In China, scientists adjusted the weather so that the sky turns bright blue during a political celebration earlier this year. This is according to a study conducted by Peking University.
On July 1, the Communist Party of China celebrated its centenary. Before that, tens of thousands had gathered in Tiananmen Square. In the hours leading up to the event, meteorologists made it rain so that the sky turned blue afterwards, and the air pollution was less severe.
The Chinese government is a big supporter of cloud-making technology. Billions are spent on weather manipulation to help agricultural areas or make important events like the Olympics go better.
Cloud seeding, as this technique is called in English, involves adding silver iodide to clouds. Raindrops collect around the particles, making them heavier and more likely to fall.
Monday Southern China Morning Post wrote About a study conducted by environmental professor Wang Kahn which showed conclusively that before the centenary of the Party there was a sharp decrease in air pollution caused by the process of cloud seeding. Mountain residents witnessed rockets being fired into the air on 30 June. According to research published in the trade magazine environmental sciences The rockets featured carried silver iodide to stimulate precipitation.
The researchers reported that artificial rain reduced the amount of particulate matter (PM2.5) by more than two-thirds. Air quality has gone from “moderate” to “good” according to the WHO standard.
This sounds positive, but the technology is controversial. First, because China “grabs” rain from neighboring countries, which also suffer from droughts. Second, it is morally sensitive to interfere with the weather. Finally, precipitation is difficult to control and it is not clear exactly how safe it is.Watchman
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