Long- and short-term coupling of sea surface temperature and atmospheric CO₂ during the late Paleocene and early Eocene.

ABSTRACT: The late Paleocene and early Eocene (LPEE) are characterized by long-term (million years, Myr) global warming and by transient, abrupt (kiloyears, kyr) warming events, termed hyperthermals. Although both have been attributed to greenhouse (CO₂) forcing, the longer-term trend in climate was likely influenced by additional forcing factors (i.e., tectonics) and the extent to which warming was driven by atmospheric CO₂ remains unclear. Here, we use a suite of new and existing observations from planktic foraminifera collected at Pacific Ocean Drilling Program Sites 1209 and 1210 and inversion of a multiproxy Bayesian hierarchical model to quantify sea surface temperature (SST) and atmospheric CO₂ over a 6-Myr interval. Our reconstructions span the initiation of

SUBMITTER: Harper DT 

PROVIDER: S-EPMC11388285 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature