Dark intervals

How a timestep without sun above the horizon is handled

What it is

Selects what the model does with a timestep in which the sun is below the horizon for the whole interval but the weather file still carries some diffuse light.

Typical values and how to get it

Chosen on the Model tab.

Values

Zero = zero (default): the timestep gets no light on the plane · Isotropic diffuse = isotropic_diffuse: the file's diffuse light of the timestep is placed on the plane as a uniform sky

API

site.night_irradiance