NextBigFuture

World will blow through Two Degree CO2 and have to look at Geoengineering even if all electricity went solar and all cars are electric

On the low estimate for 1.5C degree change, the world is about 14 months away from using up the permitted CO2 emissions. On the low estimate for 2C degree change, the world is less than ten years away ...
Science Daily

Carbon dioxide's heavy stamp on temperature: Doubling CO2 may mean 7 to 14 degree increase

A doubling of the amount of CO2 in the atmosphere could cause an increase in the average temperature on earth from 7 to even a maximum of 14 degrees. That is shown in the analysis of sediments from ...
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CO2 emissions on track to push Earth beyond 1.5 degree threshold by 2028, report finds.

Humans are releasing so much greenhouse gas that within three years, planet Earth will likely be unable to avoid 1.5 degrees Celsius of long-term warming since pre-industrial times. That's the finding ...
NextBigFuture

If both lower CO2 sensitivity and net positive up to 3 degrees of warming were correct then global warming is not net bad until 2080 to 2180

Without any feedbacks, a doubling of CO2 (which amounts to a forcing of 3.7 W/m2) would result in 1 °C global warming, which is easy to calculate and is undisputed. The remaining uncertainty is due ...