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For this purpose, the aircraft can spray into the atmosphere quantities of sulfur dioxide (SO2) which constitute a reflective layer, such as mirrors facing the sun, known as aerosol injection into the stratosphere or solar opacity.
"I think the idea of stratospheric geometry will be much cheaper than reducing greenhouse gas emissions to reduce temperatures," said Kate Rick, a professor at the University of California at San Diego, who studies climate change and policies to address it.
"It makes sense to me," Ken Caldera, Senior Scientist at Carnegie Endowment for Science told Life Science.
If sulfur dioxide (SO2) is released into the atmosphere, the light will be reflected in space, he said, noting that the gas was cheap and available.
Wick Smith, a study associate and lecturer at Yale University, said that the essential cost of the project would be to increase enough the level of sulfur dioxide to allow it to revolve around. Earth.
"If you deploy materials at 35,000 feet (10,700 meters), it will rain in a few days, by gravity," he said. "If you get gas in the stratosphere, it will remain stuck for a year or 18 months." Will contribute to the reduction of the temperature of the planet during this period.
However, this does not diminish global efforts to reduce greenhouse gas emissions because they not only increase the temperature, but also destroy the ecosystem, Smith said.
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