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When Lucifer was bored this morning, he touched his chin and thought: "That said, this thing is really amazing. You said that the storm that I sent was cursed. How can I live without seeing the dead?" No, it’s all the people in the whole country who might be hostile to Hong. They didn’t find anyone who was hit by the storm. Is this curse invalid? Or is my curse power losing effect? ​​It doesn’t seem like big. ... Could it be that there is something strange about Hong Dali? Well, it is possible. This Hong Dali is really amazing to say..."

......

"Auntie," Hong on the deck of the Big Fish sneaked a sneeze and touched his nose. "Who is this who chanted me?" He said and sneezed again: "Auntie, one hundred years old." His grandmother, this weather is also very warm, how can I sneeze?"

......

The butterfly effect, also known as the topological chain reaction, refers to the long-term huge chain reaction of the whole system in a dynamic system under the initial conditions. This is a chaotic phenomenon. There are fixed numbers and variables in the development of any thing. The development track of things in the development process has regular rules, and there are also unmeasurable "variables". A small change can affect the development of things, indicating the complexity of the development of things.

And the magic of nature is here...

After Hong’s two sneezes were finished, he did not care about entering the big fish’s ship island and looking for Li Nianwei to sleep (don’t think about it. It’s looking for the thigh...), but his two sneezes. But it is not normal...

At this time, the Big Fish is on the route to the Bermuda Triangle. It is already in the tropical ocean. On the sea, there are often many weak tropical vortexes. In professional terms, this is the typhoon's embryo. "Because the typhoon has always grown up from this weak tropical vortex."

In fact, this is nothing, but the problem is. Hong vigorously hit two sneezes...

Just above the sea around his big fish, it is wide enough and tropical, the surface temperature of the sea is higher than 26.5 ° C, and the water temperature exceeds this value in a layer of water 60 meters deep. The vast ocean surface is the necessary natural environment for the formation of typhoons, because of the friction between the air molecules inside the typhoon. The average energy consumption is 3100-4000 cal/cm**2 per day. This huge energy can only be supplied by the latent heat released by the vast tropical ocean. In addition, the strong winds rotating around the tropical cyclone will cause the sea water near the center to tumbling. In the center of the typhoon where the air pressure drops very low, the surface of the ocean can rise upwards and then spread around. Then the sea water tumbling from the center of the typhoon.

Originally, such an environment is only likely to form a typhoon, and it is not certain that a typhoon will be formed.

Before the typhoon is formed, an initial disturbance is required, just like a spring oscillator. Without giving it a disturbance it will not vibrate.

And the two sneezes of Hong Dali are exactly the initial disturbance!

First there is a very weak tropical vortex around the big fish.

we know. The operation of any machine consumes energy, which requires a source of energy. The typhoon is also a "heat engine". It rotates there at such a huge scale and speed, consumes a lot of energy, and therefore has a source of energy.

The two squirting spurts of Hong Hong merged into the very weak tropical vortex, making the very weak tropical vortex slightly stronger, and starting very, very slow movement.

In this tropical vortex, the air pressure itself is lower than the surrounding area. After the two squirts of the Hong dynasty merge, the vortex moves, the air pressure gradually becomes lower, and the surrounding air swells with a large amount of water vapor flowing toward the center of the vortex. An upward movement occurs in the vortex zone; the humid air rises and the water vapor condenses, releasing a huge latent heat of condensation, which begins to cause the typhoon to operate.

When the Big Fish carrier advanced more than a dozen nautical miles, the tropical vortex affected by the two sneezes of Hong Hong had already formed a certain scale—a diameter of about twenty centimeters.

To say that the diameter of twenty centimeters, in the vast sea, is actually a smaller proportion of the hair on the top of the head, but we know that things are developing - just here is the tropical ocean, The water temperature is very suitable. The high temperature and high humidity tropical ocean surface supplies water vapor, and the air rises strongly, causing condensation to release latent heat. The typhoon has taken initial shape.

And just like this, this little vortex is not enough to cause any harm, it is likely to encounter a little bit of interference, it will disappear into the sea forever.

But the real problem is that at this time, it is a coincidence that just a sea breeze blows, which causes a more violent reaction - the sea breeze merges into the vortex, and the low temperature brought by the sea breeze increases The difference in temperature between the vortices, and the small tropical vortex became more and more spectacular - from a diameter of about twenty centimeters, quickly increased to about one meter.

At this time, this little tropical vortex, moving faster and faster, about an hour later, it just happened to be so unfortunate, moved to the latitude that is very suitable for typhoon - the formation of typhoon, there must be The Earth's rotation bias is large enough, because the eccentricity of the equator is zero, and gradually increases toward the two poles, so the typhoon occurs about 5 latitudes away from the equator. This tropical vortex is just above this latitude.

Due to the rotation of the earth, a force that changes the flow of the air is produced, called the "earth rotation bias". When the tropical vortex moves here, the effect of the earth's rotation makes it difficult for the surrounding air to flow directly into the low pressure, but rotates counterclockwise along the center of the low pressure.

At this time, this small tropical cyclone was a little bigger, and it has reached a diameter of more than two meters.

At this time, it still looks so small, like a small seed, slowly sprouting and growing up.

In this small tropical vortex, just above the weak low pressure, the difference in wind speed between the high and low air gradually decreases, and soon the upper and lower air columns act in unison, and the heat in the upper air rapidly accumulates, thereby warming up.

With the flow of the ambient air above the friction layer along the isobaric line, the warming effect of the high-rise is further completed. This small tropical vortex grows rapidly and becomes larger, and soon the diameter rises to three meters, four meters, five. Meter……

If it is just such a scale, it is obviously not enough.

The problem is that the sea surface here is illuminated by a day, forming a strong cumulonimbus cloud.

The little tropical cyclone passed, and because of the wind speed, it brought a lot of cold air. At this time, the hot air in the cumulonimbus rising on the sea surface, the cold air around the source is constantly added, and the heat rises again. This cycle quickly makes the air above the heat, the air below the cold, and the heat above. The evaporation of water vapor in the air expands the range of clouds.

At this time, this small tropical cyclone already has a diameter of nearly 15 meters. The expansion of the cloud belt makes this hot and cold movement more intense, and then the expanding cloud is affected by the geostationary bias and begins to gradually Rotate quickly.

The centrifugal force generated by the rotating air blew the air out, the air in the center is getting thinner and thinner, and the air pressure is getting smaller. Finally, this small tropical vortex is completely sprouted, grows up, becomes more and more mature, and finally It reached a diameter of nearly 30 meters and entered the initial stage of the typhoon.

......

US Meteorological Agency.

The staff were yawning boring and were talking about the events that took place in the world these two days.

"Hey, live, what have you seen in the two days of news? Our three national aircraft carriers formed a naval show, which is a rare large-scale action." A meteorological bureau staff boringly glanced at the screen, then rushed to the side Colleagues said.

"Of course, how can such a big thing not know," the colleague smiled and said: "It is a miracle to make such a big battle for a defeated family. Really, I feel a little fuss."

"That is, then it is just a defeated family. It is really too much to do this." The former man shook his head: "These people have nothing to do, wasting military money to play, it is really a lot of money to spend. After a trip to the sea, tens of millions of dollars will be gone."

"Do not worry about the high-level things," the colleague sat down on the sofa and looked at the satellite image. Suddenly, he was surprised: "Look, what is this?"

"Well? What happened?" The first one rushed over and quickly laughed: "A small typhoon, you are so scared."

"Oh, it's a little nervous." On the satellite cloud map, a typhoon with a diameter of 30 meters is moving toward the United States. However, for the people of the Meteorological Bureau, such a large typhoon naturally does not require them to worry about it. Under normal circumstances, such a small typhoon has not disappeared before landing, it has disappeared.

"Okay, don't do anything useless," the US Bureau of Meteorology came in at this time: "Have work!"

......

The people of the US Meteorological Administration did not care about this small tropical vortex. After all, it was too small, so small that everyone was too lazy to mention it.

And this little tropical vortex is still moving hard, growing...

Because the air pressure in the tropical low-pressure center is lower than the outside world, the surrounding air surges into the tropical low pressure. When the heat rises, it supplies more energy to the tropical low pressure and exceeds the output energy. At this time, the air in the tropical low-pressure rotates more vigorously, and the maximum wind in the center rises. The center air pressure is further reduced.

Finally, the maximum wind force near the center reached about 60 kilometers per hour. At this time, this small tropical vortex finally succeeded in raising one level, from the initial tropical low pressure of the seed to the tropical cyclone intensity. The weakest level of small typhoon.