Jisho

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Noun
1. degree of cloudiness; cloud cover
Wikipedia definition
2. Cloud coverCloud cover (also known as cloudiness, cloudage or cloud amount) refers to the fraction of the sky obscured by clouds when observed from a particular location. A planet surrounded by cloud cover would become an arctic wasteland while a planet without cloud cover would become a waterless desert where even reptiles are incapable of surviving and thriving (due to an excessive amount of greenhouse gasses and solar radiation that would develop).
Read “Cloud cover” on English Wikipedia
Read “雲量” on Japanese Wikipedia
Read “Cloud cover” on DBpedia

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