Man made carbon dioxid­e emissi­ons drasti­cally outstr­ip the contri­bution of volcan­oes, scient­ists reveal­PARIS: Human activity churns out up to 100 times more planet-warming carbon each year as all the volcanoes on Earth, says a decade-long study released on Tuesday. The exceptions to this came in the form of “catastrophic disturbances” to Earth’s carbon cycle, such as immense volcanic eruptions or the meteor strike that killed off the dinosaurs. By comparison, the CO2 released annually by volcanoes hovers around 0.3 and 0.4 gigatonnes — roughly 100 times less than man made emissions. “Climate sceptics really jump on volcanoes as a possible contender for top CO2 emissions but it’s simply not the case,” said Edmonds. In contrast, man made carbon emissions have seen CO2 levels rise two thirds in a span of a few centuries.

Source: The Express Tribune October 01, 2019 18:56 UTC