Antinuclear

Australian news, and some related international items

Greenland ice cap melt measured by satellites — and it’s enough to cover Tasmania in almost 5m of water

Greenland ice cap melt measured by satellites — and it’s enough to cover Tasmania in almost 5m of water ABC Weather By Ben Deacon, 30 Oct 19, In late July, polar scientist Martin Stendel was sweltering at his desk in Copenhagen as Europe suffered its worst ever heatwave.

Key points:

  • Greenland’s ice cap is melting, and that water is draining into the ocean, contributing to sea level rise
  • In July this year, it’s estimated more than 30 billion tonnes of ice melted in three days
  • Australian scientists have been able to use NASA satellites to accurately weigh how much ice is melting

As temperatures climbed to more than 15 degrees Celsius above average, the meteorologist realised the record heat was about to hit the arctic.

“I looked at the forecast, and one could see that this heatwave, or this anomalous temperature, was on its way to Greenland,” Dr Stendel said.

Greenland holds the second-largest reserves of fresh water on the planet, after Antarctica.

But year in, year out, the Greenland ice cap has been melting, and that water is draining into the ocean, contributing to sea level rise.Second greatest ice melt event

PHOTO: Danish climate scientist Martin Stendel’s team estimated over 30 billion tonnes of ice melted in a three-day event over summer. (Supplied: Martin Stendel)

Over the next week, Martin Stendel looked on as Greenland suffered the second greatest melt event in recorded history.

“Gigatonnes and gigatonnes melted. And actually, this contributed in a measurable way to sea level rise,” Dr Stendel said.

Martin Stendel’s team at the Danish Meteorological Institute estimated that more than 30 billion tonnes of ice melted in just three days.

Even more troubling, the highest point in Greenland — above 3,000m in altitude — reached temperatures above zero.

“This has happened only seven times, seven times over the past 2,000 years,” Dr Stendel said…….https://www.abc.net.au/news/2019-10-30/melting-greenland-glaciers-weighed-by-australian-scientists/11630970

October 31, 2019 - Posted by | General News

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