Researchers from Harvard University plan to spray particles that reduce sunlight into the stratosphere to temporarily reduce the heating of the planet and use this technology to combat global warming..
The team of scientists intends to use controlled air probes to spray calcium carbonate at an altitude of 20 km above ground level. In the first move over the territory of the United States in the experiment, several small cylinders of the substance will be released. Tests are scheduled for the first half of 2019 and will cost $ 3 million. After spraying the calcium carbonate, the probes will deploy to observe the dispersion of the particles..
This experiment will be the first geoengineering experiment conducted outside the laboratory. It does not significantly affect the earth’s atmosphere…
Global warming can be combated by reducing the amount of light entering on the surface of the earth, reducing carbon dioxide emissions or absorption from the air. There is still a debate among scientists about the safety of geoengineering methods that affect temperature, as it affects the life cycle of plants, crops, weather, rainfall and much more. However, the amount of emissions continues to grow, in order to avoid irreversible actions, they begin to act..
The Harvard team says that the experiment is very complex and requires precise operation of probes, correct spraying and even particles of a certain size, so computer models of tests continue to improve. The main advantage of the technology is the temporary nature of the changes and relatively low costs for global application, since this calcium carbonate particles effectively effectively reflect sunlight for up to two years.
Earlier we wrote about the creation of an electrocatalyst that converts carbon dioxide into plastics, fabrics and resins..
text: Ilya Bauer, photo: Kayana Shimchak / Nature
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