Tag Archives: sunny

Solar irradiance on sunny and cloudy days

The solar radiation that is emitted from the sun in the form of electromagnetic waves, entering the atmosphere is filtered by the gases it contains, mainly by clouds that are floating, which bounce the light to operate as mirrors. When passing a cloud, global radiation decreases dramatically and diffuse radiation increases as a result of the deviation in the direction of the aces of light that causes the cloud.

Figure 1: Solar radiation in a sunny day

Figure 2: Solar radiation in a partly cloudy day