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Wed really like a heavy icebreaker so that no matter what the season, even in midwinter, we have the capability to go where we need to go, says Julie Brigham-Grette, a palaeoclimatologist at the University of Massachusetts in Amherst who chairs a national polar research board.
Results of analyses by an international team led by Julie Brigham-Grette of the University of Massachusetts Amherst provides "an exceptional window into environmental dynamics" and have "major implications for understanding how the Arctic transitioned from a forested landscape without ic
Date: May 11, 2013
Category: Sci/Tech
Source: Google
Study: Arctic Had 'Exotic Trees,' Forests Millions of Years Ago
According to lead researcher Julie Brigham-Grette, the trees likely grew there between 2.2 and 3.6 million years ago, during an era known as the Pliocene. The Arctic was approximately 14.4 degrees warmer than it is now, with summer temperatures reaching the low 60s. At the time, carbon levels in the
Date: May 10, 2013
Category: Sci/Tech
Source: Google
Ice-Free Arctic in Pliocene, Last Time CO2 Levels above 400 PPM
This lake is special because glaciers did not cover it and shield it from sediment, a process that often removes a lot of the material geologists look for in a sediment core, said Julie Brigham-Grette, the study's lead author and a quaternary geologist at the University of Massachusetts, Amherst.
Date: May 10, 2013
Category: Sci/Tech
Source: Google
Arctic Warmer 2 to 3.5 Million Years Ago: Region Is Extremely Sensitive to ...
major findings is that the Arctic was very warm in the middle Pliocene and Early Pleistocene-roughly 3.6 to 2.2 million years ago-when others have suggested atmospheric carbon dioxide was not much higher than levels we see today," Julie Brigham-Grette, of the University of Massachusetts Amherst said.
Date: May 10, 2013
Category: Sci/Tech
Source: Google
Ice-Free Arctic May be Nearer Than We Thought: Crater Reveals Warmer World
"There was probably no sea ice, and the whole Arctic was pretty well forested, so it was a very different world," said Julie Brigham-Grette, one of the researchers, in an interview with LiveScience. "So, how did we go from that to the tundra that we have today, and what does this tell us about the f
The researchers found that during this time, the Arctic was very warm, with summer temperatures about 14 degrees Fahrenheit (8 degrees Celsius) warmer than they are in the region today, said Julie Brigham-Grette, a professor in the department of geosciences at the University of Massachusetts