How to observe the weather changes under ordinary circumstances?
Spring, summer, autumn and winter, rain, snow, rain, and weather are changeable. Weather is closely related to human life. And the change of weather has its own signs. Now, please look at the sky and see the floating clouds, the words of nature and the "signboard" of the weather. How to interpret it?
The clouds in the sky are really changeable. Some of them are like feathers, floating gently in the air; Some are like fish scales, neatly arranged in pieces; Some are like sheep, coming and going; Some are like a big quilt, which covers the sky tightly; Others are like mountains, rivers, lions and galloping horses ... Sometimes they decorate the sky beautifully, and sometimes they cover it with gloom. Just now, it was white clouds and the sun was shining; In a flash, it was overcast and raining cats and dogs. Clouds are like the "signboard" of weather: whatever clouds hang in the sky, what kind of weather will appear.
Experience tells us that thin clouds in the sky are often a symbol of fine weather; Those low and thick clouds are often a sign of rain and snow.
the lightest and tallest cloud is called cirrus. This kind of cloud is very thin, and sunlight can shine on the ground through it, and the light and shadow of houses and trees are still very clear. Cirrus clouds are floating continuously, sometimes like a white feather, sometimes like a white silk yarn. If cirrus clouds are arranged in rows in the air, like scale waves caused by a breeze blowing over the water, it becomes the cirrocumulus. Cirrus clouds and cirrocumulus are very high, where there is little water, and they generally do not bring rain and snow. There is also a kind of white clouds like cotton balls, called cumulus clouds. They are often scattered in the sky about two kilometers away, reflecting the bright sunshine, and the clouds are surrounded by golden brilliance. Cumulus clouds appear in the morning, most in the afternoon, and gradually dissipate in the evening. On sunny days, we will occasionally see a kind of cumulus cloud. Altocumulus clouds are groups of oblate spherical clouds, arranged in a well-balanced way, with a blue sky between them, which looks like snow-white sheep on the grassland from a distance. Cirrus, cirrocumulus, Cumulus and Cumulus are all beautiful.
when the continuous rain and snow are coming, cirrus clouds are gathering, and a thin layer of clouds gradually appears in the sky, as if covered with a white silk curtain. This cloud is called cirrostratus. Cirrostratus pushes forward slowly, and the weather will turn cloudy. Then, the clouds are getting lower and thicker. Looking at the sun or the moon through the clouds is like looking through a layer of ground glass. At this time, cirrostratus has changed its name and surname. It's time to call it a high-level cloud. There are high-level clouds, and it often rains or snows within a few hours. Finally, the clouds became lower and thicker, the sun and the moon hid, and the sky was densely covered with dark gray clouds. This cloud is called nimbostratus. As soon as nimbostratus was formed, continuous rain and snow came.
In summer, cumulus clouds will be seen in the sky before the thunderstorm comes. Cumulonimbus clouds become cumulonimbus clouds if they quickly bulge upward to form tall Yunshan, where the peaks compete for each other and soar into the zenith. The cumulonimbus cloud grows taller and taller, and the cloud bottom gradually turns black, and the Yunfeng gradually blurs. Soon, the whole Yunshan collapsed, and the dark clouds filled the sky. In an instant, thunder rumbled and lightning flashed, and immediately there was a heavy rain, sometimes bringing hail or tornadoes.
We can also infer the weather according to the glorious phenomenon on the clouds. Around the sun and the moon, sometimes there will be a beautiful colorful aperture, the inner layer is red and the outer layer is purple. This aperture is called halo. Solar and lunar halos often occur on the cirrostratus, and the large high-rise clouds and nimbostratus behind cirrostratus are signs of heavy rain. Therefore, there is a saying that "the sun is dizzy in the middle of the night, and the moon is dizzy at noon." It means that the weather will get worse when there is cirrostratus accompanied by dizziness. There is another kind of colored halo smaller than halo, which is called "Hua". The arrangement of colors is purple and red, which is just the opposite of halo. Rihua and Yuehua are mostly produced at the edge of high cumulus clouds. The central area of China has changed from small to large, and the weather tends to be fine. The central area of China has changed from big to small, and the weather may turn rainy. In summer, after the rain clears, a colorful arc is often hung on the cloud curtain opposite the sun. This is the rainbow. People often say: "the east rainbow thunders and the west rainbow rains." It means that if the rainbow is in the east, there will be thunder and no rain; The rainbow is in the west and there will be heavy rain. There is also a cloud color that often appears in the early morning or evening. The sun shines on the sky and turns the clouds red. This kind of cloud is called Xia Xia. The morning glow is in the west, indicating that rainy weather is attacking us; The sunset glow in the east means that the weather has been fine in recent days. Therefore, there is a proverb "Don't go out at sunrise, travel thousands of miles at sunset".
Clouds can help us identify rain or shine and predict weather changes, which is of great significance to industrial and agricultural production. If we want to learn to know the weather by looking at clouds, we should learn from experienced people with an open mind, pay attention to the changes of clouds, and master the rules through repeated observation. However, the weather changes are extremely complicated, and there is a certain limit to knowing the weather from the clouds. To accurately grasp the weather changes, we have to rely on the weather forecast.