Introduction and framing
IPCC, 2022: Climate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, 2022Abstract
Global greenhouse gas (GHG) emissions continued to rise to 2019: the aggregate reductions implied by current Nationally Determined Contributions (NDCs) to 2030 would still make it impossible to limit warming to 1.5°C with no or limited overshoot, and would only be compatible with likely limiting warming below 2°C if followed by much steeper decline, hence limiting warming to either level implies accelerated mitigation actions at all scales (robust evidence, high agreement).