TV News LIES

Sunday, May 29th

Last update05:20:13 AM GMT

You are here News Environment Arctic Temperatures Highest in at Least 44,000 Years

Arctic Temperatures Highest in at Least 44,000 Years

E-mail Print PDF

Arctic temperaturesPlenty of studies have shown that the Arctic is warming and that the ice caps are melting, but how does it compare to the past, and how serious is it?

New research shows that average summer temperatures in the Canadian Arctic over the last century are the highest in the last 44,000 years, and perhaps the highest in 120,000 years.

"The key piece here is just how unprecedented the warming of Arctic Canada is," Gifford Miller, a researcher at the University of Colorado, Boulder, said in a joint statement from the school and the publisher of the journal Geophysical Researcher Letters, in which the study by Miller and his colleagues was published online this week. "This study really says the warming we are seeing is outside any kind of known natural variability, and it has to be due to increased greenhouse gases in the atmosphere."

The study is the first to show that current Arctic warmth exceeds peak heat there in the early Holocene, the name for the current geological period, which began about 11,700 years ago. During this "peak" Arctic warmth, solar radiation was about 9 percent greater than today, according to the study.

Miller and his colleagues gauged Arctic temperatures by looking at gas bubbles trapped in ice cores (cylinders drilled from the ice that show layers of snow laid down over time) taken from the region, which allows scientists to reconstruct past temperature and levels of precipitation. They paired this with radiocarbon dating of clumps of moss taken from a melting ice cap on Canada's Baffin Island. Their analysis shows that these plants have been trapped in the ice for at least 44,000 years, and perhaps as long as 120,000 years. Taken together, that data suggest temperatures in the region haven't been this high since perhaps as long as 120,000 years ago, according to the study.

More...


Most Recent Related Stories...


Oil sands industry a major source of air pollution, study finds

oil sands polluteTar sands oil, sometimes called the dirtiest oil in the world, is mostly thought of as...

Baseline sought for British fracking efforts

Fracking in UKA British geological organization said it was working to set an environmental baseline to serve as...

Chemical Reform Law Falls Short in Protecting Public Health, Environment

Chemical reform act insufficientPassage of the first legislation to regulate toxic industrial chemicals in 40 years ought to be...

Pipeline company blamed directly for Refugio Beach, Calif., oil spill

California oil spillPreventable errors on the part of Plains All American Pipeline led to last year's oil spill...
 
America's # 1 Enemy
Tee Shirt
& Help Support TvNewsLIES.org!
TVNL Tee Shirt
 
TVNL TOTE BAG
Conserve our Planet
& Help Support TvNewsLIES.org!
 
Get your 9/11 & Media
Deception Dollars
& Help Support TvNewsLIES.org!
 
The Loaded Deck
The First & the Best!
The Media & Bush Admin Exposed!