A movable trigger: Fossil fuel CO2 and the onset of the next glaciation

@article{Archer2005AMT,
  title={A movable trigger: Fossil fuel CO2 and the onset of the next glaciation},
  author={David Archer and Andrey Ganopolski},
  journal={Geochemistry},
  year={2005},
  volume={6}
}
The initiation of northern hemisphere ice sheets in the last 800 kyr appears to be closely controlled by minima in summer insolation forcing at 65°N. Beginning from an initial typical interglacial pCO2 of 280 ppm, the CLIMBER‐2 model initiates an ice sheet in the Northern Hemisphere when insolation drops 0.7 σ (standard deviation) or 15 W/m2 below the mean. This same value is required to explain the history of climate using an orbitally driven conceptual model based on insolation and ice volume… 

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References

SHOWING 1-10 OF 43 REFERENCES

Transient simulation of the last glacial inception. Part I: glacial inception as a bifurcation in the climate system

We study the mechanisms of glacial inception by using the Earth system model of intermediate complexity, CLIMBER-2, which encompasses dynamic modules of the atmosphere, ocean, biosphere and ice

The sequence of events surrounding Termination II and their implications for the cause of glacial‐interglacial CO2 changes

Events surrounding Termination II, as preserved in the Vostok ice core, provide a number of clues about the mechanisms controlling glacial to interglacial climate change. Antarctic temperature and

The timing of major climate terminations

  • M. Raymo
  • Environmental Science, Geography
  • 1997
A simple, untuned “constant sedimentation rate” timescale developed using three radiometric age constraints and eleven δ18O records longer than 0.8 Myr provides strong support for the validity of the

Future Climatic Changes: Are We Entering an Exceptionally Long Interglacial?

Various experiments have been conducted using theLouvain-la-Neuve two-dimensional Northern Hemisphereclimate model (LLN 2-D NH) to simulate climate for thenext 130 kyr into the future. Simulations

The timing of Pleistocene glaciations from a simple multiple-state climate model

The Earth's climate over the past million years has been characterized by a succession of cold and warm periods, known as glacial–interglacial cycles, with periodicities corresponding to those of the

The Dynamic Response of the Greenland and Antarctic Ice Sheets to Multiple-Century Climatic Warming

New calculations were performed to investigate the combined response of the Greenland and Antarctic ice sheets to a range of climatic warming scenarios over the next millennium. Use was made of fully

Carbon cycle, vegetation, and climate dynamics in the Holocene: Experiments with the CLIMBER‐2 model

Multiple proxy data reveal that the early to middle Holocene (ca. 8–6 kyr B.P.) was warmer than the preindustrial period in most regions of the Northern Hemisphere. This warming is presumably

Sensitivity of glacial inception to orbital and greenhouse gas climate forcing.

The Anthropogenic Greenhouse Era Began Thousands of Years Ago

The anthropogenic era is generally thought to have begun 150 to 200 years ago, when the industrial revolution began producing CO2 andCH4 at rates sufficient to alter their compositions in the