大気と海洋

【Do you know?】Difference between clear, sunny, and cloudy

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Chi-ga kun
Chi-ga kun
Hakase! When you watch the weather section on TV, you see “clear,” “sunny,” and “cloudy” as weather conditions, right?
What is the difference between them? Is there any criteria for judging them?
Hakase
Hakase
You’ ve got a good point! While temperature and humidity can be quantified, the difference between clear skies and cloudy skies is difficult to quantify.
In this article, I will explain the difference between them.

What is the difference between ” clear,” “sunny,” and “cloudy” in the weather forecast?

Do you know the difference between them?

In this article, let’s learn the difference between clear skies, sunny skies, and cloudy skies with the guinea pigs!

The difference is “Cloud cover”

Hakase
Hakase
Let’s get right to the point.
The difference between clear skies, sunny skies, and cloudy skies is the difference in cloud cover.
Chi-ga kun
Chi-ga kun
Cloud cover??
Hakase
Hakase
Percentage of clouds when the percentage of the whole sky is 10.
Chi-ga kun
Chi-ga kun
It’ s based on what percentage of the entire sky is covered by clouds!

How much cloud cover is there in this sky?

Chi-ga kun
Chi-ga kun
However, I’m not quite sure how you determine cloud cover!
Let me know exactly how you do it!
Hakase
Hakase
Sure. For example, suppose you look up at the sky and see a sky like this.
Hakase
Hakase
Consider how much cloud cover there is in this case.
Chi-ga kun
Chi-ga kun
Let’s see, the definition of cloud cover is the percentage of clouds in the sky when the whole sky is 10, right?
In this example, about half of the sky is covered with clouds, so the cloud cover is about 5, I think
Hakase
Hakase
Well done. You can judge the percentage of clouds to the total.

Difference between “clear,” “sunny,” and “cloudy”

Chi-ga kun
Chi-ga kun
I understand how to determine cloud cover, but how do these cloud cover values correspond to weather?
Hakase
Hakase
I’ve put it all in this table!
Hakase
Hakase
As you can see here,
when cloud cover is 0-1, it’s clear skies,
when cloud cover is 2-8, it’s sunny,
and when cloud cover is 9-10, it’s cloudy!
Chi-ga kun
Chi-ga kun
I see! So, since the cloud cover in the sky just now was 5, we can conclude that it’s sunny!
Hakase
Hakase
That’s right.

Summerly

Hakase
Hakase
In this article, I explained the difference between clear skies, sunny skies, and cloudy skies. These are visually determined by the human eye, not by instruments, every day.
Chi-ga kun
Chi-ga kun
I’m surprised it was based on cloud cover, and visually! I will tell my friends about it soon.
Hakase! Thank you for your lesson today!

Thanks for reading to the end!