The basic meaning of graphics

China's figure originated in the era of planned economy, when politics was at the forefront. At the 1956 Supreme State Conference, when discussing and passing the 1956- 1967 National Agricultural Development Program, in response to the call of the older generation of meteorologists, Mao Zedong said: "Artificial rain making is very important, and I hope meteorologists will make more efforts."

Yi Shiming, 86, was once the deputy chief engineer of China Meteorological Bureau. He remembered that the first artificial rainfall operation in China was the Jilin drought in 1958, with a vice governor in command and Soviet experts helping to make dry ice, thus completing the aerial seeding operation.

At this time, it has been 12 years since the first artificial rainfall experiment in the world. Since then, the state has sent researchers to study in the Soviet Union, and shadow work has also begun to be linked to political tasks.

At the beginning of 1960, a large number of meteorologists were sent to Shanxi to escort Dazhai agriculture. Zhang Jihuai, a researcher at the National Film Center, spent two years in Dazhai, and arranged three hail defense lines around Dazhai. Once a "weather system" passed by at night, and an old local forecaster thought it was impossible to hail by experience, but it did. This was originally a technical mistake, but it was finally treated as a political issue, and the parties were considered to be "politically conscious".

It was the revolutionary passion era of "man can conquer nature", and the role of characters was exaggerated. "In some of the earliest articles, some leaders always said that the weather was artificially controlled, and later it was changed to manually control the local weather. It is more realistic now, saying that it is artificially influencing the weather. " Zhang Jihuai recalled.

Shadow jobs are also blooming everywhere. 1964, except Tibet, artificial rainfall was carried out all over the country to prevent hail, and the number of times reached 3606. "We are eager to fight drought and ignore the scientific nature. There are many experiments, few scientific data and blindness. " Summary of the fourth national conference on artificial precipitation enhancement.

In contrast to radical attempts, the cultivation of scientific and technological strength lags far behind. Until 1972, there were only about 100 professionals in China, and there were no professional planes. With frequent accidents, in 1970s, 4 10 people were injured and 169 people died in shadow work accidents. Central weather bureau has issued safety announcements twice, but the casualties have not been eliminated.

This situation eventually leads to the development of the figure falling into a trough. 1980, central weather bureau stopped shadow work all over the country, and radar stations and shadow offices in many places were cancelled.

The connecting flight occurred in "1987 Daxinganling fire". We worked there for more than a month and played a key role in the fire fighting. The People's Daily reported it. After that, there is still room for development in the figures of the provinces. "Wang Guanghe, deputy director of the Shadow Center, recalled.

Finally, a four-level administrative system of "state-province-city-county" was established. 1993 set up a digital coordination system, and 13 ministries became member units. In 2007, the National Shadow Center was established. "The shadow business needs reform"

While the artificial rain suppression in Beijing Olympic Games has achieved great success, there are still some old scientists who question the effect and demand accurate effect data.