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'Proof' humans cause global warming
Courier Mail ^ | 10/20/09 | From correspondents in Washington

Posted on 10/26/2009 1:08:59 PM PDT by NormsRevenge

SEDIMENT cores from a small Arctic lake in Canada stretching back 200,000 years show unprecedented gains in global warming since 1950, indicating human activity is the likely cause.

"The past few decades have been unique in the past 200,000 years in terms of the changes we see in the biology and chemistry recorded in the cores,'' University of Colorado glaciologist Yarrow Axford said.

"We see clear evidence for warming in one of the most remote places on Earth at a time when the Arctic should be cooling because of natural processes."

Mr Axford is the chief author of the study published in the Proceedings of the National Academy of Sciences.

For thousands of years, environmental changes in a remote lake on Canada's Baffin Island closely matched natural, cyclical climate changes such as those caused by the Earth's periodic wobble as it swings around the sun, the researchers said.

However, lake sediment cores dating from 1950 show that expected climate cooling was overridden by human activity like greenhouse gas emissions.

Researchers were able to reconstruct the local climate over the past 200,000 years by analysing algae, insect fossils and geochemical traces in sediment cores extracted from the 40ha lake.

The cores stretch back 80,000 years further than existing Greenland ice cores, revealing environmental conditions prevalent during two earlier Ice Ages and three interglacial periods.

Researchers found that several types of mosquito-like midges that for many thousands of years thrived in cold climate surrounding the lake suddenly began declining at around 1950; two midge species adapted to the coldest weather disappeared altogether.

(Excerpt) Read more at news.com.au ...


TOPICS: Business/Economy; Culture/Society; Your Opinion/Questions
KEYWORDS: agw; climatechange; copenhagen; globalwarming; hopenhagen; humans; proof
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To: DoughtyOne

21 posted on 10/26/2009 1:28:24 PM PDT by shineon
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To: NormsRevenge
at a time when the Arctic should be cooling because of natural processes

No, we're still warming from the last glacial period. Plus, we're still warming from the Little Ice Age.

Researchers were able to reconstruct the local climate over the past 200,000 years by analyzing algae, insect fossils and geochemical traces in sediment cores extracted from the 40ha lake. The cores stretch back 80,000 years further than existing Greenland ice cores,

200,000 years is 80,000 longer than Greenland??? The Greenland cores actually go back more than 400,000 years and through four cycles. Is this guy lying or is he that ignorant?

22 posted on 10/26/2009 1:31:36 PM PDT by colorado tanker (Mr. Flyingsaucerballoonboymediawhoreman - this Bud's for you!)
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To: NormsRevenge

How do they assume we caused it? Maybe it just occured about that time and we got blamed for it.


23 posted on 10/26/2009 1:31:46 PM PDT by GingisK
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To: shineon

“Yes officer, that’s more or less what he looked like. He was muttering something about Florida at the time...”

Heh heh heh... I like it.


24 posted on 10/26/2009 1:32:14 PM PDT by DoughtyOne (Deficit spending, trade deficits, unsecure mortages, worthless paper... ... not a problem. Oh yeah?)
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To: NormsRevenge
However, lake sediment cores dating from 1950 show that expected climate cooling was overridden by human activity like greenhouse gas emissions.

In the 1970s they were doing their best to scare us all about the coming ice age. Looks like we saved ourselves from freezing to death with all of our human activity.

Or were they wrong about the ice age? Or are they wrong about human activity causing climate change?

Personally, I think they need a diaper change. It's clear they have nothing but sh1t for brains and they've pooped themselves all the way to imbecility.

25 posted on 10/26/2009 1:32:24 PM PDT by GBA
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To: NormsRevenge

Unprecedented? That’s an outright lie on the face of it. The Medieval Warm Period was still warmer than it is today.


26 posted on 10/26/2009 1:34:49 PM PDT by Seruzawa (If you agree with the French raise your hand - If you are French raise both hands.)
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To: NormsRevenge
If you just sample 200000 years you might conclude that, but the earth and the solar system work on a much different time scale. It is clear from the Vostok 420000 year ice core sample that there is a recurring pattern of about a 120,000 years. http://en.wikipedia.org/wiki/Ice_core I wonder how much human activity contributed to it 120,000, 240,000, 360,000 years ago? None!!!!

It is interesting that other planets have in our solar system have gone through the same warming cycle, and they have no humans on them. Hmm....could it be the sun?!!

Also for those who understand basic science, CO2 is a regulating cooling gas that absorbs long wavelength radiation. What happens to a gas that warms? It rises and pulls the heat AWAY from the surface to the upper atmosphere. At night when there is no sun the CO2 cools and falls back to earth to be absorbed by plants, the oceans, etc.

You want to save the planet, plant a tree.
27 posted on 10/26/2009 1:36:15 PM PDT by voveo
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To: Da Coyote

But the sun always makes me sneeze. It’s a neurological phenomenon that doctors can’t really explain. I think it’s a natural reaction to keep one from staring at the sun. Or maybe it’s limited to people with light eyes.


28 posted on 10/26/2009 1:39:44 PM PDT by DallasDeb (USAFA '06 Mom)
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To: Da Coyote
I am shocked, just shocked that you would reject this "evidence" as anything but fact. It feels so good, so warm and fuzzy, so nice. You know, so mmmmm mmmmm mmmmm.
29 posted on 10/26/2009 1:42:14 PM PDT by Williford
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To: NormsRevenge

Hah! What about the middle ages warming period that lasted from the 1100’s thru the 1500’s?


30 posted on 10/26/2009 1:42:16 PM PDT by keithtoo
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To: maryz
So these midges flourished through the Medieval Warm Period? And survived the Global Warming scare of the 1930s? Only to fall victim to AGW in 1950. Too bad they couldn't have held on to the Coming Ice Age of the 1970s!

Is it just me or are the champions of AGW getting nuttier and nuttier?

Nuttier by the hour.

I wonder how many thousands of things beside Al Gore's global warming could have been responsible for the demise of the midges?

31 posted on 10/26/2009 1:52:48 PM PDT by RJL
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To: DallasDeb
But the sun always makes me sneeze. It’s a neurological phenomenon that doctors can’t really explain. I think it’s a natural reaction to keep one from staring at the sun. Or maybe it’s limited to people with light eyes.

It's certainly not limited to people with light eyes - my eyes are quite dark and sunlight triggers sneezes in me. I seem to recall it being referred to as a "photic sneeze" (triggered by light).

I've read some speculation that it's a holdover response to first seeing the sun after emerging from a dark cave. The sneeze would supposedly clear the nose of accumulated junk from being in the cave.

32 posted on 10/26/2009 1:56:24 PM PDT by Bob
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To: NormsRevenge
Two things.

1.) How do they determine "GLOBAL" trends from the experience of one isolated place. They always said you can't tell how hot it's getting whenever there's a cold snap.

2.)They have 200,000 years of sediment cores they have taken. There is no way they can devine a 60 year trend in that. 1,000 years maybe, 10,000 years probably, yet they only have the current records going back 60 years.

People see what they want to see.

33 posted on 10/26/2009 1:57:48 PM PDT by sharkhawk (Always love your country—but never trust your government--Robert Novak)
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To: keithtoo

Details Details!

now that was a chunk of ice .. a big one, the one that covered part of europe.. brrrrr

http://www.metatech.org/07/ice_age_global_warming.html
Ice ages happen with regularity every 11,500 years. The last mini ice age ended almost 11,500 years ago


34 posted on 10/26/2009 2:04:01 PM PDT by NormsRevenge (Semper Fi ... Godspeed .. Monthly Donor Onboard)
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To: Bob; DallasDeb

I’ve always thought it might be that the sensors or nerves for the sinuses and the eyes are so close together that sometimes the signals get “crossed”. And an eye irritant (the bright sun) sometimes gets picked up as nasal irritation. I often will look at a ceiling light to get out a hesitant sneeze to give it an extra “push”!


35 posted on 10/26/2009 2:04:46 PM PDT by 21twelve (Drive Reality out with a pitchfork if you want , it always comes back.)
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To: colorado tanker
The Greenland cores actually go back more than 400,000 years and through four cycles. Is this guy lying or is he that ignorant?

Please fill us in on which of the Greenland stations went as far back as Vostok.

36 posted on 10/26/2009 2:06:11 PM PDT by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: Bob

a holdover response to first seeing the sun after emerging from a dark cave. The sneeze would supposedly clear the nose of accumulated junk from being in the cave.

cool. an auto-hock-a-loogie gene..


37 posted on 10/26/2009 2:07:08 PM PDT by NormsRevenge (Semper Fi ... Godspeed .. Monthly Donor Onboard)
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To: 21twelve

Yep, helps me to (i.e., light inside helps to get a sneeze out).


38 posted on 10/26/2009 2:07:26 PM PDT by DallasDeb (USAFA '06 Mom)
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To: sharkhawk

Note that they are actually measuring isotopes.


39 posted on 10/26/2009 2:07:57 PM PDT by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: sharkhawk

Oops, I was misreading the thread. Thought you were referring to the ice cores. My mistake.


40 posted on 10/26/2009 2:09:02 PM PDT by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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