That Wikipedia article completely contradicts what you said. It says:
> the cumulative products of 100 of these firestorms would unmistakably cool the global climate by approximately 1 ÂC (1.8 ÂF), largely eliminating the magnitude of anthropogenic global warming for two to three years
i.e. the climactic effect "100 bombs" would be no more than a brief reversal of the current warming trend. The much more severe impact you quoted requires a much larger number of bombs, and, as the article goes on to point out, is based on highly questionable assumptions.