“So you’re sayin’ all the billions spent on pollution control in the developed world were p*ssing in the wind? LOL”
Nope, but all the effort to reduce AGW is worthless if a mega-eruption happens.
Actually, volcanos typically emit cooling gasses (mainly SO2) and particulates (block sunlight) that override the effects of greenhouse gases emitted. So, if a mega-eruption occurs, cooling occurs. Our efforts to reduce AWG might backfire...
https://en.wikipedia.org/wiki/1815_eruption_of_Mount_Tambora#Disruption_of_global_temperatures
https://en.wikipedia.org/wiki/Krakatoa#1883_eruption
And to throw an Icelandic volcano into the “climate effects” discussion:
https://en.wikipedia.org/wiki/Laki
(Initially there was a hot summer in Europe, but cooling followed in many places, including North America. The Mississippi River reportedly froze as far south as New Orleans. Imagine what that kind of weather would do to a non-winterized power grid!)