云量就是天空中的云占(遮蔽)整个天空的比例。这个比例怎么估算呢?我们来做一个实验。你需要:一个白色纸盘,两张蓝色纸,剪刀,一支铅笔。第一步:用铅笔在两张蓝色纸上分别描出纸盘的轮廓。第二步:把两个蓝色圆片剪下来,当作蓝天。第三步:纸盘代表云彩。把纸盘 Cloudiness is the proportion of clouds in the sky (shadowing) the entire sky. How to estimate this ratio? Let’s make an experiment. You need: a white tray, two blue papers, scissors, a pencil. Step one: Use a pencil to sketch the outline of the tray separately on two blue sheets of paper. The second step: the two blue cut out, as the blue sky. The third step: paper tray on behalf of the cloud. Put the tray