"Rapid decarbonization" means the process of reducing or eliminating the release of carbon dioxide and other greenhouse gases into the environment in a quick and significant manner. Full definition
«industrialized and industrializing societies have not collectively reduced the rate of growth of GHG emissions, let alone the absolute amount of emissions, and thus the world will experience significant and growing impacts from climate change even if rapid decarbonization of energy systems begins.» (centerforcarbonremoval.org)
The 2015 Paris climate agreement specifies a clear goal to limit global warming by 2 degrees Celsius above preindustrial levels (UNFCCC 2015), and the recent publication of a roadmap for rapid decarbonization offers guidance on actions required at the national level to effectively limit carbon emissions in order to meet the goal (Rockström et al. 2017). (academic.oup.com)
Now, even rapid decarbonization is not enough. (ecoshock.org)