Medieval Warm Period Was a Global Event

Russ Steele

In the local online global warming blog debates, and in columns in the Union, one of the issues was the Medieval Warm Period (MWP), which cast serious doubt on Mann’s “Hockey Stick” which has been the poster child for the local warmers and the Air Resources Board staff.   First they denied there was a MWP based on the “hockey stick” which use a statistical trick to make it vanish, but the temperature record in Europe demonstrated that it was real. The warmer’s finally had to admit it did exist in Europe, but only in Europe they claimed.

The warmers needed to make the WMP vanish, because it was warmer during the WMP than it has been during the Modern Warming Period, which we are currently experiencing.  Hard to make the case that SUV were responsible for global warming, if the WMP was a global event.

Now there is more peer reviewed evidence that the WMP was a global event in a paper forthcoming in Earth and Planetary Science Letters.  From the Syracuse press release:

The scientists studied ikaite crystals from sediment cores drilled off the coast of Antarctica. The sediment layers were deposited over 2,000 years. The scientists were particularly interested in crystals found in layers deposited during the “Little Ice Age,” approximately 300 to 500 years ago, and during the “Medieval Warm Period,” approximately 500 to 1,000 years ago. Both climate events have been documented in Northern Europe, but studies have been inconclusive as to whether the conditions in Northern Europe extended to Antarctica. . .

“We showed that the Northern European climate events influenced climate conditions in Antarctica,” Lu says. “More importantly, we are extremely happy to figure out how to get a climate signal out of this peculiar mineral. A new proxy is always welcome when studying past climate changes.”

How inconvenient for the warmers.  They’ll have to think up some new talking point to make the MWP insignificant.

H/T to Power Line for reporting on this paper.



About Russ Steele
Freelance writer and climate change blogger. Russ spent twenty years in the Air Force as a navigator specializing in electronics warfare and digital systems. After his service he was employed for sixteen years as concept developer for TRW, an aerospace and automotive company, and then was CEO of a non-profit Internet provider for 18 months. Russ's articles have appeared in Comstock's Business, Capitol Journal, Trailer Life, Monitoring Times, and Idaho Magazine.

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