Alternative climatic steady states near the Permian-Triassic Boundary.

ABSTRACT: Due to spatial scarcity and uncertainties in sediment data, initial and boundary conditions in deep-time climate simulations are not well constrained. On the other hand, depending on these conditions, feedback mechanisms in the climate system compete and balance differently. This opens up the possibility to obtain multiple steady states in numerical experiments. Here, we use the MIT general circulation model to explore the existence of such alternative steady states around the Permian-Triassic Boundary (PTB). We construct the corresponding bifurcation diagram, taking into account processes on a timescale of thousands of years, in order to identify the stability range of the steady states and tipping points as the atmospheric CO₂ content is varied. We find three alternative stead

SUBMITTER: Ragon C 

PROVIDER: S-EPMC11525819 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature