The amount of aerosol you need to I next is enormous, it needs to be sprayed at an altitude higher than realistic means of injection are feasible, and it has to be done in a way that doesn’t produce so much CO2 that it defeats the point.

Can you imagine an extant tech that can come close to doing that at the required scale? I can’t.

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kevin_thibedeau 5 hours ago | parent [-]

High altitude solar drone gliders that collect low level water vapor and spray it to form ice.

	▲	EA-3167 5 hours ago \| parent [-]
		It would be cheaper and more practical to talk about space-based sunshields, and that’s about as practical as prayer. At the altitudes any realistic glider can reach you’d have to use sulfur aerosols and not ice, and in either case you’d need to inject gigatons per year, every year because at that altitude aerosols are very short-lived. A realistic aircraft capable of those payloads will burn avgas, no solar craft comes close to the capability. The side effects such as a significant increase in acid rain, are not trivial either. These are fantasies of people who cannot accept the reality of what we’re facing.