[BurningFrog]

The distinction is important because at lower altitudes SO2 produces acid rain. But the stratosphere is far above the rain clouds.

NASA report on the Mount Pinatubo caused global cooling: https://earthobservatory.nasa.gov/images/1510/global-effects...

[SketchySeaBeast]

Clarifying what part of the atmosphere is important, sure, to say it's not in the atmosphere and instead in the stratosphere is absolutely wrong.

Doesn't SO2 sink in air? Because we'll need to be constantly adding it to the atmosphere aren't we going to end up with acid rain as it falls to the ground?

[BurningFrog]

My impression is that there is some leakage, but very small compared to the acid rain problems of the past.

Either way, if acid rain is the price for controlling global warming, I think that is a very desirable trade-off!