China has been dealing with targeted weather changes for several decades. The country has reportedly manipulated rainfall to reduce pollution and protect crops. According to a study by the University of Beijing, cloud seeding technology succeeded in 2021, just before the large political celebrations.

Cloud Seeding in China

China has invested millions of dollars in a technology called cloud-seed. Weather modification has been in her interest since the 1980s. The government believes these efforts have helped the country improve important events or protect its crops.

By Naomi E Tesla – Own work, CC BY-SA 4.0,

Cloud-seeding is the process of modifying the weather by applying chemicals to the clouds. The goal is to change the amount or type of rainfalls by adding chemicals to the clouds, such as silver iodide, potassium iodide, and dry ice (solid carbon dioxide). These substances cause water vapor to accumulate around them, which ultimately increases the likelihood of rainfalls.

Weather Modification to Reduce Pollution Levels

Cloud-seed technology has led to a massive reduction in air pollution, according to the report published in The South China Morning Post. The rockets applied silver iodide to the clouds and caused rain, which reduced PM2.5 air pollution by more than 60%. Wang Can, a professor of environmental sciences, said that “artificial rain was the only disruptive event during this period so that no natural causes can be attributed to the decline in pollution levels.”

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China’s State Council aims to develop a weather treatment system that includes hail suppression technologies by 2025. An official report from 2019 said that firing iodide grenades to slow the weather had reduced the hail damage by several tens of percent that occurs in Xinjiang every year.

One of the main events when cloud seed technology allegedly provided better weather was the 2008 Olympic Games. In July 2021, the Chinese Communist Party again conducted a large-scale cloud deployment operation just before the big political celebrations.

Featured photo by Billy Huynh on Unsplash