Freshwater Discharge from Antarctica Shows Major Impacts on Future Climate

Science Advances, September 23

Under moderate and high emissions scenarios, the discharge of vast amounts of meltwater from the Antarctic Ice Sheet into the Southern Ocean could affect ocean currents and regional/global climate patterns due to impacts on the overturning ocean circulation.  The faster the ice sheet melts, the more cold freshwater flows into the Southern Ocean.  This could lead to a temporary cooling effect on air temperatures around Antarctica, while ocean and air temperatures elsewhere would continue warming. The future of the ice sheet hence depends on this interplay between atmospheric and oceanic processes. The temporary cooling effect disappears more quickly under high emissions scenarios.

https://advances.sciencemag.org/content/6/39/eaaz1169

Compiled by Amy Imdieke

Pam Pearson

Recent Posts

Carbon and Nitrogen Release Due to Melting Permafrost in Arctic River Deltas

Nature Communications, 29 May 2026 The soils of Arctic river deltas store large amounts of…

23 timmar ago

Himalayan Mountain Infrastructure Increasingly Exposed to Climate Risks

Scientific Reports, 27 May 2026 Rising global temperatures increase the exposure of communities and infrastructure…

23 timmar ago

Permafrost Thaw Increases Infrastructure Risks and Economic Inequality in the Qinghai-Tibet Plateau

Global Environmental Change, 20 May 2026 In the Qinghai-Tibet Plateau, reducing greenhouse gas emissions could…

23 timmar ago

Warming Near 1.5°C Commits Coastal Louisiana to Substantial Sea-Level Rise

Nature Sustainability, 4 May 2026 Sediment records from the Last Inter-Glacial (LIG) period suggest that…

3 dagar ago

Over Four Decades of Winter Arctic Sea Ice Loss Primarily Driven by GHG Emissions

NPJ Climate and Atmospheric Science, 20 May 2026 Human-caused warming has been the primary driver…

3 dagar ago

Sudden Meltwater Lake Drainage Speeds Up Greenland Ice Loss

Nature Communications, 27 May 2026 Sudden drainage of meltwater lakes through water-filled fractures can locally…

3 dagar ago