Absorption of direct solar radiation by the atmosphere.
- The shortest wavelengths of the solar spectrum, the ultraviolet < .12 microns
are absorbed by oxygen and nitrogen in the upper atmosphere above 100 kilometers.
- UV radiation between between .12 and .18 microns are absorbed by oxygen
above 50 kilometers.
- UV radiation between .18 and .34 microns are absorbed between 50
kilometers and 10 kilometers by ozone.
- The atmosphere is nearly transparent to visible radiation between .34
and .7 microns.
- The infrared part of the solar spectrum is partially absorbed by water
vapor in the troposphere below 10 kilometers.