By the end of the summer, about 440 billion tons of ice will have melted or calved off Greenland's giant ice sheet, scientists estimate—enough water to flood Pennsylvania or the country of Greece about a foot.
New York University air and ocean scientist David Holland, who is tracking what's happening in Greenland from both above and below, calls it"the end of the planet." He is referring to geography more than the future. Yet in many ways this place is where the planet's warmer and watery future is being written.
In just the five days from July 31 to Aug. 3, more than 58 billion tons melted from the surface. That's over 40 billion tons more than the average for this time of year. And that 58 billion tons doesn't even count the huge calving events or the warm water eating away at the glaciers from below, which may be a huge factor.
This year is coming near but not quite passing the extreme summer of 2012 — Greenland's worst year in modern history for melting, scientists report. Those ice cliffs are somewhere between 225 feet and 328 feet high. Just next to them are Helheim's remnants — sea ice, snow and icebergs — forming a mostly white expanse, with a mishmash of shapes and textures. Frequently water pools amid that white, glimmering a near-fluorescent blue that resembles windshield wiper fluid or Kool-Aid.
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