ISWR all sky parametrization.
Using air temperature (TA) and relative humidity (RH) and optionnally cloud transmissivity (TAU_CLD), this computes the potential incoming solar radiation, based on the position of the sun in the sky (as a function of the location and the date) on the horizontal at ground level. If a cloud transmissivity (TAU_CLD) has been provided, or if an incoming long wave measurement is available, it corrects the generated iswr for cloudiness (basically doing like UnsworthGenerator in reverse), otherwise this assumes clear sky! If no TA or RH is available, average values will be used (in order to get an average value for the precipitable water vapor).
- Note
- This relies on SunObject to perform the heavy duty computation.
ISWR::generators = allsky_SW