle , i.e. cosine fo 37 deg

i.e. 0.798 ~ 80 %