I wonder if simply tainting the fuel of airliners with sulfur would be good enough for a meaningful effect.
A half a percent in the global jet fuel supply would put that order of sulfur into the atmosphere, a bit lower than what I think is being proposed here. But adulterating the fuel supply would be affordable and equivalent to a smallish tax on flight.
A half a percent in the global jet fuel supply would put that order of sulfur into the atmosphere, a bit lower than what I think is being proposed here. But adulterating the fuel supply would be affordable and equivalent to a smallish tax on flight.