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But if it had been a different type of eruption, it could have caused worldwide cooling, right? Isn’t that what happened after Mt. Pinatubo? Are eruptions pred

But if it had been a different type of eruption, it could have caused worldwide cooling, right? Isn’t that what happened after Mt. Pinatubo? Are eruptions predominantly warming events or cooling events or pretty evenly split? I suppose the vast majority probably only have local effects, but of the big ones, I feel like this is the first one I’ve heard of that’s caused temperatures to rise?

Turskarama 3y ago
Most eruptions cause cooling via release of SO2, and some very short term local cooling with ash. This eruption released a lot of water vapor because it was underwater, and water vapour is actually a very potent greenhouse gas. So in general, volcanoes on land will cause cooling. I don't know if you can generalise underwater volcanoes the same way, it probably depends on how deep they are.
somat 3y ago
It has something to do with ratio of released gasses, how high in the atmosphere the gasses go, and how close to the equator the volcano is. The main cooling gas appears to be sulfur dioxide.