Off-set

They identify methane, tropospheric ozone, hydrofluorocarbons and black carbon as pollutants that could be targeted, with technologies that already exist, to drastically cut their release. Quickly implementing that strategy could off-set warming temperatures by up to 50 percent by 2050, and reduce sea level rise by 22 to 42 percent by the end of the century. Delaying emission cuts would reduce the beneficial impact.