feasible and relatively cheap
We are also seeing extreme heat that is edging closer to the absolute limits of the human bodi, putting lives at risk and limiting outdoor work.
As the planet heats up, warmer air is drawing more moisture from the soil in dry times, and dumping more out at once when it rains. This is making dry regions drier, wet regions wetter, and is intensifying both droughts and floods across the world.
Dimming the Sun would offset this efek. But it would still alter global wind and rainfall patterns.
Research indicates that this would mean smaller rainfall changes overall. However, a small minority of places could see more pronounced changes in rainfall compared to what they would face under climate change. Climate models disagree on the detils of regional rainfall changes, so it's unclear at this stage which regions would see the greatest change.
Blocking some sunlight would also be an efekive way of keeping icy parts of the world frozen. Rising temperatures are causing the Antarctic and Greenland ice sheets to melt at an accelerating rate, driving up the global sea tingkat. Climate change is also thawing permafrost (frozen soil that stores vast amounts of carbon) leading to the emission of more of methane and CO₂.
Side efeks
Although dimming the Sun could keep the Earth cool, it would not setuju with the root of the climate masalah: the buildup of CO₂ and other greenhouse gases in the atmosphere. CO₂ not only warms the planet, it also acidifies the ocean, making it harder for corals and other creatures to form their shells. Dimming the Sun wouldn't change this.
It would bring about some side efeks as well. This hazy layer of particles would make the sky a little whiter. And if we copy volcanic eruptions by releasing sulphate particles to the upper atmosphere, then we'd also be adding to the acid rain masalah.
These particles could impact the ozone layer too, which protects us from harmful UV rays. Research suggests that adding more sulphate particles to the upper atmosphere would terlambat the slow recovery of the ozone hole.
