ID:
S_128
Mid-Pleistocene and Mid-Brunhes Transitions: observations and forcing mechanisms
Lead Convener
María F. Sánchez Goñi Ecole Pratique des Hautes Etudes, Paris Science Lettres (EPHE, PSL), France. maria.sanchez-goni@u-bordeaux.fr
Co Convener(s)
Qiuzhen Yin, Earth and Life Institute, Earth and Climate Research Center, Université catholique de Louvain, Belgium. qiuzhen.yin@uclouvain.be Xiaowen Quan, University Bordeaux, CNRS, Bordeaux INP, EPOC, UMR 5805, France. xiaowen.quan@u-bordeaux.fr Zhipeng Wu Earth and Life Institute, Earth and Climate Research Center, Université catholique de Louvain. zhipeng.wu@uclouvain.be Stefanie Kaboth-Bahr Institute of Geological Sciences, Freie Universität Berlin, Berlin, Germany. stefanie.kaboth-bahr@fu-berlin.de
Session Keywords
Mid-Pleistocene Transition, Mid-Brunhes Transition, Proxy records, Modeling
Commission
PALCOM
Abstract Category
AI-ML
Session Description
The Quaternary period (2.56 Ma–present) is marked by recurring glacial cycles and the emergence of Homo. It also saw two major climate transitions, the Middle Pleistocene Transition (MPT, 1.2–0.65 Ma) that was characterized by a shift in the dominant glacial cycles from 41k to 100k years, and the Mid-Brunhes Transition (MBT) that was characterized by warmer interglacials and higher CO₂ concentration after ~430 ka ago. Despite decades of research, the origins of these two transitions remain unclear, and many hypotheses were proposed. This session will bring together researchers providing proxy records and model simulations to assess the characteristics of these climate transitions and their forcing and feedback mechanisms.
