Short-and long-term variability of the Antarctic and Greenland ice sheets

E Hanna, D Topál, JE Box, S Buzzard… - Nature Reviews Earth & …, 2024 - nature.com
The variability of the Antarctic and Greenland ice sheets occurs on various timescales and is
important for projections of sea level rise; however, there are substantial uncertainties …

Stability of ice shelves and ice cliffs in a changing climate

JN Bassis, A Crawford, SB Kachuck… - Annual Review of …, 2024 - annualreviews.org
The largest uncertainty in future sea-level rise is loss of ice from the Greenland and Antarctic
Ice Sheets. Ice shelves, freely floating platforms of ice that fringe the ice sheets, play a …

The Paris Climate Agreement and future sea-level rise from Antarctica

RM DeConto, D Pollard, RB Alley, I Velicogna… - Nature, 2021 - nature.com
Abstract The Paris Agreement aims to limit global mean warming in the twenty-first century to
less than 2 degrees Celsius above preindustrial levels, and to promote further efforts to limit …

Heterogeneous melting near the Thwaites Glacier grounding line

BE Schmidt, P Washam, PED Davis, KW Nicholls… - Nature, 2023 - nature.com
Thwaites Glacier represents 15% of the ice discharge from the West Antarctic Ice Sheet and
influences a wider catchment,–. Because it is grounded below sea level,, Thwaites Glacier is …

Widespread seawater intrusions beneath the grounded ice of Thwaites Glacier, West Antarctica

E Rignot, E Ciracì, B Scheuchl, V Tolpekin… - Proceedings of the …, 2024 - pnas.org
Warm water from the Southern Ocean has a dominant impact on the evolution of Antarctic
glaciers and in turn on their contribution to sea level rise. Using a continuous time series of …

Suppressed basal melting in the eastern Thwaites Glacier grounding zone

PED Davis, KW Nicholls, DM Holland, BE Schmidt… - Nature, 2023 - nature.com
Thwaites Glacier is one of the fastest-changing ice–ocean systems in Antarctica,–. Much of
the ice sheet within the catchment of Thwaites Glacier is grounded below sea level on …

Tip** point in ice-sheet grounding-zone melting due to ocean water intrusion

AT Bradley, IJ Hewitt - Nature Geoscience, 2024 - nature.com
Marine ice sheets are highly sensitive to submarine melting in their grounding zones, where
they transition between grounded and floating ice. Recently published studies of the …

Melt rates in the kilometer-size grounding zone of Petermann Glacier, Greenland, before and during a retreat

E Ciracì, E Rignot, B Scheuchl, V Tolpekin… - Proceedings of the …, 2023 - pnas.org
Warming of the ocean waters surrounding Greenland plays a major role in driving glacier
retreat and the contribution of glaciers to sea level rise. The melt rate at the junction of the …

Synchronous retreat of Thwaites and Pine Island glaciers in response to external forcings in the presatellite era

RW Clark, JS Wellner, CD Hillenbrand… - Proceedings of the …, 2024 - pnas.org
Today, relatively warm Circumpolar Deep Water is melting Thwaites Glacier at the base of its
ice shelf and at the grounding zone, contributing to significant ice retreat. Accelerating ice …

The West Antarctic Ice Sheet may not be vulnerable to marine ice cliff instability during the 21st century

M Morlighem, D Goldberg, JM Barnes, JN Bassis… - Science …, 2024 - science.org
The collapse of ice shelves could expose tall ice cliffs at ice sheet margins. The marine ice
cliff instability (MICI) is a hypothesis that predicts that, if these cliffs are tall enough, ice may …