Is cloudy weather sunny?
In meteorological industry standards, sunny days, partial cloudy days, cloudy days and cloudy days are judged by the percentage of cloud area in the sky: sunny days are defined as cloud cover of 0%-10%; 10%-30% partly cloudy; 30%-70% is cloudy; More than 70% is cloudy.
Visually, when it is sunny or partially cloudy, the blue sky is like washing, and there is no cloud or only a small amount of cumulus in Wan Li; Clouds cover most of the sky on cloudy days, mostly cumulus clouds or layered clouds with a small range, through which sunlight can shine on the ground; On cloudy days, a large range of layered clouds cover the sky, which has a great influence on the light transmittance, and generally the sun is not visible.
Is it cloudy with or without sun?
Cloudy weather often has the sun, but for a long time the sun will be blocked by clouds. Rainy day refers to an academic language in meteorology, and its definition in weather forecast is very strict. It is a weather phenomenon that can be called "cloudy between sunny days". Meteorological cloud cover means that the coverage of clouds in the sky reaches four-tenths to eight-tenths of the sky. Although there is little solar radiation on cloudy days, we should pay attention to prevent the interference of ultraviolet rays.