East Antarctic warming forced by ice loss during the Last Interglacial

Abstract

During the Last Interglacial (LIG; 129-116 thousand years before present), the Antarctic ice sheet (AIS) was 1 to 7 m sea level equivalent smaller than at pre-industrial. Here, we assess the climatic impact of partial AIS melting at the LIG by forcing a coupled climate model with a smaller AIS and the equivalent meltwater input around the Antarctic coast. We find that changes in surface elevation induce surface warming over East Antarctica of 2 to 4 °C, and sea surface temperature (SST) increases in the Weddell and Ross Seas by up to 2 °C. Meltwater forcing causes a high latitude SST decrease and a subsurface (100–500 m) ocean temperature increase by up to 2 °C in the Ross Sea. Our results suggest that the combination of a smaller AIS and enhanced meltwater input leads to a larger sub-surface warming than meltwater alone and induces further Antarctic warming than each perturbation separately.

Utilization of CO2-captured poly(allylamine) as a polymer surfactant for nanoarchitecture production in a closed CO2 cycle

“…3 These frequent wildfires have further increased CO 2 emissions, creating a vicious cycle of warming. A rise in ocean temperatures has caused sea levels to rise by melting ice sheets, 4–7 resulting in the reduction of terrestrial habitats 8,9 and changes in marine ecosystems. 10–13 These environmental changes have led to significant losses in biodiversity 13,14 and impacts on the global economy.…”