New Paper: Estimated Warming Due to CO2 Cut by 65%?
In “Short-lived uncertainty?” Joyce E. Penner et al. note that several short-lived atmospheric pollutants—such as methane, tropospheric ozone precursors and black-carbon aerosols—contribute to atmospheric warming while others, particularly scattering aerosols, cool the climate. Figuring out exactly how great the impacts of these other forcings are can radically change the way historical climate change is interpreted. [...]