We've edited and reformatted it, and linked it to our Web pages, and we'll continue to add our own specialized terms, illustrations, and examples. Please note that the Solar Radiation Monitoring Laboratory takes full responsibility for any inaccuracies that may occur. Usually considered to be synonymous with the airmass , is the approximate number of aerosols in a path through the atmosphere relative to the standard number of aerosols in a vertical path through a clean, dry atmosphere at sea level. The direction that a solar energy collector faces. The layer in the atmosphere with the most ozone, usually at an altitude of 25 km.
Ozone is created from oxygen by ultraviolet radiation bombardment.