solarforecastarbiter.reference_forecasts.forecast.cloud_cover_to_irradiance

solarforecastarbiter.reference_forecasts.forecast.cloud_cover_to_irradiance(latitude, longitude, elevation, cloud_cover, apparent_zenith, zenith)[source]

Estimates irradiance from cloud cover in the following steps:

  1. Determine clear sky GHI using Ineichen model and climatological turbidity.
  2. Estimate cloudy sky GHI using a function of cloud_cover and ghi_clear: cloud_cover_to_ghi_linear()
  3. Estimate cloudy sky DNI and DHI using the Erbs model.

Don’t use this function if you already have clear sky GHI. Instead, use cloud_cover_to_irradiance_ghi_clear()

Parameters:
latitude : float
longitude : float
elevation : float
cloud_cover : Series

Cloud cover in %.

apparent_zenith : Series

Solar apparent zenith

zenith : Series

Solar zenith
Returns:
ghi : pd.Series
dni : pd.Series
dhi : pd.Series

See also

cloud_cover_to_irradiance_ghi_clear, cloud_cover_to_ghi_linear