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His idea would involve spraying large quantities of sulphates into the lower stratosphere up to 20 kilometers from the altitude.
Scientists say they would spray sulphates with the help of balloons or planes designed to reach high altitudes or large canyons. naval style. However, they let it be known that the technique is, so far, purely hypothetical.
There is no adequate technology or aircraft to carry out this experiment, but the team said the system could be created in the next 15 years.
The cost of launching the UPS system is estimated at $ 3.5 billion. (USD) with operating costs of $ 2.25 billion a year.
The report recognizes that it is a hypothetical deployment but that its creation is possible.
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We do not judge the opportunity of SAIs
We let's just show that a hypothetical deployment program starting at 15 years, although very uncertain and ambitious, would be technically feasible from an engineering point of view. It would also be very cheap.
The team recognizes that there would be an extreme risk with the system, as coordination between several countries in both hemispheres would be needed. In addition, they argue that SAI techniques could endanger agriculture, cause drought or extreme weather conditions.
million. Gergot Wagner, Harvard University School of Engineering, and co-author of the study, said:
Considering the potential benefits of halving the projected radiative forcing increases from the early 1980s. on a given date, these figures invoke the incredible economy of solar geoengineering. Dozens of countries could fund such a program and the technology required is not particularly exotic.
The proposals also do not address the issue of increasing greenhouse gas emissions, which are one of the main causes of global warming. 19659002] The votes against
Philippe Thalmann, of the Ecole Polytechnique Fédérale de Lausanne, expert in climate change economics, said the system would be very expensive and much riskier in the long run . [19659002] David Archer, Department of Geophysical Sciences, University of Chicago, said:
The problem of technical climate in this way is that it is only a matter of time. a temporary dressing covering a problem that will persist forever.
We will be tempted to continue to postpone the cleanliness of our energy system, but we will leave the planet as a support for life. If a future generation did not pay its climate bill, it would have all our heat at the same time.
The project has not been approved by a government or authority, and further studies would be needed to verify its validity.
The research was published in the scientific journal Environmental Research Letters, with information on Panama On.
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