Calculates the solar beam irradiance on a horizontal surface at the top of the Martian
atmosphere (before atmospheric attenuation). Implements Equation 5 from Appelbaum & Flood (1990).
Usage
G_obh(Ls, phi = NULL, Ts = NULL, z = Z(Ls = Ls, phi = phi, Ts = Ts))
Arguments
- Ls
Areocentric longitude [deg]
- phi
Planetary latitude [deg]. Can be NULL if z is provided
- Ts
Solar time [h]. Can be NULL if z is provided
- z
Sun zenith angle [deg]. If not provided, calculated from Ls, phi, and Ts
Value
Beam irradiance at top of atmosphere [W/m²]