Wet-dry cycles in Southeast linked to global warming

An area of subtropical high pressure known as the Bermuda High is growing stronger. As it wobbles to the east and west, it increases the chances of abnormally wet or abnormally dry summers in the Southeast.

Warming intensifies and shifts powerful Bermuda High, a key weather maker in the South Atlantic Basin

By Summit Voice

SUMMIT COUNTY — Climate scientists at Duke University said their recent study of 60 years of weather records show that increasingly frequent episodes of exceptionally dry and wet conditions in the Southeast are probably linked to global warming.

The researchers say those anomalies in the region have doubled as the Bermuda High has intensified. As that high pressure area — also known as the North Atlantic Subtropical High — has grown stronger, its weather-making western edge has moved 1.22 longitudinal degrees closer to the East Coast every decade.

The Bermuda High forms every summer near Bermuda, where its powerful surface center helps steer Atlantic hurricanes and plays a major role in shaping weather in the eastern United States, Western Europe and northwestern Africa. (more…)

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