Tang Yuting naturally sat in the passenger seat, fastened her seat belt, and then said: "Didn't we agree? Go to Longmen Town and wait for Dr. Gao to come."

Li Xuan blinked his eyes, "If you are coming from Yangcheng and are not familiar with our location, you must first take the expressway to Star City and then come back to us. This journey will take at least two or three hours."

"Didn't we agree? Let's go over and wait for him first, so that we can show that we value him." Tang Yuting smiled at Li Xuan.

For a moment, Li Xuan was slightly distracted. Looking at Tang Yuting at this time, she really felt like she was laughing like a flower.

But soon, Li Xuan came to his senses. He started the car and said, "Okay, I'll take you to the boat for a tour, and then go to the old street to have something to eat. That's about it. Doctor Gao will be here soon."

Tang Yuting nodded slightly in agreement.

The car drove at high speed on the village road.

Tang Yuting lowered the car window slightly, and then said: "Brother Xuan, drive slower."

"What? Are you worried about my driving skills?" Li Xuan relaxed on the accelerator with some confusion.

"No, I just want to take a closer look at both sides of the road after the typhoon." Tang Yuting sighed.

By this time, the typhoon had passed for several days.

The water has receded long ago.

The roads have also been cleared.

But there was still a mess on both sides of the road.

When a typhoon passes by, it can really be described as not even a blade of grass grows.

On both sides of the road, many windproof trees had been uprooted and fell straight down on both sides of the road. It looked really dilapidated.

Li Xuan looked out the car window. Not far away, there was a big tree that was larger than the waist of an average adult man. It was lying on the side of the road. Its huge crown and huge rhizomes made it look like a dumbbell.

.

It may take more than ten years or even longer for such a big tree to grow.

But in a typhoon, I don’t know how many people fell down.

Li Xuan sighed quietly, "Our place is a plain, and even the mountains are mostly short hills, which is pretty good. If the mountains were steeper, encountering such a big typhoon would definitely cause mudslides, flash floods, etc.

A series of subsequent disasters."

Tang Yuting pointed to the big fallen tree outside and asked, "Brother Xuan, are these trees just left to fall like this and no one comes to clean them up?"

"Someone will definitely come to clean it up. Not only will it be cleaned up, but it will also be re-greened, but it will definitely not be in a short time." Li Xuan said.

Tang Yuting nodded, "Yes, there will be strong winds for a long time after the typhoon, and there will be intermittent heavy rain for a long time. It is really not suitable for cleaning now."

Li Xuan nodded slightly. The generation of typhoons is related to both thermal conditions and dynamic conditions. Changes in these two conditions will change the number and intensity of typhoons.

When the tropical atmospheric vortex rotates violently around the center of low pressure, it will be affected by the friction of the rough and uneven ground after it lands, and the wind force will be greatly reduced. This is what is usually called the passage of a typhoon.

But in fact, the passage of a typhoon does not mean that the typhoon is completely over.

Many times, although the wind has stopped on the ground, strong winds are still blowing around the low pressure center at high altitudes.

The hot and humid air from the ocean is still rising and condensing, constantly producing raindrops.

If moist air encounters a mountain, the windward slope of the mountain will force it to rise faster and condense, and the heavy rain there will be even more severe.

And some typhoons will bring very special spiral rainbands to the places they pass through.

Spiral rainbands are one of the main features that distinguish typhoons from extratropical cyclones.

At the same time, it is closely related to one of the main disasters of typhoons, heavy rain.

Spiral rainbands are a very special type of weather in typhoon weather. They are rare, but they are not unheard of and must be guarded against.

【In view of the general environment,

Scientists have studied that spiral rainbands have some characteristics similar to gravitational inertial waves.

The water vapor in spiral rainbands mainly comes from below one thousand meters, and the air from the outside has obvious convective instability, which provides unstable energy for the development of spiral rainbands.

The air inside the spiral rainband belongs to neutral stratification, indicating that unstable energy has been released.

The pressure gradient force in the convergent airflow outside the spiral rainband accelerates the airflow to form a mesoscale strong wind belt outside the spiral rainband.

At high altitudes, the heterogeneous nucleation of ice crystals is very active, and the ice crystal conversion rate is several times higher than that of heavy rain on the typhoon eyewall. However, the ice crystals grow into snow through the Bergeron process, and the snow grows into graupel through sublimation. The process is relatively different in the typhoon eye.

The wall is very weak, and the microphysical mechanism for the formation of rainwater in spiral rainbands is mainly based on the melting of graupel particles into rainwater.

There is a strong internal flow in the low level outside the spiral rainband. The airflow enters from the low level outside the rainband. The strongest internal flow is located below a thousand meters altitude.

There is obvious outflow inside the rainband.

The two airflows converge in the strong echo area of ​​the rain belt, and water vapor converges and rises here. This dynamic structure plays an important role in maintaining heavy precipitation.

In addition to possible rainfall, there are many other safety hazards in the period after a typhoon.

Like this county road, after heavy rains, many roads in mountainous areas have become fragile. Fortunately, this is a plain. If it were a mountainous area, landslides and road collapse would occur in many places.

Even in plains, there are hidden dangers of geological disasters such as landslides, mudslides, and riverbank collapses in some places.

Therefore, there will be no one on both sides of the road, and people will come over to clean up immediately after the typhoon.

In the few days after a typhoon, you are not allowed to go into dangerous and unfamiliar places. If you are not careful, you may be in danger of falling into a mountain stream, including people and vehicles.

Therefore, it is best not to drive into the mountains at this time.

If you have to go into the mountains, you should pay attention to check the road conditions.

Even if it is just an ordinary outing, you should try to avoid going to illegal temporary buildings and dangerous buildings for the time being.

Or it is located next to loose mountains, on streams and rivers, and other business sites with greater safety risks. At the same time, beware of outdoor billboards, building exterior wall decorations and other facilities that are easy to fall off.

After entering the business premises, pay attention to safety issues such as slippery floors and stairs.

When walking on the road, pay attention to the accumulation of water on the roadside. Do not wade through some places with deep water without hesitation, because there are usually sewer lines and other pipes buried on both sides of the road. When the manhole cover is lost, if you step in rashly,

It may hurt yourself.

In addition, after the typhoon passes, many people who have been relocated will be eager to go home to check the damage situation.

In fact, there is a certain danger in doing so, and after returning home, it is best not to check the gas, circuit, etc. at will to prevent accidents.
Chapter completed!