Can a Million Tons of Sulfur Dioxide Combat Climate Change?
June 23, 2008 WIRED / SCIENCE
Depending upon the starting elevation, stratospheric sulfate aerosol will stay in the atmosphere for only a year or two.
The next question, of course, is how to get the particles up there. Various proposals have suggested using artillery, balloons, suspended hoses, military jets, or even converted 747s. Then there is the question of where to deposit the sulfur.