If humanity wants to completely avoid the mostthe terrible effects of global climate change, we need to stop using fossil fuels and move to more environmentally friendly alternative energy sources. Progress in this direction is already there, but it is going very slowly. At the same time, there are groups of specialists who offer to pay attention to a more technological solution that can help us in the fight against global warming - geo-engineering.
One of the factors that if not increases, thenat least stimulate the growth of the average temperature on the surface of the planet, is sunlight. Earlier, assumptions were made that reducing the amount of incoming light may contribute to the cooling of the planet. How to do it? With the help of special aerosols sprayed in the atmosphere.
Researchers from harvard universityMassachusetts Institute of Technology and Princeton University decided to find out what negative consequences can result from intentional emission of aerosols into the atmosphere to reflect sunlight and reduce the growth of global warming.
For this, experts have developed a climatemodel of extreme rainfall and tropical cyclones to determine the effect of geoengineering in different regions of the Earth. With the help of a new model, scientists were able to determine the extreme values of temperature and precipitation, the availability levels of fresh water, as well as an indicator of the intensity of natural disasters, in particular hurricanes. Detailed research results published in the journal Nature Climate Change.
It turned out that reducing the growth of globaltemperatures in half due to the intentional release of aerosols will cool the planet, mitigate changes in water supply and precipitation levels in many places, and also offset more than 85 percent increase in natural disasters. At the same time, the negative consequences of the use of geoengineering will be observed only by 0.5 percent of the planet’s territory, the researchers note.
According to experts, the results of their workrefute the view that aerosols can significantly worsen the climate situation and lead to even more serious consequences in the most exposed regions of the planet. Researchers agree that more radical emissions of aerosols can lead to even more serious problems. But to avoid this or minimize the likelihood of negative effects will help correct calculation of permissible volumes of emissions of aerosols into the atmosphere.
As noted above, another way toavoid catastrophic effects of climate change, is to immediately reduce greenhouse gas emissions. However, many scientists believe that humanity has almost no chance to avoid a climate catastrophe caused by the increase in the average temperature of the Earth by more than 1.5 degrees. Even solar engineering will not help to completely stop the warming on the planet. It is really capable of reducing its negative effects, but the problem can be finally solved only in the case of an extremely unlikely scenario - the complete abandonment of the operation of all power plants, factories and even cars.
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