Why does it rain on a sunny day?

As the saying goes, seeing the wind is rain, and the formation of rain must be under certain conditions. Water vapor in the air condenses into small water droplets when it is cold. When it gathers to a certain degree (that is, its weight reaches a certain degree), it will fall due to gravity. In the process of falling, it will be affected by gravity, air resistance and wind direction, but it will not fall vertically. Rain will be seen on sunny days, so there must be rain nearby, said the first respondent.

Sometimes it rains on sunny days!

There is a strange phenomenon in Wulong Mountain Scenic Resort Scenic Spot in Dandong, Liaoning Province, which is clearly a clear-sky Wan Li. However, as long as you walk to two vacant lots with an area of about 3 square meters about 20 meters away from Foye Cavern, you can feel the rain in Mao Mao, and once you leave these two areas, you will never see any traces of rain.

In Wulong Mountain Scenic Resort Scenic Spot in Dandong, Liaoning Province, it rained in Mao Mao on a sunny day, only in two areas of about 3 square meters near Foye Cavern. Even more amazing is that if people clap their hands more, it will rain harder and harder. Can voice control be used when it rains? What caused the spectacle of sunny and rainy days in Wulong Mountain Scenic Resort Scenic Area?

Two flat areas of Wulong Mountain Scenic Resort Scenic Area in Liaoning Province are raining in Mao Mao on sunny days.

Recently, tourists visiting Wulong Mountain Scenic Resort Scenic Spot in Dandong, Liaoning Province discovered a strange phenomenon, which is clearly a clear Wan Li. However, as long as you walk to two vacant lots with an area of about 3 square meters about 20 meters away from Foye Cavern, you can feel that it is raining in Mao Mao, and once you leave these two areas, there is no trace of rain. The two vacant lots are covered with trees. If tourists stand under the tree and clap their hands or talk loudly, it will rain harder and harder. During the "Eleventh" Golden Week, the scenic spot also organized 30 tourists to stand under the tree at the same time to experience the wonders of sunny and rainy days. After the tourists clapped their hands together, they found that the speed of raindrops falling was obviously accelerated, and everyone could not help but exclaim "magic".

Why did it suddenly rain in the clear and cloudless sky? Is it alone in these two small areas with an area of only 3 square meters? The "sunny rain" in Wulong Mountain Scenic Resort Scenic Area has attracted more and more tourists to stop and watch. Some tourists tried to lick the rain with their tongues and found that there was no smell. There are also tourists who are curious and spread tissues on the ground. As a result, it didn't take long for the whole facial tissue to be wet, and the surrounding steps were also wet. Some curious people also tried to observe the surrounding environment to find the reason, but failed.

According to Zhang Chunsheng, the manager in charge of inspection in Wulong Mountain Scenic Resort Scenic Spot, the staff of the scenic spot have been observing here for some time, but so far they still can't explain this sunny and rainy phenomenon. Zhang Chunsheng introduced that the sunny and rainy place is located halfway up the mountain in Wulong Mountain Scenic Resort Scenic Area. The main peak is 708.5 meters high and more than 300 meters above sea level. The linear distance between the two rainy places is about seven or eight meters, and there is an ancient well in the middle, named "Holy Well".

This place has always been mysterious in the hearts of local people. In Foye Cavern, above the "Holy Well", people often go there to burn incense and worship Buddha. There is a "Drip Guanyin" between the "Holy Well" and Foye Cavern. There is a local legend that the holy water in the "holy well" can cure diseases. At the end of the Qing Dynasty, there was no rain for more than 0/00 days in/kloc, which was very dry. People come here with wicker hats on their heads and wicker in their hands to beg for rain. The people brought some water from the holy well, then sprinkled it on the ground with wicker, kneeling on the ground to beg for rain and burn incense. As a result, it really rained in Mao Mao when the sky was clear in Wan Li. It is often sunny and rainy in October. Is this a coincidence or another reason?

Of course, legends can only be legends after all, but there is a strange phenomenon that caught Zhang Chunsheng's attention, that is, many sunny days in October seem to rain. "We also knew that it was sunny and rainy here before, but we didn't delve into the reasons. Now that I think about it, these findings seem to have some similarities, but I don't know if it is coincidence or other reasons. " Zhang Chunsheng said.

1993 10, Wulong Mountain Scenic Resort Scenic Area was rebuilt in Foye Cavern. When the construction started around 10 in the morning, it rained in Mao Mao in mid-air. At that time, people have noticed and seen that there are no clouds in the sky. At that time, someone laid linoleum paper there, and sure enough, shiny little water droplets appeared in a short time.

1995 10 when a mayor surnamed Liu from Dandong went up the mountain to inspect the construction of scenic spots, it was also clear in Wan Li when passing through Foye Cavern, but there was still drizzle falling down gradually. At that time, Mayor Liu also improvised a poem: "The holy spring moistens the heart, so why climb to heaven? The picturesque scenery is endless, and the phoenix dances and dragonflies between heaven and earth."

Is it only in October that there will be a spectacle of sunny rain here? Does sunny rain have anything to do with seasons? The staff of Wulong Mountain Scenic Resort Scenic Area said that they also saw some frost on the steps here in winter. Some local people who also come to the mountains often say that they have seen sunny days and rainy days in spring and summer.

There are rain trees in South America that will rain. Are the sunny days in Wulong Mountain Scenic Resort scenic spots caused by trees?

Since it rains all year round, what is the reason? Someone put forward a guess, is it because the fog on the leaves is heavy, dew may be produced in the morning, and the water droplets on the leaves form sunny rain? In order to verify the possibility of this statement, the staff of Wulong Mountain Scenic Resort Scenic Area observed for several days and found that it was raining all day under the tree. Even in the afternoon, when the relative humidity is particularly low and there are no water droplets on the leaves, raindrops still float down.

Wherever it rains, trees are planted everywhere. Is it related to the kind of trees? According to relevant data, in some tropical areas such as South America, there is a kind of "rain tree", which is about 24 meters high and has a flat-topped umbrella crown with a maximum expansion area of 30 meters. The reason why this tree rains lies in its strange leaves. The leaves of the "Rain Tree" about 40 cm long are bowl-shaped, and the liquid falling on the leaves will gather together. At night, the leaves will be rolled up and wrapped in the accumulated liquid. When the temperature is high during the day, the leaves will slowly disperse, and the accumulated liquid will overflow the leaves, forming a "rain" phenomenon. According to reports, a leaf of this tree can gather about half a kilogram of liquid at most.

There is also a tree called Taxus chinensis, which has developed roots and strong water absorption capacity. If there is a well not far from the tree, the surrounding water is abundant, the stronger the sunshine, the more water evaporates, and the small and smooth leaves float down, forming a natural landscape in sunny and rainy days. Moreover, the water is absorbed by yew and evaporated, which also has corresponding medicinal functions, so folklore regards yew as a tree god to eliminate disasters and diseases.

As for the speculation about the influence of trees, Zhang Chunsheng also thinks it is unlikely. He told reporters that there are no maple trees, wax trees and oak trees mentioned above in sunny and rainy places.

Is it the special geographical environment here that leads to the meteorological wonders in sunny and rainy days?

Some people doubt whether the reason for excluding tree species can be explained from meteorology. There are certain conditions for the formation of rain. When the water vapor in the air condenses when it meets cold and gathers to a certain extent, it will fall due to the action of gravity. It won't rain on a really sunny day. Is it possible that the local microclimate is formed by the special geographical environment here? Zhang Chunsheng, who graduated from the Air Force Meteorological College and worked in the Aviation School for seven years, once served as the deputy director of the Meteorological Observatory, thinks that although warm and humid air convection will condense and raindrops will fall halfway up the mountain, this possibility is very small. Especially in the autumn of June 5438+ 10, the relative humidity will be relatively low, and this is even more unlikely. Only when the humidity is foggy and evaporation is particularly rapid, the humidity will rise to a certain height and cool rapidly, thus forming rainfall, but it will not happen in an area of about 3 square meters.

In addition, from the current observation results, the vegetation coverage rate here is above 95%, which is very lush and the water content on the ground is relatively large. It is likely that the vegetation roots of several surrounding trees grow on the waterline, and the groundwater is rich, and some water overflows from the branches. Zhang Chunsheng said that they are still observing the sunny and rainy days, and they are still waiting for the leaves to fall out to see if it will rain.