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human activity and the destruction of the planet


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Melting Greenland ice ‘could leave 400 million homeless by the end of the century’

Scientists have warned that coasts could be swamped by regular floods by the end of the century.  This is because the Greenland ice sheets are melting faster than originally predicted.  Calculations suggest that up to 400,000 million people could be left homeless as a result, 40 million more than that predicted by the IPCC.

Greenland has lost 3.8 trillion tonnes of ice since 1990. The figures from this latest research are similar to the IPCC’s worst case scenario.

GreenlandIcemelt

A team of 96 polar scientists from 50 international organisations contributed to the new findings published in Nature.

https://www.nature.com/articles/d41586-018-07617-1

Analysis indicated rise in air and ocean temperatures caused the surface ice to melt and increased glacial flow.

According to the researchers, Greenland stores enough water to raise global sea levels by six metres and knowing how much of this ice is lost is key to understanding the effects and impact of climate change.



Another report from Danish scientists was published last June, which estimated that 2019 could be the year of record high temperatures in the Arctic (2012 having been the previous high.

On June 12 2019, the day before the photograph below was taken, the closest weather station, in Qaanaaq, registered temperatures of 17.3 degrees Celsius (63.1 Fahrenheit), just 0.3 points lower than the previous record set on June 30, 2012.

“There was a dry winter and then warm air, clear skies and sun — all preconditions for an early melting,” Ruth Mottram explained. She is a climatologist at the Danish Meteorological Institute (DMI).

While researching oceanographic moorings and a weather station, Steffen Olsen snapped a picture of his sled dogs pushing through a fjord, the sea ice submerged under several centimetres of meltwater.

Sled dogs wade through standing water on the sea ice during an expedition in northwestern Greenland, whose ice sheet may have completely melted within the next millennium if greenhouse gas emissions continue at their current rate, a study has found (AFP Photo/Steffen Olsen)

Locals who accompanied Olsen’s expedition didn’t expect the sea ice to start melting that early. They usually take that route because the ice is very thick, but they had to turn back because the water was deeper and deeper and they couldn’t advance.

See further details at:

https://news.yahoo.com/arctic-could-face-another-scorching-annus-horribilis-062144315.html;_ylt=AwrXnCJi1wldRlcAEhDQtDMD;_ylu=X3oDMTEyYmQzYmV0BGNvbG8DZ3ExBHBvcwMxBHZ0aWQDQjc2MDlfMQRzZWMDc3I-?guccounter=1



 


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Five new islands discovered as the Arctic ice melts

A Russian naval expedition has discovered five Arctic islands as climate change melts glaciers and reveals landforms previously hidden under ice.

Ranging in size from 900 to 54,500 square metres, the five tiny islands are located in the cove of Vize off the northeastern shore of Novaya Zemlya, which divides the Barents and Kara seas in the Arctic ocean, a defence ministry statement said.

A student Marina Migunova first spotted the islands in 2016 while analysing satellite imagery for her final coursework at a naval university. But new geographic points are added to maps and other navigational documents only after specialists visit them and perform a topographic survey, the defence ministry said.
The islands were previously concealed under the Nansen glacier, also known as the Vylka, which is part of Europe’s largest ice cap covering much of Novaya Zemlya’s northern island.

Arctic islands

The retreat of Arctic ice amid rising air and ocean temperatures has been unveiling unknown landforms. In 2015-18, the hydrographic service observed more than 30 islands, capes and bays near Novaya Zemlya and Franz Josef Land for the first time through satellite monitoring. More are expected to be found.

A US study last year concluded that the ice loss by glaciers on Franz Josef Land had doubled between 2011 and 2015.

Melting ice has increasingly stranded polar bears on land, contributing to incidents like the “polar bear invasion” of a military town on Novaya Zemlya this year.

Coastal erosion is also speeding up as permafrost soil thaws and summertime wave action increases.

President Vladimir Putin said at an Arctic conference in April that Russian data showed the region was warming not two but four times faster than the rest of the world.

In response, his country has been expanding its presence in the Arctic, opening military bases and building nuclear icebreakers to promote shipping along the northern sea route.