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Experts around the world continue to look for new techniques to combat climate change. One of the latest attempts to reduce the effects of global warming is to use a sun-bleaching technique that has not been proven, which researchers say would reduce the effects of global warming on the Earth.
CNN reports that the recent study on reducing the effects of global warming was conducted by a team from Harvard and Yale Universities. The team described the sun-darkening technique of aerosol injection in the stratosphere, saying it could reduce global warming by 50%.
To achieve aerosol injection into the stratosphere, the lower atmosphere of the Earth, called the lower stratosphere, should be sprayed with sulphates extending over 12 miles. However, we still do not know how the chemicals would be delivered until then.
A non-existent spacecraft to lift chemicals
According to CNN, there are currently no aircraft meeting the needs of chemical transportation. However, the team behind the idea is enthusiastic about using balloons, stating that "the development of a new, specially designed tanker with substantial payload capacity would not be technologically difficult or prohibitively expensive.
The solar protection project could cost about $ 3.5 billion for the initial configuration, plus an additional $ 2.25 billion for annual maintenance over 15 years. According to this study, the price to be paid is considered "remarkably cheap".
Is it safe?
The researchers acknowledged that their technique had not yet been tested and remained hypothetical. Many people wonder if we really need more chemicals in our atmosphere. After all, dangerous chemicals in our atmosphere have so far done more harm than good by digging a huge hole in the hole in the ozone layer, for example.
Nevertheless, the team responsible for the study published in the journal Letters of research on the environment remains optimistic about their idea. Unfortunately, greenhouse gas emissions would remain a problem, even if the technique is useful.
"We are not making any judgments about the opportunity of the SAI," says the study. "We are simply showing that a hypothetical deployment program starting in 15 years, while being very uncertain and ambitious, would in fact be technically feasible from an engineering point of view. It would also be remarkably cheap.
Experts remain skeptical
Other experts are rather skeptical about this idea, saying that this study is more like a small bandage applied to a major problem.
"From the point of view of the climate economy, the management of solar radiation remains a much worse solution than greenhouse gas emissions: more expensive and riskier in the long term," Philippe Thalmann of the Swiss Federal Institute of Technology Lausanne, which works in the field of climate change economics, told CNN.
"The problem of engineering climate in this way is that it is only a temporary dressing covering a problem that will persist forever, namely hundreds of thousands of years." years for fossil fuel-derived CO2 to finally disappear naturally, "said David Archer of the Department of Geophysical Science at the University of Chicago said.
Although the light reduction technique is emerging as an innovative way to combat the effects of global warming, we can not forget the main cause of global warming, namely, high carbon dioxide and other greenhouse gas emissions. greenhouse effect. We can not blame the sun for our climate change problems as long as we continue to fill our atmosphere with dangerous gases.
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