What is the meaning of the sun's clouds and rain in the weather forecast?

It's cloudy, but many people complain that the word "Yin" is ambiguous and ambiguous. In fact, "cloudy" weather is strictly defined, which refers to a kind of weather that can be called "between sunny and cloudy". Meteorology, sunny days mean that the cloud coverage in the sky accounts for one-tenth to four-tenths of the sky; Cloudy means that the cloud coverage in the sky accounts for four to eight tenths of the sky; A cloudy day means that more than eight-tenths of the sky is covered with clouds. It can be seen that sunshine can also be seen on cloudy days. In the weather forecast, meteorological terms such as "cloudy" or "sunny to cloudy" and "cloudy to cloudy" often appear. But many people complain that the meaning of the word "cloudy" is unclear and ambiguous. In fact, "cloudy" weather is strictly defined, which refers to a kind of weather that can be called "between sunny and cloudy". Meteorology, sunny days mean that the cloud coverage in the sky accounts for one-tenth to four-tenths of the sky; Cloudiness refers to the proportion of clouds covered in the sky.

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