Rain fell for several hours at the highest point on the Greenland ice sheet last week — the first rainfall event in recorded history at a location that rarely creeps above freezing temperatures.
last week — the first rainfall event in recorded history at a location that rarely creeps above freezing temperatures.
"Warm conditions and the late-season timing of the three-day melt event coupled with the rainfall led to both high melting and high runoff volumes to the ocean," National Snow and Ice Data Center researchers said in a statement.The rain and warmer-than-usual temperatures were caused by a region of low air pressure that settled over Baffin Island and a ridge of high pressure over southeast Greenland that pushed warm air and moisture up from the south.
Greenland's sprawling 656,000-square-mile ice sheet expands and contracts as part of natural yearly variations, but global warming is. Some climate models suggest that without aggressive climate interventions, the Arctic Ocean could be ice-free in the summers by 2050.
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