My favorite opportunity for Marine Cloud Brightening is in the shipping industry. If container ships had saltwater aerosolizers or new fuel additives, it should be possible to bring back the shiptracks—these are the low marine clouds that were recently diminished due new clean fuel standards [1]. Those standards are great but they inadvertently increased the warming effect of shipping by about a third [2]. Ouch.
Solar is doubling in capacity every ~2.5 years — roughly a 25% annual growth rate [3]. That means, in 30 years, we might have some 1500 terawatts of solar. That would dwarf current fossil fuel use. The point is that shouldn't avoid figuring out the science of climate management (geoengineering etc) because we are afraid people will just keep using fossil fuels. We need to get the heat balance undercontrol before 30 years go by.
https://www.nbclosangeles.com/news/national-international/ma...
https://en.wikipedia.org/wiki/Marine_cloud_brightening