West Antarctica Warmed Quickly ... 20,000 Years Ago
2013 08 16

By Becky Oskin | LiveScience

The modern meltdown of the Antarctic Ice Sheet mirrors the frozen continent’s big thaw after the last ice age ended 20,000 years ago, a new study finds.

New ice core records from West Antarctica show the huge ice sheet started heating up about 20,000 to 22,000 years ago, 2,000 to 4,000 years earlier than previously thought. But in East Antarctica, which was higher in elevation, colder and drier than the West, the continent stayed in its deep-freeze cycle until 18,000 years ago. The results were published today (Aug. 14) in the journal Nature.

The mismatch between West and East is similar to today’s Antarctica. Modern West Antarctica is one of the fastest-warming places on the planet. The middle of West Antarctica has warmed by 4.4 degrees Fahrenheit (2.4 degrees Celsius) since 1958, three times as fast as the overall rate of global warming. But relatively little warming — half a degree or less — has been measured in East Antarctica.

Looking at how Antarctica melted in response to past climate change can help researchers better predict the ice sheet’s future behavior, said lead study author T.J. Fudge, a doctoral student at the University of Washington. "This most recent deglacial warming is the spot in time we can look at to really understand how our climate goes through big changes," Fudge told LiveScience.

The study is based on an ice core more than 2 miles (3,405 meters) long, covering 68,000 years, the longest U.S. ice core ever drilled. The five-year effort to retrieve the core ended in December 2011. Scientists are only halfway through the ice, having analyzed 30,000 years’ worth of annual layers, according to a statement from the University of Washington.

The authors — a consortium of 42 researchers signed off on the study — suggest that 20,000 years ago, warming in the Southern Ocean melted sea ice around Antarctica. The missing ice meant more storms traveled inland, boosting West Antarctica’s warming.

"West Antarctica is influenced by the ocean much more than the ice up high in East Antarctica, so you are able to see this [warming] happening before you notice it in East Antarctica," Fudge said. "We’re seeing something similar in the modern climate, where West Antarctica seems to be changing more quickly."

[...]

Read the full article at: livescience.com



Related Articles
British scientists offer explanations on "global warming pause"
Global warming caused by CFCs, not carbon dioxide, new study says
Global warming debunked: NASA report verifies carbon dioxide actually cools atmosphere
Climate scientists struggle to explain warming slowdown
Climate Paradox: Longer Antarctic Melt Season May Mean Less Global Warming?


Latest News from our Front Page

Why Can’t We Publish Addresses Of New York Times Reporters?
2014 11 28
New York Times reporters Julie Bosman and Campbell Robertson published the address of Darren Wilson in the New York Times so here are their addresses. GotNews.com strenuously objects to publishing the addresses of individuals who are being targeted with death threats. GotNews.com published the address of Ebola patient Nina Pham so that people could avoid going to her Dallas apartment. But it would ...
Terrorists? Interview with Varg Vikernes and Marie Cachet
2014 11 28
Marie Cachet and Varg Vikernes are what we call commonly ordinary people. However, for motives meanly political, the Ministry of the Interior decided to abuse its power to damage them ; "there is nothing more annoying than a low man placed in high position." (Roman saying) Today, Varg risks the eviction of the French territory without valid ground. Three very ...
The Coudenhove-Kalergi Plan - The Genocide Of The People Of Europe
2014 11 28
Mass immigration is a phenomenon, the causes of which are still cleverly concealed by the system, and the multicultural propaganda is trying to falsely portray it as inevitable. With this article we intend to prove once and for all, that this is not a spontaneous phenomenon. What they want to present as an inevitable outcome of modern life, is actually ...
Starbucks Supports Pro-GMO Company
2014 11 26
Another reason why you should not go to Starbucks. Starbucks has an image of being a socially responsible, environmentally friendly company (Really?). In 2013, 95 percent of their coffee was ethically sourced, and their goal is to reach 100 percent by 2015.1 Other goals include reducing water consumption by 25 percent in their company-operated stores by 20152 and mobilizing their employees and ...
Group Polarization and the Fad of Ethno-masochism
2014 11 26
From "Group polarization: A critical review and meta-analysis". Journal of Personality and Social Psychology. 6 50 (6): 1141--1151 The psychology of White self hatred. Political correctness IS a mental disorder. More: Group polarization: A critical review and meta-analysis. Isenberg, Daniel J. the paper Indoctrinate U Harvard Professor Noel Ignatiev talks about how to end the White race The History of Political Correctness The Narrative: The origins of Political ...
More News »