S. America MWP

With a h/t to George, this is a very important little report:

http://nipccreport.org/articles/2011/dec/14dec2011a4.html

South American MWP Reconstruction

Original in the article.

In particular, notice how steep the drop is from warm to cold about 1400 AD. About 50 years as I eyeball it. Long slow rises, but rapid crashes. A Sawtooth with the ‘cut to cold’ being very fast.

Adding in that this pretty much shows the present “warming” is entirely an artifact of a baseline in the Little Ice Age and that the Medieval Warm Period was global and it’s a pretty damning set of evidence for The Team to deal with. (Expect sudden character attacks on the authors, difficulty in future publishing, editors of journals getting blackmail type threats, and general derision. Oh, and no free tickets to the Global Warming Buffet wherever they have it next now that Rio, Berlin, Geneva, Koyoto, Buenos Aries, Bonn, The Hague, Bonn (again), Marrakesh, New Delhi, Milan, Buenos Aires (again), Montreal, Nairobi, Bali, Poznań, Copenhagen, Cancún, Durban are out of the way… at least if the ClimateGate One and Two email are any guide.)

Why can’t these folks just meet in, say, Detroit or maybe Nome each winter?… How many poor could be fed on their feasts and how much carbon are these folks squandering Jet Setting around the world?

I wish this chart had gone back just a little further so we could have seen the length of the prior ramp up from its prior low point. While we could generalize from the Dark Ages at somewhere around a 540 AD entry and a 600 ish AD bottom, but that would be a guess. There could be an offset between the hemispheres.

Don’t like that “dip” in about 1150 AD where it’s ‘3 counts to out’ and how that matches up with our “dip” in 1850 with our “3 counts out” of the recent three peaks. Yes, it’s “just wiggle matching”… but it is inside a clear context… This all matters since if it’s an 800 year cycle ( 600 to 1400 AD ) we’ve got a long ways to go. 1400+800 = 2200 AD.

IF it’s a 700 year Smith Event cycle (half Bond Event) we have significantly less. 1400+700= 2100 AD. If it’s driven by solar trefoil patterns, then we’re toast starting in about 2020. A bit more context would have been nice… (Yet Another “Dig Here!” prior cold period in S.South America… 540 AD? 400 AD? 600 AD?)

For now, though, it is enough just to see the Medieval WARM Period shown to be global, and warmer than today.

The international research team — composed of scientists from Argentina, Chile, Germany, Switzerland, The Netherlands, the United Kingdom and the United States — write that their summer temperature reconstruction suggests that “a warm period extended in SSA from 900 (or even earlier) to the mid-fourteenth century,” which they describe as being temporally located “towards the end of the Medieval Climate Anomaly as concluded from Northern Hemisphere temperature reconstructions.” And as can be seen from the figure below, the warmest decade of this Medieval Warm Period was calculated by them to be AD 1079-1088, which as best as can be determined from their graph is about 0.17°C warmer than the peak warmth of the Current Warm Period.

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