What about lower altitude aerosol injection? It is already happening with our existing pollution anyway and we can say increase the altitude as we learn more. Specially I have seen it suggested over a regional area for a short amount of time, say 6 weeks over the Great Barrier Reef to avoid a particularly bad coral bleaching, or to avoid a major heatwave over population centers. It must be economic because it happens by accident with no effort.
Sulfur at low altitudes? You get the disadvantages of sulfur pollution with much less effectiveness per mass, and worse cost-effectiveness than using salt. There’s a reason sulfur is removed from gasoline.
Do you have data on cost effectiveness for say salt then as a temporary measure. I expect people will want some short term experimentation with any chosen technique and be ok with low cost effectiveness to begin with
What about lower altitude aerosol injection? It is already happening with our existing pollution anyway and we can say increase the altitude as we learn more. Specially I have seen it suggested over a regional area for a short amount of time, say 6 weeks over the Great Barrier Reef to avoid a particularly bad coral bleaching, or to avoid a major heatwave over population centers. It must be economic because it happens by accident with no effort.
Sulfur at low altitudes? You get the disadvantages of sulfur pollution with much less effectiveness per mass, and worse cost-effectiveness than using salt. There’s a reason sulfur is removed from gasoline.
Do you have data on cost effectiveness for say salt then as a temporary measure. I expect people will want some short term experimentation with any chosen technique and be ok with low cost effectiveness to begin with