Bang Bang ... Wenzhou launching "artillery shells" in many places to welcomes Ganlin

Zhejiang News Client reporter You Jianming Video Chen Yitong Correspondent Lin Zewei

Bang Bang ... It continued to be high temperature and hot weather, and today Wenzhou ushered in a timely rain. There is a group of busy figures behind this timely rain. How do they know how they rainfall, and do you know the problems of manual rainfall?

From 9:00 to 17:00 on August 2nd, Wenzhou launched 14 rounds of rainfall operations, launching 40 rainfall rockets, and 10 burning smoke bar. Under the dual action of natural rainfall and artificial rainfall, the scope of rainfall and a long duration of this rainfall is very beneficial to reducing the grade of forest fire danger, alleviating the current drought, increasing water storage of reservoirs, improving soil conditions, and promoting agricultural production.

Since the "Ome", Wenzhou has the characteristics of "large strength, large number of days, and wide range" this year, and has "extremes". Taking Wenzhou City as an example, as of August 1st, 31 days of high temperatures above 35 degrees, 21 days more than the same period (9 days); 10 days above 38 degrees, compared with the same period of the year (1 day), partially partially partially partially partially partial (1 day). 9 days; 3 days above 40 degrees, only 1 day in history. Among them, the highest temperature in Wenzhou urban area on July 23 reached 41.8 degrees, and the highest temperature in Wenzhou reached 42.9 degrees (Yongjia). The double refresh history has a hottest history and became the hottest day.

In order to cool down and relieve the heat and alleviate the dryness of the weather, the Wenzhou Meteorological Bureau regards artificial rainfall as the current key work, pays close attention to the weather changes, and carefully analyze and judge. According to forecasting and analysis of the meteorological station, affected by the east atmosphere, from August 2nd to 4th, Wenzhou will have a better rainy weather process. After active coordination and careful preparation of the Weather Office of Wenzhou City, it was decided that the city to organize the organizational ground artificial rainfall operations on August 2.

On the morning of August 2nd, nine people in Wenzhou, Yongjia, Yueqing, Dongtou, Ruian, Pingyang, Wencheng, Taishun, and Cangnan launched rain increase operations in a timely manner. At the same time, the continuous operation of Yueqing and Yongjia ground iodide cigarettes.

[Zhejiang News+] Do you know about artificial rainfall?

At present, there are 9 shadow operation teams in Wenzhou City, and 24 individual workers affect weather operation points, including 18 ground rocket operating points and 6 smoke furnace operating points, and 91 operators. In 2021, the city of Wenzhou carried out a total of 59 sharing rockets, 26 smoke furnace operations, and consumed 393 rockets, with a total of 23.42 million tons of water increase. The annual operating volume was first in the province. Director Zheng Haixiang for you

Q1: Why do you want to carry out artificial rainfall?

"Artificial rainfall" was called "artificial rainfall" in the past. In fact, the saying "artificial rainfall" is unscientific, because natural rainfall requires certain weather conditions, it is difficult to create "rainfall", but it can meet the rainfall conditions. Under the premise, artificial intervention, increasing precipitation, and improving precipitation efficiency, so it is called "manual rainfall". This also explains why there are harsh climate such as droughts such as droughts, but they cannot carry out "manually rainfall" as soon as possible, but they must carry out artificial rainfall under rain. Because if it does not meet the rainfall conditions, there is no rain to increase it.

Q2: What is the principle of artificial rainfall?

Natural rainfall must meet 3 conditions: one is to have sufficient water vapor in the air, and the other is to have the air rising movement, and the third is that there must be condensation of water supply and steam condensation in the cloud.

As long as all three conditions are available, natural rainfall occurs. Artificial rainfall is mainly to intervene in the tuberculosis, sprinkle the crystal agent (such as silver iodide) into the cloud layer, increase the ice crystal concentration in the cloud, make up for the lack of coagulation tuberculosis in the cloud, increase the amount of rainfall, and improve the efficiency of precipitation.

Q3: Will iodide affect the water source with the rain?

Don't worry, there are also iodide in nature, and the iodide content used in artificial rain increases is very small. Even if it is melted into the water, it will not affect the water quality. After the scientific sampling Drinking standards stipulated in the state.

Q4: What are the operations of artificial rainfall?

At present, there are 4 ways to rainfall the rainfall, aircraft, rockets, high guns, and smoke furnaces. The city is mainly rockets and supplemented by smoke furnaces.

The artificial rainfall of the aircraft is the best way to sow catalysts in the cloud, which is suitable for continuous rain increase operations for layer -shaped precipitated cloud systems. A silver iodide carried by the aircraft is approximately equivalent to the dose of a dozen rockets. The aircraft operation is strong, the area of ​​catalysis is large, and the rainfall effect is good, but there are many restricted conditions in this way. The artificial rainfall of the high gun is to launch a shells to the cloud. When exploding in the cloud, the catalyst is scattered. At the same time, the impact vibration generated by the explosion also plays a certain role in hail removal. There are many relative applications in the northwestern region of my country.

Rockets are artificially raining, which uses rocket launch racks to fire rockets containing catalysts in the air. After the rocket bounced in a cloud -reaching cloud at a height of seven or eight kilometers, the catalyst was automatically ignited. As the Rockets flew along the way, the "line source was scattered" and spread with the wind. Rockets have the advantages of convenient transportation and strong maneuverability, and the rainfall catalytic effect is also very good. However, it is necessary to apply to the air management department in advance due to the restrictions on the use of the airspace to avoid affecting the safety of air routes.

The artificial rainfall of the smoke furnace is to burn silver iodide in the ground smoke furnace operation. Through the air rising, the silver iodide is brought to the air to achieve rainfall effect. However, the setting conditions of the smoke furnace operating point are relatively strict, which is generally suitable for the operation of the topographic clouds in the mountains.

Q5: Is it safe to increase artificial rainfall?

Comprehensive consideration of limited conditions and rainfall effects, the city mainly uses rockets to artificial rainfall. The launch angle and height should be set according to the weather conditions, and manual rain increase operations are implemented at the designated operating point. Generally, rocket operating points are selected near the reservoir and river, so that the increased precipitation can be directly converged to improve the utilization rate of rainwater. When the rocket operating point is selected, the crowd's dense places and important facilities will be avoided. Under normal circumstances, after the launch, the rocket will explode in the air and destroy, but it is inevitable that occasional rockets will not be sufficient to self -destruct. If the citizens find the rocket bounce wreckage, please report the local government and meteorological department as soon as possible. If you find the rocket bounce, please do not panic. The artificial rainfall rocket bounce wreckage will not explode and is not toxic, but if you are considering safety, please do not get close or dismantle yourself.

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