Results 81 to 90 of about 8,171 (221)

A Simple Model for Deglacial Meltwater Pulses [PDF]

, 2018
Evidence from radiocarbon dating and complex ice sheet modeling suggests that the fastest rate of sea level rise in Earth's recent history coincided with collapse of the ice saddle between the Laurentide and Cordilleran ice sheets during the last ...
Robel, Alexander A., Tsai, Victor C.
core   +1 more source

The role of ice stream dynamics in deglaciation [PDF]

, 2016
Since the mid-Pleistocene transition, deglaciation has occurred only after ice sheets have grown large while experiencing several precession and obliquity cycles, indicating that large ice sheets are more sensitive to Milankovitch forcing than small ice ...
Robel, Alexander A., Tziperman, Eli
core   +1 more source

Constraints on Past CO2 and Climate Sensitivity From Global Temperature and Sea Level Reconstructions Across the Plio‐Pleistocene

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract In contrast to previous approaches, new reconstructions of changes in global mean surface temperature and global mean sea level (GMSL) include large variability in GMSL throughout the Pleistocene. Here we assess these reconstructions from an energy balance perspective by using them to force a global carbon cycle model in different scenarios ...
Peter Köhler, Peter U. Clark
wiley   +1 more source

Deglacial release of petrogenic and permafrost carbon from the Canadian Arctic impacting the carbon cycle

Nature Communications, 2022
The changes in atmospheric pCO2 provide evidence for the release of large amounts of ancient carbon during the last deglaciation. However, the sources and mechanisms that contributed to this process remain unresolved.
Junjie Wu, Gesine Mollenhauer, Ruediger Stein, Peter Köhler, Jens Hefter, Kirsten Fahl, Hendrik Grotheer, Bingbing Wei, Seung-Il Nam   +8 more
doaj   +1 more source

Ice-age ice-sheet rheology: constraints from the Last Glacial Maximum form of the Laurentide ice sheet [PDF]

Annals of Glaciology, 2000
AbstractState-of-the-art thermomechanical models of the modern Greenland ice sheet and the ancient Laurentide ice sheet that covered Canada at the Last Glacial Maximum (LGM) are not able to explain simultaneously the observed forms of these cryospheric structures when the same, anisotropy-enhanced, version of the conventional Glen flow law is employed ...
W. Richard Peltier, David L. Goldsby, David L. Kohlstedt, Lev Tarasov   +3 more
openaire   +1 more source

Global Climatic Zones in the Last Glacial Maximum Estimated From Assimilated Temperature Data

Atmospheric Science Letters, Volume 27, Issue 3, March 2026.
This study estimated Global Climatic Zones (GCZs) during the Last Glacial Maximum (LGM) using assimilated temperature data and the k‐means++ machine learning method for enhanced objectivity. Present‐day GCZ boundaries were determined and then applied to the LGM data, which was 6°C cooler globally. Results showed all LGM zones shifted toward the equator,
Tomohiko Tomita, Daiki Nishioka, Ryu Shimabukuro   +2 more
wiley   +1 more source

Modelling large-scale ice-sheet–climate interactions following glacial inception [PDF]

Climate of the Past, 2012
We have coupled the FAMOUS global AOGCM (atmosphere-ocean general circulation model) to the Glimmer thermomechanical ice-sheet model in order to study the development of ice-sheets in north-east America (Laurentia) and north-west Europe (Fennoscandia)
J. M. Gregory, O. J. H. Browne, A. J. Payne, J. K. Ridley, I. C. Rutt   +4 more
doaj   +1 more source

The northern sector of the last British ice sheet : maximum extent and demise [PDF]

, 2008
Strongly divided opinion has led to competing, apparently contradictory, views on the timing, extent, flow configuration and decay mechanism of the last British Ice Sheet.
Bradwell, Tom, Stoker, Martyn, Golledge, Nicholas, Wilson, Christian Kverneland, Merritt, Jon, Long, David, Everest, Jeremy, Hestvik, O.B., Stevenson, Alan, Hubbard, Alun, Finlayson, Andrew, Mathers, Hannah   +11 more
core   +2 more sources

Supplemental Material: Laurentide Ice Sheet persistence during Pleistocene interglacials

, 2023
<p>Additional information about materials and methods, forward modeling simulations, and data tables. </p>
et al., Danielle E. LeBlanc
openaire   +1 more source

Retracing the Response of Rangifer to Postglacial Climate Change in Arctic Islands

Ecology and Evolution, Volume 16, Issue 3, March 2026.
Our study examines the role of sea ice and glacial retreat in shaping the biogeography of Rangifer tarandus across Arctic islands since the last glacial period. Using mitochondrial DNA analysis and approximate Bayesian computation (ABC) modelling, we found that Arctic island dispersal occurred during the Holocene, with sea ice cover likely influencing ...
Maria Dance, Erin E. Saupe, Alex Farnsworth, Paul J. Valdes, Marc Macias‐Fauria   +4 more
wiley   +1 more source