Greenland Temperatures Hottest In 1,000 Years, Scientists Report

An anonymous reader quotes a report from CNN: As humans fiddle with the planet's thermostat, scientists are piecing together Greenland's history by drilling ice cores to analyze how the climate crisis has impacted the island country over the years. The further down they drilled, the further they went back in time, allowing them to separate which temperature fluctuations were natural and which were human-caused. After years of research on the Greenland ice sheet -- which CNN visited when the cores were drilled -- scientists reported Wednesday in the journal Nature that temperatures there have been the warmest in at least the last 1,000 years -- the longest amount of time their ice cores could be analyzed to. And they found that between 2001 and 2011, it was on average 1.5 degrees Celsius warmer than it was during the 20th century. The report's authors said human-caused climate change played a significant role in the dramatic rise in temperatures in the critical Arctic region, where melting ice has a considerable global impact. "Greenland is the largest contributor currently to sea level rise," Maria Horhold, lead author of the study and a glaciologist with the Alfred Wegener Institute, told CNN. "And if we keep on going with the carbon emissions as we do right now, then by 2100, Greenland will have contributed up to 50 centimeters to sea level rise and this will affect millions of people who live in coastal areas." Weather stations along the edge of the Greenland ice sheet have detected that its coastal regions are warming, but scientists' understanding of the effects of rising temperatures there had been limited due to the lack of long-term observations.

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