Simulating Arctic Climate Warmth and Icefield Retreat in the Last Interglaciation

  title={Simulating Arctic Climate Warmth and Icefield Retreat in the Last Interglaciation},
  author={Bette L. Otto‐Bliesner and Shawn J. Marshall and Jonathan T. Overpeck and Gifford H. Miller and Aixue Hu},
  pages={1751 - 1753}
In the future, Arctic warming and the melting of polar glaciers will be considerable, but the magnitude of both is uncertain. We used a global climate model, a dynamic ice sheet model, and paleoclimatic data to evaluate Northern Hemisphere high-latitude warming and its impact on Arctic icefields during the Last Interglaciation. Our simulated climate matches paleoclimatic observations of past warming, and the combination of physically based climate and ice-sheet modeling with ice-core… 

Interhemispheric Ice-Sheet Synchronicity During the Last Glacial Maximum

A chronology for the Weddell Sea sector of the East Antarctic Ice Sheet is developed that indicates that the advance to and retreat from their maximum extent was within dating uncertainties synchronous with most sectors of Northern Hemisphere ice sheets.

Impact of meltwater on high-latitude early Last Interglacial climate

Abstract. Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and

Melting of Northern Greenland during the last interglaciation

Using simulated climate data from the comprehensive coupled climate model IPSL CM4, we simulate the Greenland ice sheet (GrIS) during the Eemian interglaciation with the three-dimensional ice sheet

Last interglacial Arctic warmth confirms polar amplification of climate change

Sea-ice-free Arctic during the Last Interglacial supports fast future loss

The Last Interglacial (LIG), a warmer period 130,000–116,000 years before present, is a potential analogue for future climate change. Stronger LIG summertime insolation at high northern latitudes

Investigating the evolution of major Northern Hemisphere ice sheets during the last glacial-interglacial cycle

Abstract. A 2.5-dimensional climate model of intermediate complexity, CLIMBER-2, fully coupled with the GREMLINS 3-D thermo-mechanical ice sheet model is used to simulate the evolution of major

Paleoclimatic Evidence for Future Ice-Sheet Instability and Rapid Sea-Level Rise

The record of past ice-sheet melting indicates that the rate of future melting and related sea-level rise could be faster than widely thought.

Coupled regional climate–ice-sheet simulation shows limited Greenland ice loss during the Eemian

Abstract. During the last interglacial period (Eemian, 130–115 kyr BP) eustatic global sea level likely peaked at > 6 m above the present-day level, but estimates of the contribution of the Greenland

South Greenland ice-sheet collapse during Marine Isotope Stage 11

It is shown that the south GIS was drastically smaller during MIS 11 than it is now, with only a small residual ice dome over southernmost Greenland, evidence for late-Quaternary GIS collapse after it crossed a climate/ice-sheet stability threshold that may have been several degrees above pre-industrial temperatures.



Paleoclimatic Evidence for Future Ice-Sheet Instability and Rapid Sea-Level Rise

The record of past ice-sheet melting indicates that the rate of future melting and related sea-level rise could be faster than widely thought.

The role of oceanic forcing in mid‐Holocene northern hemisphere climatic change

Previous model investigations suggested that changes in orbital forcing and feedbacks associated with northward expansion of the boreal forest were both required to explain the full magnitude of

The Response of Northern Hemisphere Extratropical Climate and Vegetation to Orbitally Induced Changes in Insolation during the Last Interglaciation

Abstract The last interglaciation (substage 5e) provides an opportunity to examine the effects of extreme orbital changes on regional climates. We have made two atmospheric general circulation model

Ice-Sheet and Sea-Level Changes

Observational and modeling advances have reduced many uncertainties related to ice-sheets behavior, but recently detected, rapid ice-marginal changes contributing to sea-level rise may indicate greater ice-sheet sensitivity to warming than previously considered.

Greenland glacial history, borehole constraints, and Eemian extent

[1] We examine the extent to which observations from the Greenland ice sheet combined with three-dimensional dynamical ice sheet models and semi-Lagrangian tracer methods can be used to constrain

Milankovitch Forcing of the Last Interglacial Sea Level

The sea-level results are shown to be consistent with climate models, and indicate that a fuller understanding of the Milankovitch-climate connection requires consideration of fields other than just insolation forcing at 65�N.

Thinning of the ice sheet in northwest Greenland over the past forty years

Direct measurements of the changes in surface elevation between 1954 and 1995 on a traverse across the north Greenland ice sheet are presented, finding only small changes in the eastern part of the transect, except for some thickening of the north ice stream.

Substantial contribution to sea-level rise during the last interglacial from the Greenland ice sheet

It is concluded that the high sea level during the last interglacial period most probably included a large contribution from Greenland meltwater and therefore should not be interpreted as evidence for a significant reduction of the West Antarctic ice sheet.

Ice Core Evidence for Extensive Melting of the Greenland Ice Sheet in the Last Interglacial

  • R. Koerner
  • Environmental Science, Geography
  • 1989
Evidence from ice at the bottom of ice cores from the Canadian Arctic Islands and Camp Century and Dye-3 in Greenland suggests that the Greenland ice sheet melted extensively or completely during the