Skip to comments.'Proof' humans cause global warming
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 ...
AP IMPACT: Statisticians reject global cooling
Midges starting to disappear around the same time that Canada is increasing its’ wheat production and use of pesticides. Who is this clown and is his office next door to Ward Churchills?
They can tell that much difference between cores involving 80,000 years and a core involving 50 years???
Ping me if you find one I've missed.
Oh boy more junk science from those with an agenda
I always love it when they revise something by 20 million years or so. Let’s face it....One of these folk has probably hit upon the truth by some accident...We just don’t know which one.
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?
Sorry, ain’t buying it based on that evidence. Try again.
Expected objective scientific thought was overridden by stupid political b.s.
Forgot to add: Correlation is not causation.
To a liberal; Gads, I sneezed after the sun came up. Ergo, the sun caused the sneeze.
(It’s why they’re in politics, not physics.)
Poor leftists... the gig is almost up. More people are on to their nonsense every day.
Despite every Tom, Dick, Harry coming out with their own study, the public is beginning to see this global warming for the fraud that it is.
Find several ‘debunking articles’ the that storyy here:
Something smells very funny here. I believe Baffin was completely glaciated during the last ice age - so how did lake sediments older than 18,000 years survive?
“...on Earth at a time when the Arctic should be cooling because of natural processes.”
Natural processes? These butt nuggets don’t have a clue what the natural processes are or how they affect anything.
More convoluted science from the contrivers of contentious climate. We’d like to believe, therefore we do believe, and our data will demonstrate what we like, because even if it isn’t true, it should be.
Let’s don’t call it Global warming.
Let’s call it an “ Interglacial Period “
since we’ve had several already, and now another.