Read the full story in the New York Times.
How much, exactly, will greenhouse gases heat the planet?
For more than 40 years, scientists have expressed the answer as a range of possible temperature increases, between 1.5 and 4.5 degrees Celsius, that will result from carbon dioxide levels doubling from preindustrial times. Now, a team of researchers has sharply narrowed the range of temperatures, tightening it to between 2.6 and 4.1 degrees Celsius.Associated journal article: Sherwood, S., Webb, M. J., Annan, J. D., Armour, K. C., Forster, P. M., Hargreaves, J. C., et al. (2020). “An assessment of Earth’s climate sensitivity using multiple lines of evidence.” Reviews of Geophysics 58, e2019RG000678. https://doi.org/10.1029/2019RG000678