Pleistocene Glacial Variability as a Chaotic Response to Obliquity Forcing
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Pleistocene Glacial Variability as a Chaotic Response to Obliquity Forcing
| Title: | Pleistocene Glacial Variability as a Chaotic Response to Obliquity Forcing |
| Author: | Huybers, Peter John |
| Citation: | Huyber, Peter J. 2009. Pleistocene glacial variability as a chaotic response to obliquity forcing. Climate of the Past 5(3): 481-488. |
| Full Text & Related Files: |
Huybers_ChaoticObliquity.pdf (5.663Mb; PDF) 
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| Abstract: | The mid-Pleistocene Transition from 40 ky to ~100 ky glacial cycles is generally characterized as a singular
transition attributable to scouring of continental regolith or a long-term decrease in atmospheric CO2 concentrations. Here an alternative hypothesis is suggested, that Pleistocene glacial variability is chaotic and that transitions from 40 ky to ~100 ky modes of variability occur spontaneously. This alternate view is consistent with the presence of ~80 ky glacial cycles during the early Pleistocene and the lack of evidence for a change in climate forcing during the mid-Pleistocene. A simple model illustrates this chaotic scenario. When forced at a 40 ky period the model chaotically transitions between small 40 ky glacial cycles and larger 80 and 120 ky cycles which, on average, give the ~100 ky variability. |
| Published Version: | www.clim-past.net/5/481/2009/ |
| Terms of Use: | This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:3356136 |
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