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Murray Duffin says:
racookpe1978 says:
Now, the question becomes: Has the 400 year long-term climate cycle peaked between 2000-2010, and we begin the Modern Ice Age?
Or do we continue the long climb up from the Little Ice Age towards a Modern Warm Period peaking in 2060-2070? (Then begin the 450 year decline into the Modern Ice Age?)
Both and neither – see http://www.agwnot.blogspot.com/
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Title of the article which looks interesting...is:
and this website:
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Sunday, January 23, 2011
Four items appeared on WUWT recently that started me on a small project.
1) Someone insisted that climate is chaotic. I think the drivers of climate are deterministic, but their combined results may appear chaotic.
2) There have been recent mentions of the end of the Holocene from Loutre & Berger (2003) at 50,000 years to Piers Corbyn - we are back in an ice age.
3) Don Easterbrooke contributed a somewhat controversial paper that included as Fig 5 an excellent GISP2 ice core graph.
4) Someone posted this link: http://www.roperld.com/science/currentmajorinterglacial.pdf to a paper by Roper that included as fig 2.1 an intriguing comparison of the Eemian with an Antarctic ice core, but GISP2 looks like a better comparison.
These inputs made me wonder if the recent Holocene could be approximated by a few simple variables, and if it might look a bit like the end of the Eemian. I chose 3 regularities that I had identified here: http://www.agwnot.blogspot.com/ that are long enough to give very visible change, that appear with little variability for the last few thousand years, that have widely different frequencies, and that could be reasonably approximated with sine curves; the 60, 179 (Jose) and 1050 year cycles......
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Graphs at the website....