Description Usage Arguments Details Value
The mean error is about 0.7 percent for the full range. For zenith angles up to 40° the error is much smaller. The largest error is for zenith angle of 80° and 85° and for tau greater than 5. The maximum error is about 7 percent. At these large angles and opacities, the error has a minor effect on the calculated daily insolations.
1 | f_analytical(z, tau, al = 0.1)
|
z |
Zenith angle [deg]. |
tau |
Optical depth. |
al |
Albedo. |
Source: Equation 20? in Appelbaum, Joseph & Flood, Dennis (1990) - Update 1990.
Normalized net flux.
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