Prime among them was carbon. Searing magmas from the volcano intruded into the Tunguska Basin in eastern Siberia, a region laden with thick deposits of coal, oil and gas. Heat from the molten rock baked the hydrocarbons, turning the area into the world's largest fossil fuel-burning plant. In all, the volcano may have belched as much as 100,000 gigatons of carbon into the air (all of humanity emits about eight gigatons of carbon annually).
So 100,000 gigatons in a 200,000-year-long assault comes to .5 gigatons/year this is a joke right? Not near enough carbon to do any harm.
You’ve just proved that mankind’s 8 GT/yr is a real problem...