Traditional Culture Encyclopedia - Weather forecast - Is cloudy weather sunny?

Is cloudy weather sunny?

Cloudy weather is not sunny, but somewhere between sunny and cloudy.

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.