Calculates the direct beam solar energy received on an inclined surface between specified start and end times. Obtained by integrating beam irradiance over the time period.
Arguments
- Ls
Areocentric longitude [deg]
- phi
Planetary latitude [deg]
- tau
Atmospheric optical depth (dimensionless)
- Ts_start
Start of integration period [h]
- Ts_end
End of integration period [h]
- beta
Surface tilt/slope angle from horizontal [deg]
- gamma_c
Surface azimuth angle [deg]. Zero facing equator, east negative, west positive (-180 to +180)