This effect is slight - not visibly apparent, you'd have to use instruments to detect it. That would also apply to solar panels. But this is the same effect as global warming in reverse.
If we have a top-of-atmosphere insolation of, say, 1300W/m2, and an emission of 1299W/m2 (not exact numbers), that will cause warming. If we add reflection, can we get those numbers to balance once more?
And note that this stuff will fall out of the atmosphere over a period of time. It would be an ongoing expense to do.
I don't see it likely to happen, on sheer cost grounds.
An alternative slightly more long-term plan would be a solar shade at a Lagrange point. Could even be used for space solar power, although at this point we're into deep science fiction. The Mars trilogy posited a solar Fresnel lens which would be used to warm Mars.
It would be disastrous if a program in any way like this went ahead, because it would be seen as a substitute for fixing the root problem, would steal funding from the latter, and would do nothing to stop the ocean acidification that threatens the roots of the global ocean ecosystem.
There is a dimming effect every time there is a sufficiently large volcanic eruption. https://www.scientificamerican.com/article/sun-dimming-volca...
This effect is slight - not visibly apparent, you'd have to use instruments to detect it. That would also apply to solar panels. But this is the same effect as global warming in reverse.
If we have a top-of-atmosphere insolation of, say, 1300W/m2, and an emission of 1299W/m2 (not exact numbers), that will cause warming. If we add reflection, can we get those numbers to balance once more?
And note that this stuff will fall out of the atmosphere over a period of time. It would be an ongoing expense to do.
I don't see it likely to happen, on sheer cost grounds.
An alternative slightly more long-term plan would be a solar shade at a Lagrange point. Could even be used for space solar power, although at this point we're into deep science fiction. The Mars trilogy posited a solar Fresnel lens which would be used to warm Mars.