Scientists propose spraying chemicals into the atmosphere to reduce climate change

David Archer from the Department of Geophysics at the University of Chicago told CNN: "The biggest problem of climate change with technology: it's just a temporary temporary bandage covering a problem. will exist forever ".

When we see scientists suggesting against climate change by spraying chemicals into the Earth's atmosphere, we will think of the cluster of "overdose". They say that by "aerosol injection on the atmosphere - stratospheric aerosol injection (SAI)" , we can reduce the rate of global warming by half.

This study was proposed by scientists at the top two universities of the US, Harvard and Yale. They have a detailed study published in Environmental Research Letters. Specifically, when firing aerosol particles (colloidal systems of solid particles or other liquid, air or gas droplets, the example of natural aerosols can account for fog) to a height of 19 km in the atmosphere.

This is an artificial "aerosol".

Placing aerosols will be done by airplanes, airships or long-range material guns. Sounds like a fantasy movie right? Right. Even in the report, scientists confirmed that the SAI technique is still a paper-based study.

However, they are still confident that within the next 15 years, they will develop successfully and apply technology to Earth at that time. The cost of launching SAI system will be about 3.5 billion USD and the operating cost will be about 2.25 billion USD per year.

The research team also stated that they have not taken into account all the risks that FALSE can bring. It is possible that the anti-climate change by chemical method will cause global agriculture to be affected, making the climate more extreme and eventually, famine will rage.

Professor Gergot Wagner from Harvard University, co-author of the study, said: "Based on the possible benefits from the ambitious project, the resulting numbers will create a" strong economy ". obtained by solar chemistry engineering - climate change with high technology and chemical interventions ".

"A lot of countries can fund a program of this type, but the technologies needed are not too high . "

There is a technique that SAI does not solve the greenhouse gases that are being released regularly as well as available in the atmosphere - that is the main factor that causes the Earth's climate to change.

The SAI technique does not solve the greenhouse gases that are being released regularly as well as available in the atmosphere.

And the scientific report, though detailed in many ways, does not convince all individuals to read it.

Philippe Thalmann from the Federal Institute of Technology École Polytechnique Fédérale de Lausanne, a climate change economic expert, said the system will be very expensive and "the longer term, the higher the risk".

David Archer from the Department of Geophysics at the University of Chicago told CNN: "The biggest problem of climate change with technology: it's just a temporary temporary bandage covering a problem. will exist forever ".

Professor Archer concludes: "If the future generation does not seek to solve the climate problem, it will all suffer from a catastrophe happening at the same time on a global scale."