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IPCC: GHG emissions accelerating despite mitigation efforts; major institutional and technological change required to keep the heat down

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giga tonne carbon dioxide equivalent (GtCO 2 eq) (2.2%) per year from 2000 to 2010 compared to 0.4 GtCO 2 eq (1.3%) per year from 1970 to 2000. Total anthropogenic GHG emissions were the highest in human history from 2000 to 2010 and reached 49 (±4.5) Increased use of coal relative to other energy sources has reversed the long?

Emissions 257
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NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

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Aerosols can have either a warming or cooling effect, depending on their composition, but the two aerosol types that Shindell modeled—sulfates and nitrates—scatter incoming light and affect clouds in ways that cool Earth. And hydroxyls drive long chains of reactions involving other common gases, including ozone. —Drew Shindell.