Climate scientists say the world’s target to stay below a global warming of 2 degrees, made at the United Nations conference in Copenhagen in 2009 and Cancun 2010 will require decisive action this decade.
A comprehensive review of 193 emission scenarios from scientific literature to date has been published in Nature Climate Change today.
This study found the target of 44 billion tons of carbon dioxide equivalent emissions (GtCO2eq) by 2020 is a feasible milestone and an economically optimal approach for countries to meet the internationally agreed 2 degree target.
The study analysed feasible emissions scenarios, which included a mix of mitigation actions ranging from energy efficiency to carbon free technologies such as solar photovoltaic, wind and biomass.
“Our study revealed there are many emissions scenarios that are economically and technologically feasible pathways to a 2 degree target, but that for countries to get closer to this target they need to honour the higher end of their pledges,” one researcher said.