Relative contributions of CO 2 and ice sheets on the Mid-Pleistocene Transition

Implications of Reduced Antarctic Ice Sheets for the Global Climate System

As anthropogenic CO2 emissions warm the global climate and cause retreat of polar ice sheets, there is an urgent need to understand the consequences of ice sheet mass loss. The paleoclimate record is a valuable resource for illuminating how the Earth system may have behaved under warmer conditions of the past. However,...

Comparing the Simulated Surface Mass Balance of the Laurentide Ice Sheet During the Last Deglaciation With a Geophysical Reconstruction

Despite decades of research, our understanding of the role of climate feedbacks in shaping Pleistocene glacial cycles remains incomplete. Here, we investigate the decay of the Laurentide Ice Sheet (LIS) by calculating its surface mass balance (SMB) during the last deglaciation using the isotope‐enabled transient climat...

New Constraints on the Onset of Antarctic Glaciation From Combined Radiogenic Hafnium and Neodymium Isotopes

The drawdown of atmospheric CO2 likely triggered Antarctic glaciation during the Eocene‐Oligocene Transition (34 Ma). Accurately constraining this shift from “greenhouse” to an “icehouse” climate is essential for understanding global carbon cycle dynamics. However, conventional proxies often lack the sensitivity to cap...

A Phanerozoic-style icehouse climate in the middle Ediacaran

Reconstruction and attribution of Late-Pleistocene changes in the Earth’s energy imbalance

The Earth’s energy imbalance (EEI) that develops at the top of the atmosphere is accommodated by gains or losses of energy in Earth’s heat reservoirs, leading to temperature and sea level change. The global ocean has stored about 90% of the EEI from anthropogenic forcing, but the attribution of past changes of EEI rema...

Ediacaran coupling of climate and biosphere dynamics

Climate change is demonstrably linked to radiations, extinctions, and turnovers in the biosphere throughout the Phanerozoic (538.8 Ma to present). Here, we suggest this connection existed as early as the late Ediacaran (ca. 579−538.8 Ma), the first interval in Earth’s history to host complex macroscopic organisms, incl...