Curious | Cold knowledge to cool down!Those things you don't know about manual rainfall

It has been cool and drought in many places. On August 16, the Nanjing Meteorological Bureau issued an announcement that it would rain in the six districts of Liuhe and Pukou. As of 23:00 on the 16th, the meteorological department has carried out artificial rainfall operations in the Liuhe area. The Pukou area is still paying close attention to the weather conditions and waiting for the opportunity to rainfall.

Artificial rainfall is a familiar and unfamiliar topic for many friends. Why not rainfall? Why did it increase after so long? Why do you choose more rainfall from the main city? Where did the special rocket increase, where did the shell and the rocket shell go? Curious, use cold knowledge to cool you down!

In the early morning of August 16th, there were some short -term heavy precipitation and thunderstorms in the western and northern parts of Huai'an City. The meteorological department of Hongze District seized the opportunity and implemented manual rainfall operations in Xishunhe Town. Picture source: Visual Jiangsu Special Photography Chen Kai

Artificial rainfall becomes artificially raindous?

In the face of nature, human beings can never do whatever they want. What needs to be clear is that although there are many scientific and technological means to help us affect the weather, manpower is limited after all. You know, there are certain conditions to achieve rainfall through human intervention, that is, there must be clouds. Therefore, all we can do are manually raining, not rainfall out of thin air.

If you want to increase artificially, if you want to increase?

"It's hot, it's about to die, and it is urgent to increase rainfall!" Facing the thousands of calls of netizens, is it the meteorological department visible and disappointed? Nothing. Let's first understand the basic principles of artificial rainfall.

The basic principle of artificial rainfall is actually very simple, that is, the catalysts are used through rocket bullets and other methods into the over -cold water areas in the clouds, so that the over -cold water is condensed into small ice crystals and drops, forming rain. For example, a cloud with rich cold water is a warehouse. The meteorological department takes out the cold water from the cloud through technical means. Therefore, there is no cloud in the sky, and artificial rain increase operations cannot be implemented.

Only one cloud is lacking in rain?

Even if there is a cloud made in the wind, "not all clouds can meet the rain increase conditions. The thickness that can achieve rainfall is greater than 2 kilometers, and there is still abundant cold water inside, that is, water below 0 ° C but not frozen, and water vapor supplement. When these catalysts are placed in the clouds that meet the conditions, the effect of tofu similar to brine can appear, producing rainfall.

Will it rain artificially rainfall?

The answer is not necessarily! After artificial rainfall operations, there will be rainfall in the cloud. During the landing process, some small ice crystals will evaporate directly and cannot reach the ground to form effective rainfall. Generally, the effective time is about 3 hours, and sometimes it will reach 6 hours.

In addition, there is a dumb bullet after the artificial rainfall rocket was launched. If it is found, please ask the citizens not to approach, and immediately report the manual affecting the weather office, the local government or police station.

Will artificial rain increase the weather?

The weather phenomenon caused by the strong convection weather is a strong pair of stream. The principle of artificial rain increase operation will not cause the phenomenon of the current. Not only that, if the artificial rain increase operation, if the strong convection weather is encountered, it will also rise to the strong rise. The airflow plays a role in suppressing, just like a highway, a high -speed car will block the wind blowing on the face, but this inhibitory effect is too limited, but the wind has a much impact on the driving of the vehicle, so Our artificial rain increase operations will avoid strong streaming areas.

Can't artificial rainfall in the main urban area?

Many friends noticed that the scope of the artificial rainfall in Nanjing is mainly in the two districts of Liuhe and Pukou. So does it mean that the main urban area cannot be manually rained?

Usually, we divide the influence area of ​​manual rainfall into two. One is the operating area and the other is the beneficiary area. For some main urban areas, we will not set up a work area in the main urban area due to considering safety issues, but we can use the operation to go through the operation. The downstream effect is to make the urban area benefit as a beneficiary area, and through the precision calculation of the meteorological department, the benefit will be maximized.

What are the ways to increase rainfall?

At present, the manual rainfall method is mainly aimed at the target cloud system. Choose the right time. Through rockets or high guns, alpine smoke furnaces, sowing catalysts such as iodide, dried ice, and salt powder to the clouds, so that cloud layer precipitation or increase precipitation. The aircraft mainly implemented mobile operations for stable layered clouds in spring and autumn, while the summer weather system is unstable, and the conditions are not difficult to implement. Ground rockets and high guns generally work in places far from town and villages.

Where did the shell and rocket shell go?

Rockets artificially affect weather operations. It is the target cloud that uses a certain condition in the air to use a certain conditional target cloud to launch a rocket containing a catalyst in the air. After the Rockets reaches a certain position in the air, the catalyst in the rocket bullet is automatically ignited. As the rocket is rocket, as the rocket Flying in the cloud, the catalyst was burned along the way to affect the physical process of the cloud.

Under normal circumstances, the shell's warhead will explode into very small fragments in the air, and the rocket will explode in the air to destroy or fall to the ground through the parachute. In order to ensure safety, it will avoid the population -intensive area and important facilities during the operation and launch to the open area. If a citizen friend finds a faulty bomb that has not exploded or unacceptable, please contact the local public security or meteorological department for processing, do not handle it without authorization, let alone take it home.

Comprehensive China Weather Network, People's Integration Media, China Net Inspur News, Nanjing Meteorological

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