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Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years

 
theresident
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09/25/2006 11:13 PM
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Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years, scientists reported today.

In a study that analyzed temperatures around the globe, researchers found that Earth has been warming rapidly, nearly 0.36 degrees Fahrenheit (0.2 degrees Celsius) in the last 30 years [chart].

"The average surface temperature is 15, maybe 16 degrees Celsius (60 degrees Fahrenheit)," said Alan Robock, a meteorologist and climate researcher from Rutgers University who was not involved with the study.

If global temperatures go up another 1.8 degrees Fahrenheit (1 degree Celsius), it would be equal to the maximum temperature of the past million years.

"This evidence implies that we are getting close to dangerous levels of human-made (anthropogenic) pollution," said study leader James Hansen of NASA's Goddard Institute for Space Studies.

'A different planet...'

According to the U.S. Environmental Protection Agency, human-made greenhouse gases are responsible for most of the warming of the last 50 years. The gasses, released by burning of fossil fuels and land clearing among other factors, trap heat in the atmosphere and warm Earth's surface.

Further global warming of 1.8 degree Fahrenheit (1 degree Celsius) defines a critical level, Hanson said.

Robock agrees that temperatures are getting up there.

"It's certainly the warmest it's been in the last couple of thousand years," Robock said. "I don't have access to the data about the last million years but it's probably right. I just haven't looked at it in detail."

"During the warmest interglacial periods the Earth was reasonably similar to today. But if further global warming reaches 2 or 3 degrees Celsius, we will likely see changes that make Earth a different planet than the one we know," he said. "The last time it was that warm was in the middle Pliocene, about three million years ago, when sea level was estimated to have been about 25 meters [80 feet] higher than today."

The study also notes that global warming is greatest at higher latitudes near the poles. This is because when the Earth warms, snow and ice melt, uncovering darker land and ocean surfaces. Instead of the once-white surface that reflected solar rays back into space, the darker surfaces now absorb more energy from the sun.

Mass migration

Although warming is most noticeable at the poles, higher latitudes are still among the coolest spots around. For animals and plants that can only survive within certain cool temperature ranges these are the only places to go as their current homes become intolerably warm.

In a 2003 study, scientists showed that 1,700 plant and animal species migrated toward the poles at about 4 miles per decade in the last 50 years.

That migration rate is not fast enough to keep up with the current rate of movement of a given temperature zone, which has reached about 25 miles (40 kilometers) per decade in the period 1975 to 2005, Hanson and co-authors write in the current issue of the journal Proceedings of the National Academy of Sciences.

"Rapid movement of climatic zones is going to be another stress on wildlife," Hansen said. "It adds to the stress of habitat loss due to human developments. If we do not slow down the rate of global warming, many species are likely to become extinct. In effect we are pushing them off the planet."

[link to www.livescience.com]
Anonymous Coward
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09/25/2006 11:36 PM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
they are also dangerously close to the lowest they have ever been

didn't you hear about the cold records broken in the southern hemisphere this last winter?
Dino1

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09/25/2006 11:45 PM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
More politically manipulated global warming alarmist bullshit so they can legislate how we live.

Fuck Al Gore and the others trying to cash in on Global warming
DanG
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09/25/2006 11:48 PM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
info for peeps with brain cells
[link to www.climatepatrol.com]

MORONS need not apply
hoot no more
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09/25/2006 11:59 PM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
Yah, and 80% of the time in the last million years we have been freezing our ass' off in a ICE AGE! The earth is normally 10-15 degrees warmer than it is now throughout 98%+ of the time in the last BILLION years! Ice Ages are very rare events, looking at things in the long term.
Anonymous Coward
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09/25/2006 11:59 PM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
persistant contrails melted the arctic

why do they ignore this fact?
Anonymous Coward
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09/26/2006 12:57 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
art is not weather
Ningishiddza

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09/26/2006 01:01 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
If global temperatures go up another 1.8 degrees Fahrenheit (1 degree Celsius), it would be equal to the maximum temperature of the past million years.
 Quoting: theresident


1 Million years represents a whopping 0.02% of the Earth's existence.
Americanii-s de vina futu-i in gura sa-i fut
Claycat
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09/26/2006 01:03 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
More politically manipulated global warming alarmist bullshit so they can legislate how we live.

Fuck Al Gore and the others trying to cash in on Global warming
 Quoting: Dino1


I would like to say, I can't wait to tell you I told you so. But if I told you that, that would mean the end of this earth as we know it. So, I'm just going to tell you to shut the fuck up.
Anonymous Coward
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09/26/2006 01:10 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
You can bet TPTB have a contingency plan to save themselves if things go very badly.

All you people who whine about the imposition of rules and responsibility take heed: if the world takes a turn down you and your family are expendable. The ruling class will snuff you out in a nanosecond without hesitation if it comes down to their continued survival and privilege. Go ahead and keep your head in the sand until some biological weapon snuffs you out.
Dino1

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09/26/2006 01:11 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
LOL claycat and when in 10 years the alarmists are talking about the next ice age the way they did in the 70s you will understand what I am talking about.
Claycat
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09/26/2006 01:24 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
Actually, Dino, the result of global warming is a premature ice age.

I'm sorry I spoke to you in an ugly way, but I live 12 miles south of ALCOA's largest aluminum smelting plant. They have destroyed our aquifer. Our water tastes terrible. Our air is bad because of the 24/7 coal burning. Every day when I drive to work, I have to see the mounds of crud the huge cranes are digging. All the beautiful trees in that area are long gone. ALCOA is turning this place into a wasteland.
Dino1

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09/26/2006 01:31 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
The real cause of global warming

[link to www.judgesamuelaalito.com]
Dino1

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09/26/2006 01:35 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
Claycat I have read a great many articles on global warming.

Most say it is occurring and others no.

Then many say it is not caused by man.

I have read articles saying it is due to the sun being more active and is causing warming on other planets in the solar system.

My belief is that the weather fluctuations are cyclical.

I am not for pollution just highly skeptical of Gore's motivation as there is much money to be made with global warming legislation.
Dino1

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09/26/2006 01:38 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
Here are a few articles from space.com on increased solar activity and

We are at the mercy of the physics of the solar system and galaxy.

[link to www.space.com]

[link to www.space.com]
Anonymous Coward
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09/26/2006 02:59 PM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
it is proven that persistant contrails melted the arctic
not cars and trucks
Anonymous Coward
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09/27/2006 01:45 AM
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Re: Global temperatures are dangerously close to the highest ever estimated to have occurred in the past million years
bump





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