In the second half of the XX century, humanity beganactively throw so-called chlorofluorocarbons into the air. These substances were used in old refrigerators and various aerosol cans. It turned out that they are extremely dangerous for our planet and gradually destroy the ozone layer, which protects us from harmful solar radiation and prevents global warming. To stop the destruction of the upper atmosphere, the countries of the world adopted the Montreal Protocol in 1989 and banned the use of chlorofluorocarbons. As it turned out, such a decisive step on the part of humanity was made not in vain. Perhaps this way we prevented one of the likely climatic disasters.
This, at least, is said by the Australianscientists from the University of New South Wales in an article published in the scientific journal Environmental Research Letters. In their new study, they conducted a computer simulation of various scenarios of the emergence and development of climate change. In particular, they checked what would happen to our planet if the Montreal Protocol were not accepted. It turned out that if manufacturers of refrigerators and aerosols had not stopped using chlorofluorocarbons, noticeable changes would have occurred on Earth.
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What will happen to the Earth without the ozone layer?
It is worth mentioning right away that the researchersdecided to launch a scenario where emissions of chlorofluorocarbons not only did not stop, but also increased by 3% annually. By establishing this factor and running the simulation, scientists found that the projected increase in planet temperature in 2050 would be much higher than it is today. Moreover, it became extremely clear that without the signing of the Montreal Protocol, humanity would not have been able to reduce the area of a large ozone hole over the territory of Antarctica. But according to NASA, the decrease was significant, if in 2000 the hole area was 24.8 million square kilometers, then by 2019 it is only 9.3 million square kilometers.
According to climatologist Rishava Goyala, countrieshave entered into the right contract because fluorocarbons are more powerful greenhouse gases than regular carbon dioxide. He believes that an international agreement not only helped eliminate the ozone hole, but also slowed the onset of global warming.
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The work done by Australian scientists is excellentdemonstrates the benefits of the Montreal Protocol. This agreement is a good example of the fact that common efforts to limit the amount of harmful emissions into the atmosphere of our planet are really effective. Perhaps someday the countries will reunite and develop a new plan to mitigate the effects of the rapid rise in temperature on the planet.