Artificial techniques that consist of methods like blasting aerosols might be the cause for numerous droughts and hurricanes. This means that a step to cool down the overall temperature of Earth might be a contributor to the increase in temperature or imbalance in the climate. This would more likely make the struggle for survival even worse for humanity as well as flora and fauna of Earth.
Recently there has been a hike in the proposal by many scientists to use geoengineering techniques to bring down Earth’s temperature artificially. The artificial manipulation of the earth’s climate to negate the effects of global warming by spraying sulphate based aerosols into the atmosphere. The aerosols that are sprinkled in the atmosphere form a reflective layer similar to that of a volcanic eruption which substantially blocks the sun and hence cools down the Earth’s surface.
Contrary to what scientists suggested earlier, the recent research conducted upon these new methods revealed that these aerosols could affect the overall climatic condition of our planet. This study was conducted by climate experts from the University of Exeter by the use of a computer simulated model. This computer-based model provided insight into the effect of spraying aerosols on an annual basis that will show up between the years 2020 and 2070. It also revealed that the aerosols being spread in one hemisphere of the planet could quickly affect the opposite hemisphere as well.
The scientists used advanced simulations to investigate the exact effects of hemispheric stratospheric aerosols being sprayed on the ocean model of North Atlantic tropical cyclone frequency. It was concluded that on the place with aerosols injected, the temperature would come down and reduce the number of hurricanes. However, the southern hemisphere of the same would face drastic changes like increase in droughts in areas like Sahel, which is a sub-Saharan Africa located at the southern periphery of Sahara Desert.
As explained by Dr Anthony Jones, lead author of the study and climate science expert from the University of Exeter, solar geoengineering that is based on a particular region might be a strategy with a very high-risk factor. This would benefit one region but deteriorate the climate on the opposite horizon. He further added that strict policies should be made to help solar engineering rise and provide an effective solution as compared to aerosols. The solar geoengineering proposed by the scientists to replace the aerosol techniques has unmatched effects on the Earth’s environment. The study also shows that aerosols might bring down the cyclonic storm in one hemisphere but enhance the chances of drought in another.
On the other hand, spraying aerosols in the southern periphery will increase the number of tropical storms as opposed to droughts. Aerosols have a varying effect depending on the area. The interaction of aerosols with jet streams and air current of the air around the Earth decides the effect of these particles on a certain place. Professor Jim Haywood, the co-author of the study from the Mathematics department at the University of Exeter, concluded,” This study shows how a global temperature mark such as 1.5 or 2C needs to be coupled with information on a more territorial scale to properly evaluate the full range of climate impacts.”
Geoengineering has always been a hot topic regarding the need for climate change. This might be the causal factor for a conflict of interest between the temperate countries and tropical countries. Geo-engineering isn’t a permanent solution to dealing with the effects of global warming but can play a crucial role during emergencies.