Study Says Earth's Temp at 400-Year High(DOOMED!!!!)

breitbart.com ^ | June 22, 2006 | JOHN HEILPRIN

[Semus Dynnen]

The scientists said they had less confidence in the evidence of temperatures before 1600. But they considered it reliable enough to conclude there were sharp spikes in carbon dioxide and methane, the two major "greenhouse" gases blamed for trapping heat in the atmosphere, beginning in the 20th century, after remaining fairly level for 12,000 years.

No comment on what caused these spikes. It was not humans that's for sure.

[DuncanWaring]

Climate scientists Michael Mann, Raymond Bradley and Malcolm Hughes had concluded the Northern Hemisphere was the warmest it has been in 2,000 years. Their research was known as the "hockey-stick" graphic because it compared the sharp curve of the hockey blade to the recent uptick in temperatures and the stick's long shaft to centuries of previous climate stability.

Hasn't this been soundly thrashed as being a gross mathematical error?

[Jeff Head]

So, according to these folks 400 years ago the temperature was even higher...and somehow mankind and the rest of the world survived.

[stylin19a]

so, what caused it to get this hot 400 years ago ?

[dakine]

It IS hot today...

[finnman69]

GLOBAL WARMING PRIMER
http://www.clearlight.com/~mhieb/WVFossils/ice_ages.html
http://vathena.arc.nasa.gov/curric/land/global/climchng.html
http://junkscience.com/MSU_Temps/historical_CO2.htm
http://www.geocraft.com/WVFossils/Carboniferous_climate.html

These two figures show former temperatures with major periods of glaciation labeled. The dashed lines are the present global average temperature of about 15° C (59° F). Thus the solid curves show small changes from this average; note that the temperature drops only about 5° C during a glaciation. This has occurred about every 100,000 years, with smaller wiggles in between. That is, there has been a 100,000 year glaciation cycle for the past million years or so, and there may be shorter cycles as well.

The most recent glaciation, 20,000 years ago, is called the Laurentide, and Earth is still recovering from it. This map from the The Illinois State Museum exhibit on ice ages shows the extent of that ice.

The most recent small drop in average temperature caused the Little Ice Age of 1500-1700 AD, which history describes. Mountain glaciers advanced in Europe and rivers like the Thames in England froze solid, which doesn't happen now.

Click image for animation

The growth of the ice sheets began about 120,000 years ago as ice built up on the continents in the Northern Hemisphere, especially in Canada and Europe. The largest extent of these ice sheets occurred 18,000 years ago. At that time the largest ice sheets were between 3.5 and 4 km thick. In North America the largest ice sheet was the Laurentide Ice Sheet centered on Hudson Bay with other sheets centered on Greenland and in the Canadian Rocky Mountains. As these ice sheets expanded they grew together, covering Baffin Bay and eventually the Great Lakes and New England. In northwestern Europe the Fennoscandian Ice Sheet began to grow and expand south to cover what is now Norway and Sweden and north to cover the exposed continental shelf. Over time the ice sheet grew to cover Finland and the United Kingdom. This ice sheet extended east to the Ural Mountains where it met the Siberian Ice Sheet. Before the last ice age ice sheets already existed on Antarctica and on Greenland.

Most people seem surprised when we say current levels are relatively low, at least from a long-term perspective - understandable considering the constant media/activist bleat about current levels being allegedly "catastrophically high." Even more express surprise that Earth is currently suffering one of its chilliest episodes in about six hundred million (600,000,000) years. Given that the late Ordovician suffered an ice age (with associated mass extinction) while atmospheric CO2 levels were more than 4,000ppm higher than those of today (yes, that's a full order of magnitude higher), levels at which current 'guesstimations' of climate sensitivity to atmospheric CO2 suggest every last skerrick of ice should have been melted off the planet, we admit significant scepticism over simplistic claims of small increment in atmospheric CO2 equating to toasted planet. Granted, continental configuration now is nothing like it was then, Sol's irradiance differs, as do orbits, obliquity, etc., etc. but there is no obvious correlation between atmospheric CO2 and planetary temperature over the last 600 million years, so why would such relatively tiny amounts suddenly become a critical factor now?

[COEXERJ145]

Bush's fault for not signing Kyoto!

Women and Minorities Hit Hardest!

/sarcasm

[Gay State Conservative]

So,in other words,the earth was as hot 400 years ago as it is now and civilization didn't have a single SUV or power plant.

[Jake The Goose]

Sooo - what - the Pilgrams were driving SUV's and their coal plants and factories were putting out to much CO2?????

Hmm

[finnman69]

It was all those callous medieval castle dwellers forgetting to blow out their candles and oil lamps.

[dirtboy]

Hasn't this been soundly thrashed as being a gross mathematical error?

Yep - a statistician fed random data sets into the model and got a hockey-stick output for each. It's really quite stunning how propagandists keep churning out discredited information as fact long after it's been trashed.

[Ancesthntr]

We've had many full-blown Ice Ages, and several "little Ice-Ages" over the past several tens of thousands of years. In between, there was "Global Warming." Somehow or other, I don't think it was caused by our 1,000th Great Grandfather Og cutting down a few trees to keep him warm and to cook his food. IOW, it is NATURAL to have variable weather, and life seems to survive this quite well.

The arrogance of the ecology nuts claiming tht Man is responsible is stunning, but it fits right in with their placement of Man above the Creator. The truth is, we are a flyspeck. One good eruption spews more sulpher dioxide into the atmosphere than all of human industrial activity throughout history.

[TChris]

Hasn't this been soundly thrashed as being a gross mathematical error?

Oh yes, repeatedly. The issue has been beaten from many angles, but it's an article of faith with the Progressive (read:Socialist) Left. You don't dare challenge it with facts.

[LIConFem]

It's all that CO₂ leakin' from Algore's pie hole.

[sam_paine]

bttp

[CedarDave]

All you need to know on this (from numerous scientists not associated with AlGore):

1. Global climate changes all the time due to natural causes
2. The human impact still remains impossible to distinguish from this natural 'noise.'

http://www.freerepublic.com/focus/f-news/1653248/posts?page=23#23

[Semus Dynnen]

What caused the earth to warm up and end the ICE AGE?

[AngryJawa]

Unless I see proof of accurate 400 year-old thermometers spread out and constantly monitored across the face of the earth like they are today, I'll take this story as the agenda-driven quest for additional grant money that it is.

[bmwcyle]

Jim we're dead.