Man changed climate for 8,000 years?

CNN/Associated Press ^ | Wednesday, December 10, 2003

[anymouse]

Beginning 8,000 years ago, atmospheric levels of carbon dioxide began to rise as humans started clearing forests, planting crops and raising livestock, a scientist said Tuesday. Methane levels started increasing 3,000 years later.

The combined increases of the two greenhouse gases implicated in global warming were slow but steady and staved off what should have been a period of significant natural cooling, said Bill Ruddiman, emeritus professor at the University of Virginia.

[anymouse]

More inconvenient facts getting in the way of liberal global whining. :)

[Prof Engineer]

Gee, revisionist history strikes quickly. This morning it was 10,000 years. By tomorrow, it'll have started in 1981.

[Lil'freeper]

Crazy thing is, those were the idyllic days when mankind lived in perfect harmony with the pristine, Eden-like "Gaia". The envirowackos will be deeply saddened.

[11th Earl of Mar]

In other words, if we reduce auto emissions to the same level as 8000 years ago, it still won't help.

[Izzy Dunne]

The prehistoric practices apparently overrode a buildup of ice that models predict should have occurred beginning 5,000 years ago.

I don't suppose anybody thought that maybe the model is wrong?

[Lucky Dog]

Isn't this story just the cow fart theory revisited and updated?

[Roughneck]

>>>>The combined increases of the two greenhouse gases implicated in global warming were slow but steady and staved off what should have been a period of significant natural cooling, said Bill Ruddiman, emeritus professor at the University of Virginia<<<<

How does this "professor" presume to know what should or should not have been happening to this planet?

No human being, no matter how educated, can acurately predict when it will rain or not rain, whether spring will begin on the 21st or the 22nd, etc...if we cant even predict the weather, what sort of ego can claim to know WHY or IF global warming is occuring...

How do we know or not if, in 1000 more years, "scientists" will probably discover the great benefit of global warming...geez...political, socialists hacks need to shut up about global warming. .

[ConservativeDude]

only a REAL scientist could discover the previously unknown link between livestock and methane.....truly groundbreaking!

[Prof Engineer]

ROFLOL. It's interesting watching hungry acedemics twist stuff around in order to keep gettng grant money.

[ancient_geezer]

Measurements of ancient air bubbles trapped in Antarctic ice offered evidence that humans have been changing the global climate since thousands of years before the industrial revolution.

Beginning 8,000 years ago, atmospheric levels of carbon dioxide began to rise as humans started clearing forests, planting crops and raising livestock, a scientist said Tuesday. Methane levels started increasing 3,000 years later.

 

8000 years?? LOL, The Vostok ice cores show that CO2 has always increased after increasing temperature. Mainly from release from solution from oceans, increase in biomass (animals & decaying/burning vegetation, etc.)

[Egregious Philbin]

More inconvenient facts getting in the way of liberal global whining.

These are all "facts," but the many scientific articles demonstrating climate change is all hooey? Politics and science make strange bedfellows. This article doesn't disprove anything about the current level of climate change.

[Voltage]

I am thankful, because not that long ago (in geological terms) where I am typing this (in Northern Minnesota) the ice was a mile thick.

If it wasn't for those SUV's and coal fired power plants back then this area would be still covered with ice.

Or it could be that the sun just warmed up a bit.

[Lucky Dog]

Which leads us to the cure for global warming: Beano for ruminants. Let's start a research foundation. It would, no doubt, be as successful as the last public organizations announcement for the cure for AIDS and drug addiction... "Just say no." Come to think of it, I think that is the real cure for global warming... just say no to idiotic pronouncements concerning eco-pseduo-science.

[Prof Engineer]

My vote is for sun, since we haven't uncovered any SUV's more than a century old. Yet.

[Ditto]

Isn't this story just the cow fart theory revisited and updated?

Sounds like it to me. What about the methane from those teaming herds of pre-historic bison, mammoths and other critters that man hunted to extinction. Weren't they simply rolling back greenhouse gas emissions?

These guys a grasping at straws now. They can't document their 20th century temp model so they invent a new fake model. Less than a million humans on earth 8000 years ago with very slow population growth were able to warm the global climate, but when global population started to take off big time in the early 17th century, we had two centuries of global cooling! Maybe they should model that.

[dead]

Man should never have invented fire. Then all the trees would never die.

[Mr. Mojo]

You mean global warming isn't just the fault of rich, white, straight men from the Industrial Age?

[trebb]

The chart makes it clear - warmer temperatures cause higher levels of CO2 and lower temperatures cause the CO2 concentration to go down.

[Lucky Dog]

So... Are you signing up for the Cow Beano research foundation? I am willing to take as many employees as a research grant from PETA or Earth-First will support.

[shotgun]

It amazes me that the "scientists" were able to isolate man made Carbon Dioxide from the natural emissions.