What's the difference between weather and climate? Why "Fireworks go down to Yangzhou in March"?

Li Bai wrote in the poem "Yellow Crane Tower Farewell Meng Haoran to Yangzhou": An old friend stayed in the Yellow Crane Tower in the west, and fireworks went down to Yangzhou in March. We will inevitably have a question: Why did Meng Haoran go to Yangzhou in March? "Yangzhou" is not only a southeast metropolis, but also prosperous since ancient times. More importantly, "March" in Yangzhou is a season of beautiful spring and a hundred flowers blooming. The poet decorated "March" with "fireworks" and vividly wrote the gorgeous characteristics of the misty clouds in Yangchun. The place where Meng Haoran is going is really a good place, and the most important time is also very suitable. Yes, Yangzhou in March has a pleasant climate and flowers are in full bloom.

No one will forget the grand celebration of the 70th anniversary of the anti-fascist victory held in Beijing not long ago. The majestic and tidy team and advanced weapons and equipment all inspire the people of China. What is even more memorable is the only warm, comfortable and sunny weather in Wan Li these days. Many people think that God is happy with us.

Whether it is Yangzhou in March or the unforgettable 9.3 celebration, the weather has given people more good moods. But these two kinds

Is "heaven" the same thing? In fact, Yangzhou in March shows the climate characteristics of Yangzhou in spring, while the fine weather on September 3 is the atmospheric conditions of the day. So what's the difference between weather and climate?

First of all, the time scales of weather and climate are different. Weather generally refers to short-term comprehensive atmospheric conditions, such as one day or several days; On the other hand, climate refers to the comprehensive atmospheric conditions for a long period of time, such as a season, a year, etc. Secondly, the weather is changeable, just like a child's face. It may be sunny for a while, and it may be a storm for a while. The climate is relatively stable. For example, the climate characteristics of a place in the same season and different years are very similar. For example, can you tell me what the climate is like in summer of beijing? Yes, summer in Beijing is almost always hot and rainy. So what are the similarities between weather and climate? No matter weather or climate, it is a comprehensive state of overcast, sunny, cold, warm, wind and rain.

Warm and comfortable seasons or sunny weather will bring good mood to our life. Therefore, many literati will express their feelings and emotions by weather or climate. Can you tell which of the following two poems is about the weather and which is about the climate?

1.

Just like the strong wind in spring, it blows at night and blows open the petals of ten thousand pear trees;

2.

Old vines are faint crows, small bridges are flowing, and old roads are thin horses.

Do you know any other poems related to weather or climate?

Did the fireworks in Yangzhou in March also touch you? Then let's have a chance to enjoy it!

This work is original for "Popular Science China-A Little Link of Scientific Principles".

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