Relative optical air mass m--Algorithm 1.22The value m
describes the length of an oblique path through the atmosphere in comparison
with the path of the sun's rays when the sun is directly overhead. The first
pair of formulae gives the ratio of mean atmospheric pressure at the site to
that at sea level, p/po. The third formula gives the relative air mass.
Station height, h metres
Solar altitude, gs radians
Kasten (1) Rogers(2).
- Kasten F and Young A T Revised optical air mass tables and approximation
formula Applied Optics 28 (22) 4735-4738 (1989)
- Rogers G G, Souster C G and Page J K The development of an interactive
computer program SUN1 for calculation of solar irradiances and daily
irradiations. Department of Building Science, University of Sheffield (1978)
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