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Calculates the solar beam energy on a horizontal surface at the top of the Martian atmosphere (before atmospheric attenuation) between specified start and end times. Implements Equation 11 from Appelbaum & Flood (1990).

Usage

I_obh(Ls, phi, Ts_start, Ts_end)

Arguments

Ls

Areocentric longitude [deg]

phi

Planetary latitude [deg]

Ts_start

Start of integration period [h]

Ts_end

End of integration period [h]

Value

Beam insolation at top of atmosphere over specified time period [Wh/m²]