"Hot" trending search rocket artificial rain brings a moment of coolness

Since July 2022, the high temperature weather in various places has been full of "fire", and the word "high temperature" has been on the hot search list of online platforms many times. With the official opening of the "three days of summer", I am honored that we have successfully "hand in hand" with the hot weather this summer.

According to data, from July 5th to July 17th, eastern Sichuan, southwestern and northern Chongqing, northeastern Yunnan, southern Shaanxi, northwest Hubei, southern Jiangsu, Shanghai, Zhejiang, etc. The highest temperature in the region exceeded 40°C, with local temperatures in Yanjin, Yunnan reaching 44°C. A total of 154 national meteorological observation stations in Yunnan, Guizhou, Sichuan, Chongqing, Qinghai, Gansu, Ningxia, Shaanxi, Zhejiang, Anhui, Jiangsu, Shanghai and Tibet reached or exceeded the July extreme value, and 61 national stations reached or exceeded the historical extreme value. .

In order to cope with the adverse effects of continued sunny, hot and high temperatures, artificial rainfall enhancement operations have been carried out in many places.

Artificial rainfall is to use the physical principles of clouds and precipitation to increase the size of cloud droplets or ice crystals to a certain extent by spreading rainfall agents (salt powder, dry ice or silver iodide, etc.) into the clouds. Falling to the ground to form precipitation, it is also called artificially increased precipitation.

There are many methods of spreading, such as aircraft spreading in the clouds, anti-aircraft guns or rockets shooting silver iodide shells into the clouds to explode, and burning silver iodide flame agents on the ground. Rocket operation is currently the most common type, mainly composed of flame agent and silver iodide catalyst. Using a simple launching device, the rocket can be launched into the clouds, releasing the silver iodide in the missile. At high temperatures, the silver iodide volatilizes into silver iodide molecules, absorbing moisture in the clouds, and achieving the purpose of rainfall. According to relevant statistics, artificial rainfall can increase rainfall by 10%-15% of the original amount.

Of course, the principle of artificial rainfall enhancement is essentially to supplement the necessary conditions for rainfall in nature. Moreover, on-site artificial rainfall enhancement operations must meet two conditions: first, the location near the operation point Clouds that are conducive to precipitation and conditions that are conducive to catalysis are needed. Secondly, when the target cloud appears, the air traffic control department can give operating time.

Many netizens have asked, will artificial rainfall increase pollute the environment? In fact, the amount of silver iodide used in the operation is small and the distribution range is wide. As long as the silver iodide is heated, it will form a large number of extremely fine (only one percent to one thousandth of the diameter of a hair) silver iodide particles in the air. Units The concentration of silver ions produced by volume is far lower than international and domestic water environment quality standards and will not have an adverse impact on the environment.

Generally speaking, artificial rainfall can effectively alleviate drought, moderate temperatures, and bring better comfort to people's lives.

Nowadays, there are more and more application scenarios using modern science and technology and intelligent technology. In March 2022, the country’s first artificial weather modification smart cabin experience area was opened in Tongliang District, Chongqing Officially completed and put into use. This smart cabin, which integrates meteorological science popularization and experience, was transformed from a retired Y-5 aircraft. This smart cabin experience is divided into three major areas: aircraft artificial rain augmentation VR, iron-wing palm wind and cloud figure knowledge, and elephant grand view science popularization display. If you are interested in artificial rain enhancement, you might as well go and experience it on site!