A 1240-Year Record of Arctic Temperatures
And here's the guy who's been keeping those records all these years!
Posted on 12/17/2004 2:27:50 AM PST by Exton1
A 1240-Year Record of Arctic Temperatures
Reference
Moore, J.J., Hughen, K.A., Miller, G.H. and Overpeck, J.T. 2001. Little Ice Age recorded in summer temperature reconstruction from varved sediments of Donard Lake, Baffin Island, Canada. Journal of Paleolimnology 25: 503-517.
What was done
Lake sediment cores from Donard Lake, Baffin Island, Canada (approximately 66.25°N, 62°W), were analyzed to produce a 1240-year record of average summer temperatures for this region.
What was learned
Over the entire 1240-year period from 750-1990 A.D., summer temperatures averaged
2.9°C. Anomalously warm decades with summer temperatures as high as 4°C occurred around 1000 and 1100 A.D. At the beginning of the 13th century, Donard Lake witnessed "one of the largest climatic transitions in over a millennium," as "average summer temperatures rose rapidly by nearly 2°C from 1195-1220 A.D., ending in the warmest decade in the record" with temperatures near 4.5°C.
The rapid warming of the 13th century was followed by a period of extended warmth that lasted until an abrupt cooling event occurred around 1375 A.D. The decade following 1375 A.D. was one of the coldest in the record and represented the onset of the Little Ice Age on Baffin Island, which lasted for 400 years. At the modern end of the record, a gradual warming trend occurred over the period 1800-1900 A.D., followed by a dramatic cooling event in 1900 that brought temperatures back to levels consistent with the Little Ice Age, which lasted until about 1950. Temperatures warmed during the 1950s and 1960s, whereupon they have trended toward cooler conditions to the present.
What it means
Large abrupt swings in temperature appear to be a consistent feature of climate in this region of the world, with temperatures rising and falling by as much as 2°C in as short a time period as a decade. Such natural temperature variability demonstrates the high degree of difficulty associated with attempting to separate effects of anthropogenic climatic forcing from those of natural causes.
In contradiction of politically-correct climatology, the study also demonstrates the existence of both the Medieval Warm Period and Little Ice Age on Baffin Island. And it stands in stark contrast to the climate alarmist claim that the latter part of the 20th century experienced "unprecedented" warming, at least in this part of the world, which is, however, where such anthropogenic phenomena are supposed to be most evident.
Page printed from: http://www.co2science.org/journal/2001/v4n32c1.htm
LOL! Some of us can still calculate mutual conductance (gm)
and explain space charge compensation on these old critters.
I don't believe any of this.
Of course! That's a no-brainer!
Everytime I drive to downtown Houston it takes me longer.
I've always known it was because the distance was expanding!
Did you like the long winded way they took to say the tube had a high Avol ?! Where's Philbrick-Nexus when you need them?
--Boot Hill
Global warming created by those dang Europeans and their SUVs! ;o)
Watching TLC a few nights ago, some guys were trying to find an old city high in the Andes from the description of "a big white rock". The natives kept saying, no white rock around here.
They finally found it, but the white rock had lichen growing all over it with no one around for 400 years to keep it cleaned off.
The one and only reason that the globalwarmingwhackos have steadfastly maintained that the Medieval Warming was not world wide is that the Science showing the warming there is Absolutely Irrefutable. When someone devises an equally good way of establishing that it was, in fact, worldwide, they'll figure out some other way to lie and obfuscate to their moronic target masses. I've yet to hear any of their vaunted "models" demonstrate any possible methodology for maintaining a warm Arctic for centuries without other major climactic ramifications, but their "faith" allows them to simply 'know' that earth is warmer now than ever before - because man's activities 'clearly' makes it that way.
It is amazing that those brilliant and super-advanced Islamists and Chinese and Africaners and Native Americans didn't maintain weather records during the 10th-17th Century so they could show how steady the global temperatures were for today's envirowhackos. A mere oversight on their parts, I suppose.
BTTT!!!!!!!
Should we be turning off our ceiling fans to conserve air? I've been debating this for five years. And I've been wondering if its better for us to exit the truck via one door, instead of taking air out of the truck via two doors. I think this would increase the air supply by 3 percent if we could all adopt to my measures.
Any fool that throws "so-called" facts out on the table concerning 10,000 years ago...I automatically dismiss their argument. You can't prove very much...except tree rings in Redwoods or Artic ice collection...which doesn't really tell an entire picture.
Actually, Dan Rather has received a PowerPoint presentation from Leif Ericson complaining about glaciers melting and taking all the fun out his luge runs.
That is quite a load. Wide, too.
Who told you that?
The Baffin Island record only goes until 1990. From the late 1800s to present (I think that they say the instrumented record is 108 years long (?), six of the 10 warmest years on record occur SINCE 1990. 2004, according to the World Meteorological Organization, will be the fourth-warmest year on record, after 1998, 2002, and 2003.
The Role of the Sun in 20th Century Climate Change
The human impact of Vikings on the environment should be noted. When it got warmer the Vikings traveled farther. When it got colder, they didn't. Therefore the Vikings (human technology) caused the global warming and now their anscestors feel guilt and remorse and will leave no oil well unturned to make amends for their sins.
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