(Sigh) It seems I have to spell it out. > The Mount Pinatubo eruption emitted 42 million tonnes of CO2 (Gerlach et al 1996). Compare this to human emissions in

(Sigh) It seems I have to spell it out. > The Mount Pinatubo eruption emitted 42 million tonnes of CO2 (Gerlach et al 1996). Compare this to human emissions in 1991: 23 billion tonnes of CO2 (CDIAC). The strongest eruption over the last half-century amounted to 0.2% of human CO2 emissions in that year. [1] In other words, for volcanic eruptions to match human CO2 output, we need ~500 Mount Pinatubo's every year (or roughly two of them every day). Like watching volcanoes? [1] https://www.skepticalscience.com/print.php?r=50 https://www.skepticalscience.com/print.php?r=50 Edit: on second thought, if we have anywhere near that many volcanoes, most of us will be too busy starving to death to contribute anything meaningful to the anthropogenic global warming (which would be no more), so maybe one Mount Pinatubo every week or so would be enough to match human emission.