For the first time in recorded history, torrential downpours of rain have struck Greenland’s icy summit nearly two miles above sea level.
Greenland, an environmentally sensitive island, is typically known for its majestic ice sheet and snowy climate, but this is fast changing due to a massive melt taking place this summer.
However, the typical snowfall has been replaced in recent years not simply by a few showers, but by heavy rainfall. The torrential downpour last week was so huge, in fact, that it washed away a terrifying amount of ice across some 337,000 square miles of the ice shelf’s surface, reports Earther.
Temperatures at the ice shelf had simultaneously warmed to a significant degree, with the summit reaching 33 degrees Fahrenheit – within a degree above freezing and the third time that the shelf has surpassed freezing temperatures this decade.
The fact that rain is falling on ice rather than snow is also significant because it is melting ice across much of southern Greenland, which already saw huge melting events last month, while hastening rising sea levels that threaten to submerge whole coastal cities and communities.
To make matters worse, any new ice formed by the freezing rainwater will not last long. The ice shelf currently existing on Greenland was formed by the compression of snow over innumerable years, which shines bright white and reflects sunlight away rather than absorbing it, as ice from frozen rain does.
The huge scale of the melt and accompanying rainfall illustrate the growing peril of rapidly warming climate conditions across the globe.
“This event by itself does not have a huge impact, but it’s indicative of the increasing extent, duration, and intensity of melting on Greenland,” wrote Ted Scambos, a senior research scientist at the National Snow and Ice Data Center at the University of Colorado. “Like the heat wave in the [U.S. Pacific] northwest, it’s something that’s hard to imagine without the influence of global climate change.”
“Greenland, like the rest of the world, is changing,” Scambos told the Washington Post. “We now see three melting events in a decade in Greenland — and before 1990, that happened about once every 150 years. And now rainfall: in an area where rain never fell.”
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