This is an extraordinarily bad idea
Didn't we decide a long time ago that sulfur aerosols in the upper atmosphere were a bad idea....you remember....the whole ozone thing. Acid Rain. Is that another Lefty enviro, "Never Mind"?
Edit: Here's a good addition that shows how bad the above idea is. Check Dr. Dewpoint's archives for a lot of really good, logical data you won't see most other places.