Aligning climate scenarios to emissions inventories shifts global benchmarks.

ABSTRACT: Taking stock of global progress towards achieving the Paris Agreement requires consistently measuring aggregate national actions and pledges against modelled mitigation pathways¹. However, national greenhouse gas inventories (NGHGIs) and scientific assessments of anthropogenic emissions follow different accounting conventions for land-based carbon fluxes resulting in a large difference in the present emission estimates^2,3, a gap that will evolve over time. Using state-of-the-art methodologies⁴ and a land carbon-cycle emulator⁵, we align the Intergovernmental Panel on Climate Change (IPCC)-assessed mitigation pathways with the NGHGIs to make a comparison. We find that the key global mitigation benchmarks become harder to achieve when calculated us

SUBMITTER: Gidden MJ 

PROVIDER: S-EPMC10700135 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature