The influence of glacial Northern Hemisphere ice sheets on atmospheric circulation

Southern Hemisphere sea ice response to different flow regimes over the Antarctic Peninsula

Low-level winds over Antarctica are overwhelmingly controlled by the local orography. They, in turn, exert a large control over sea ice formation and transport. In this work, we investigate the relationship between Antarctic sea ice and the parameterized orographic gravity wave drag in the UK CMIP6 (Coupled Model Inter...

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,...

Ocean warming caused by Late Ordovician glacial onset in a coupled climate-ice sheet simulation

The Late Ordovician marks the first major continental ice sheet event in the Phanerozoic Eon, despite high CO 2 levels, coinciding with a dramatic global temperature drop and one of the largest mass extinctions. However, the critical role of ice sheet-climate feedbacks in driving the Late Ordovician glaciation rema...

High centennial-scale variability in an East Antarctic snow accumulation record spanning the last millennium

Sensitivity of the results of Northern Hemisphere ice sheet model simulations to millennium-scale forcing variations in the last glacial cycle

Ensemble simulations with the Northern Hemisphere ice sheets model are performed for the last glacial cycle (last 123 kyr). The time dependence of the atmospheric forcing is reconstructed based on two sets of borehole data — EPICA (The European Project for Ice Coring in Antarctica; the data exhibit weak millennium-scal...

Changes in Southern Ocean Circulation Across Climate Transitions and Their Impacts on Carbon and Heat Fluxes.

Today, the Southern Ocean (SO) is the primary sink of anthropogenic heat and carbon, yet anthropogenic warming and ozone depletion have altered its circulation and stratification, creating uncertainty about the persistence of this sink. Evidence from the last glacial period and deglaciation shows that the SO played a c...