Ice-sheet losses track high-end sea-level rise projections

  title={Ice-sheet losses track high-end sea-level rise projections},
  author={Thomas Slater and Anna E. Hogg and Ruth H. Mottram},
  journal={Nature Climate Change},
  pages={879 - 881}
Observed ice-sheet losses track the upper range of the IPCC Fifth Assessment Report sea-level predictions, recently driven by ice dynamics in Antarctica and surface melting in Greenland. Ice-sheet models must account for short-term variability in the atmosphere, oceans and climate to accurately predict sea-level rise. 

The influence of emissions scenarios on future Antarctic ice loss is unlikely to emerge this century

Of all the components of the global sea-level budget, the future contribution of the Antarctic Ice Sheet is the most uncertain in sea-level rise projections. Dynamic ice sheet model simulations show

Effects of extreme melt events on ice flow and sea level rise of the Greenland Ice Sheet

. Over the past decade, Greenland has experienced several extreme melt events, the most pronounced ones in the years 2010, 2012 and 2019. With progressing climate change, such extreme melt events can

Increased variability in Greenland Ice Sheet runoff from satellite observations

CryoSat-2 satellite altimetry is used to produce direct measurements of Greenland's runoff variability, based on seasonal changes in the ice sheet’s surface elevation, which shows runoff is now also 60 % more variable from year-to-year as a consequence of large-scale fluctuations in atmospheric circulation.

Brief Communication: Reduction of the future Greenland ice sheet surface melt with the help of solar geoengineering

Abstract. The Greenland Ice Sheet (GrIS) will be losing mass at an accelerating pace throughout the 21st century, with a direct link between anthropogenic greenhouse gas emissions and the magnitude

Sources of Uncertainty in Greenland Surface Mass Balance in the 21st century

Abstract. The surface mass balance (SMB) of the Greenland Ice Sheet is subject to considerable uncertainties that complicate predictions of sea level rise caused by climate change. We examine the SMB

Uncertainties in Prediction of Future Sea Level Rise Due to Impact of Climate Change

On reviewing the development of the research methodologies on climate change and sea level rise during the last two decades, it is observed that the assumed scenarios for apprehending the rise in

Recent Developments in Sea-Level Rise and Its Related Geological Disasters Mitigation: A Review

With the rapid development of urbanization around the world, the sea-level-rise problem is gaining more and more attention in the 21st century. Sea-level rise is the result of a combination of

Widespread increase in dynamic imbalance in the Getz region of Antarctica from 1994 to 2018

Overall, dynamic imbalance accounts for two thirds of the mass loss from this region of West Antarctica over the past 25-years, with a longer-term response to ocean forcing the likely driving mechanism.

Review article: Earth's ice imbalance

Abstract. We combine satellite observations and numerical models to show that Earth lost 28 trillion tonnes of ice between 1994 and 2017. Arctic sea ice (7.6 trillion tonnes), Antarctic ice shelves



Potential sea-level rise from Antarctic ice-sheet instability constrained by observations

It is suggested that upper-bound estimates from low-resolution models and physical arguments are implausible under current understanding of physical mechanisms and potential triggers of marine-ice-sheet instability.

Global environmental consequences of twenty-first-century ice-sheet melt

Increased meltwater from the Greenland and Antarctic ice sheets will slow the Atlantic overturning circulation and warm the subsurface ocean around Antarctica, further increasing Antarctic ice loss.

Revisiting Antarctic ice loss due to marine ice-cliff instability

It is concluded that previous interpretations of these MICI projections over-estimate sea-level rise this century; because the MICI hypothesis is not well constrained, confidence in projections with MICI would require a greater range of observationally constrained models of ice-shelf vulnerability and ice-cliff collapse.

Accelerating changes in ice mass within Greenland, and the ice sheet’s sensitivity to atmospheric forcing

The spatial pattern of accelerating mass changes reflects the geography of NAO-driven shifts in atmospheric forcing and the ice sheet’s sensitivity to that forcing, and it is inferred that southwest Greenland will become a major future contributor to sea level rise.

Mass balance of the Antarctic Ice Sheet from 1992 to 2017

This work combines satellite observations of its changing volume, flow and gravitational attraction with modelling of its surface mass balance to show that the Antarctic Ice Sheet lost 2,720 ± 1,390 billion tonnes of ice between 1992 and 2017, which corresponds to an increase in mean sea level of 7.6‚¬3.9 millimetres.

Mass balance of the Greenland Ice Sheet from 1992 to 2018

  • Andrew Erik Eric Ben Michiel Isabella Pippa Kate Ian Gerh Shepherd Ivins Rignot Smith van den Broeke VelicogA. Shepherd J. Wuite
  • Environmental Science
  • 2019
Comparing and combining 26 individual satellite measurements of changes in the Greenland Ice Sheet’s volume, flow and gravitational potential to produce a reconciled estimate of its mass balance produces comparable results that approach the trajectory of the highest rates of sea-level rise projected by the IPCC.

Mass balance of the Greenland Ice Sheet from 1992 to 2018

The Greenland Ice Sheet has been a major contributor to global sea-level rise in recent decades 1 , 2 , and it is expected to continue to be so 3 . Although increases in glacier flow 4 – 6 and

Ice Sheet Model Intercomparison Project (ISMIP6) contribution to CMIP6.

The framework for ISMIP6 is described and it is described how it will provide a basis for investigating the feedbacks, impacts, and sea-level changes associated with dynamic ice sheets and for quantifying the uncertainty in ice-sheet-sourced global sea- level change.

The Greenland and Antarctic ice sheets under 1.5 °C global warming

Even if anthropogenic warming were constrained to less than 2 °C above pre-industrial, the Greenland and Antarctic ice sheets will continue to lose mass this century, with rates similar to those

Cloud microphysics and circulation anomalies control differences in future Greenland melt

Recently, the Greenland Ice Sheet (GrIS) has become the main source of barystatic sea-level rise1,2. The increase in the GrIS melt is linked to anticyclonic circulation anomalies, a reduction in