‘Blocking highs’ becoming more common over Greenland
What happens in Greenland doesn’t stay in Greenland. Climate shifts in the Arctic affect the rest of the northern hemisphere. @bberwyn photo.
Just a few weeks after scientists reported record early melting on parts of the Greenland Ice Sheet, a new study helps explain some of the recent dramatic climate shifts in the high latitudes of the northern hemisphere.
Stationary high pressure systems over Greenland have become more frequent since the 1980s, said University of Sheffield geographer Prof. Edward Hanna, adding that the pattern is also linked with extreme weather over northwest Europe, including unusually wet conditions in the UK in the summers of 2007 and 2012.
The study, published in the International Journal of Climatology, looked at large-scale weather patterns over Greenland going back to 1851 using a measure called the Greenland Blocking Index, which marks the how…
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