17-850

optical thickness (of the atmosphere) [δ(ε)]

quantity defined by the formula

        

where Φe is the radiant flux of a collimated beam entering the upper limit layers of the atmosphere at an angle ε to the vertical, and  the attenuated radiant flux of that beam reaching the surface of the Earth

Unit: 1

Equivalent term: "optical depth"

See also "spectral optical depth"

Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer