10 Billion Tons of Meltwater Poured Off Greenland in a Day — But are Things as Bad as the Twittersphere Says?

ImaGeo iconImaGeo
By Tom Yulsman
Aug 2, 2019 2:45 AMMay 11, 2020 2:51 PM
Greenland Melt Gif - NASA/Yulsman
Comparison of satellite images of the western edge of the Greenland Ice Sheet about 250 miles across, one acquired in 2018 on July 30, and the other on July 31 of this year. Vastly expanded areas of blue in this year’s image are indicative of water at the surface. The gray area, known as the “ablation zone,” is where ice is exposed and experiencing melting. (Images: NASA Worldview. Animation: Tom Yulsman)

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As forecast, the dome of heat that brutalized Western Europe has moved over Greenland, where it has triggered a massive spike in surface melting of snow and ice.

In coming days, the abnormal heat could also cause the Arctic’s floating lid of sea ice — which is already trending at record low levels for this time of year — to shrivel even further.

But if you pay attention to Twitter, it almost seems as if we’ve entered the Arctic Apocalypse. So with this story, I decided to take a deep breath and report as dispassionately as I could on what’s happening.

I started by getting in touch with Mark Serreze, Director of the National Snow and Ice Data Center — which among other things, publishes daily updates on surface melting of the Greenland Ice Sheet and the extent of Arctic sea ice. I asked him for his overall take on what’s happening. Here’s what he told me:

“There have always been what one could call ‘heat waves’ in the Arctic,” he said. That’s just part of the natural variability of weather.

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