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that global warming was affecting our planet. Now, the former director of NASA's Goddard Institute has another dire message for humanity: that simply reducing greenhouse gas emissions won't be enough., Hansen and his team of researchers found that the rate of global warming is accelerating — a controversial claim even amongst climate scientists.
According to these new estimates, we're on track to blow past 1.5 degrees Celsius of warming — a limit set by world leaders in the 2015 Paris Agreement — sometime during this decade. And by 2050, we'll already have hit 2 degrees Celsius.A long debated figure for climate scientists is how much warming would occur if the levels of carbon dioxide in the atmosphere doubled their amount from pre-industrial levels.
Hansen's work paints a grimmer picture. Using new paleoclimate data, his research indicates that doubling CO2 could lead to an outrageous 4.8 degrees of warming.Global restrictions have reduced the amount of these toxic airborne pollutants, but the effect is a double-edged sword. Aerosols actually help reflect sunlight and cool the atmosphere, and with their quantities dwindling, we're only now beginning to experience the full effects of the planet's warming.
"That is very much on the high end of the range of estimates that are in the academic literature today," Zeke Hausfather, a climate researcher at Berkeley Earth, told theCO2 levels in the atmosphere have climbed at a steady pace, and we've still got a ways to go before reaching the ominous carbon doubling estimate. Right now, CO2 levels are atCurrent Events
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