Yes.

What you're describing sounds like the Clathrate gun hypothesis, which would be moderately terrifying: <https://en.wikipedia.org/wiki/Clathrate_gun_hypothesis>

Why would it be ‘moderately terrifying’? It would fucking suck.

I guess "moderately" because it's a climate change outcome that's actually debated by climate scientists, and not regarded as particular likely to happen.

If it does happen it shifts man-made climate change from an unprecedented humanitarian disaster to a possible global extinction event. The last time it happened it may have wiped out 81% of marine species and 70% of terrestrial vertebrates.

But, there are so many terrible consequences of climate change that are near certainties for us to waste valuable focus and mental energy being terrified of the merely hypothetical.

<https://literarydevices.net/understatement/>

The big problem with Global warming is that it's a feedback loop. The main cause of warming is warming, despite the massive human CO2 production. Even stopping human CO2 production all together would slow global warming, bringing it back to 2 degrees over 1000 years or so, instead of 100. Even that would be a lot faster than the natural rate. Earth heats up, then you get an ice age, then it heats up again, that's the natural cycle.

The point of climate policy is not to stop global warming, in the sense of cooling the planet in an absolute sense. It's to slow it down, cooling it in a relative sense.

You could have debunked that thought with one simple search like https://www.google.com/search?q=volcanic+eruption+co2

No

https://www.climate.gov/news-features/climate-qa/which-emits...

The white ice helps in reflecting sunlight better, just one of the known cascading effects.