solarspatialtools.irradiance.clearsky_index

solarspatialtools.irradiance.clearsky_index(ghi, clearsky_ghi, max_clearsky_index=2.0)

Wrapper for pvlib.irradiance.clearsky_index. Original doesn’t handle some of the datatypes that we use here cleanly.

The clearsky index is the ratio of global to clearsky global irradiance. Negative and non-finite clearsky index values will be truncated to zero.

Parameters

ghinumeric, pandas.Series, pandas.DataFrame

Global horizontal irradiance in W/m^2.

clearsky_ghinumeric

Modeled clearsky GHI

max_clearsky_indexnumeric, default 2.0

Maximum value of the clearsky index. The default, 2.0, allows for over-irradiance events typically seen in sub-hourly data.

Returns

clearsky_indexnumeric

Clearsky index