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I can't find mention of it, either. I'd been listening to something on youtube, multiple topics with climate change being one of them. It was a woman and a man talking anout CO2 actually being a coolant rather than a heat causing greenhouse gas. The woman mentioned a huge eruption in the Philipines, and how the gas and dust from volcanos also diflects heat and cools the earth. I may have incorrectly surmised that the volcano was over the weekend since they talked about incteasing frequency of volcanos. Anyway, it was supposed to be a new recording, and I listened to it before Popo erupted. Yhey were discussing current events and corruption so tje climate change was a part of the corruption issues. I dunno. There are 20 some odd active volcanos in the area, I forget how many inactive ones. I thought this volcano was somewhere near Krakatoa..not sure of that's sprlled correctly. Maybe I dreamed it. My dreams can be that vivid and realistic 😄

The “huge” eruption in Philippines would be Mt. Pinatubo, back in 1991. See the documentary referenced upthread - it’s an excellent “watch”.

Not all volcanos, even of nominally similar energy, have the same atmospheric effects: Location (obviously), amount and height of ash injection into the atmosphere, and amount and type of gas releases can all vary greatly, and have correspondingly varying effects. Also, I suspect ash would generally have a shorter term effect than gases released, unless a major cycle was “triggered” — but I may be wrong about that.

CO2 definitely absorbs infrared but the dust and gas are different things and yes, they can and do deflect incoming solar radiation resulting in cooling.

FWIW, the strongest, most abundant greenhouse gas in the atmosphere is water vapor.

The next strongest, but not as abundant, is methane.

CO2 is third in strength but is more abundant than methane.