The ejecta volume from Yellowstone supervolcano erupting would be three orders of magnitude greater than Mount St. Helens (~1,000km^3 compared to ~1k^3). The fo

The ejecta volume from Yellowstone supervolcano erupting would be three orders of magnitude greater than Mount St. Helens (~1,000km^3 compared to ~1k^3). The force of its first and largest eruption was about ~2,000 times greater as well. They're not comparable in any sense of the word. Recovery for much of the US's ecosystem would be measured in centuries, or more likely, millennia. As for the comparison to climate change, it's flawed on its face. Climate change wasn't exactly planned. There's a difference between that sort of change and a focused, targeted effort to change a particular element of nature (in this case, cooling a supervolcano) and an unintentional consequence of industrialization. In any case, any effort to roll back the effects of climate change is going to involve some form of climate engineering. That could include anything from artificial carbon sequestration to a massive solar dust shade at L1 blocking a small fraction of solar radiation to give us the time needed to implement those sequestration systems. Or any number of other proposals. Should we just accept higher temperatures instead, even if we manage to slow or even halt the progression? We muck with nature all the time, and we're going to have to continue to do so in order to protect it.