The Arctic's 'last bastion' of sea ice is breaking up for the first time on record

Oct 2010
67,982
27,834
Colorado
#1
Hold on folks. The pace of climatic change appears to be accelerating.

The Arctic's 'last bastion' of sea ice
is breaking up for the first time on record


The sea ice off the coast of northern Greenland is normally some of the thickest in the entire Arctic, with ridges of ice piled as high as 70 feet in some places.

And despite the rapid retreat of sea ice across the region due to climate change, this harsh corner of the globe was expected to be the last to retain year-round sea ice cover.

But recent satellite imagery shows that some of the Arctic's oldest ice has been replaced by miles of open water for the first time on record, surprising scientists and ice monitors.

"This was the area that was seen as the last bastion, where we'd see these changes come last, but they've arrived," said Walt Meier, a senior research scientist with the National Snow and Ice Data Center.

...In general, the loss of sea ice does have implications for the global climate.

As sea ice melts, sunlight entering the atmosphere that would normally be reflected back into space is instead absorbed by the dark blue of the open ocean, further heating the water and the surrounding air. This kick-starts a vicious cycle, resulting in even more melting of sea ice and ocean heat absorption.

"Long-term, it's clear that the ice is more broken up and thinner and weaker, so this is probably going to happen again at least from time to time. How often? It's hard to say," Meier said. "This will still probably be the last area to lose ice completely during the summer, but it's more vulnerable than we had previously thought."

More here: https://www.cnn.com/2018/08/23/world/arctic-sea-ice-breakup-greenland-trnd-wxc/index.html
 
Jun 2013
28,864
15,452
Ohio
#2
A sad story. I keep reading in various stories that new developments were not expected this soon by scientists. My gut feeling has been that a compounding effect will bring massive changes sooner than scientists project.
 
Nov 2012
41,006
11,805
Lebanon, TN
#3
@imaginethat


so you are saying the first time in ~190 years, that is how long they have been keeping records

It is the 5th time in 400,000 years. This is an event that occurs ~every 110,000 years. Last time this Occurred was 110,000 years ago, the time before that was ~220,000 years ago, and before that was 330,000 years ago.

This is a cycle that is due.
 
Oct 2010
67,982
27,834
Colorado
#4
@imaginethat


so you are saying the first time in ~190 years, that is how long they have been keeping records

It is the 5th time in 400,000 years. This is an event that occurs ~every 110,000 years. Last time this Occurred was 110,000 years ago, the time before that was ~220,000 years ago, and before that was 330,000 years ago.

This is a cycle that is due.
This "cycle" has been initiated by human activity.

This "cycle" will result in cascading catastrophe, maybe becoming a substantial factor in that "end of the world" thing.
 
Nov 2012
41,006
11,805
Lebanon, TN
#5
This "cycle" has been initiated by human activity.

This "cycle" will result in cascading catastrophe, maybe becoming a substantial factor in that "end of the world" thing.

This warming period began 10,000 years ago.. I don't Think Ug the Cro-Magnon driving is SU-Mastodon had anything to do with it.

Remember Bolder CO was under the Ice Caps at that time. So was Louisville KY, and Lema Peru and Sydney Australia and Paris France



 
Apr 2013
38,294
26,280
La La Land North
#7
And to add to the cascade effect, studies are showing that the forest fires in northern Canada and Europe/Russia and the resulting black coloration resulting is accelerating the rate of permafrost loss, which of course accelerates the rate of clathrate dissipation to methane and water, with the methane entering the atmosphere.

A tipping point is a real thing.
 
Likes: Camelot
Nov 2012
41,006
11,805
Lebanon, TN
#9
Also this is the COOLEST of the 5 warming periods, 4 previous warming periods were warmer than this period. To find a cooler warming period you have to look at the warming period ~700,000 years ago
 
Nov 2012
41,006
11,805
Lebanon, TN
#10
And to add to the cascade effect, studies are showing that the forest fires in northern Canada and Europe/Russia and the resulting black coloration resulting is accelerating the rate of permafrost loss, which of course accelerates the rate of clathrate dissipation to methane and water, with the methane entering the atmosphere.

A tipping point is a real thing.
Forest fires are due to man you are correct, NOT WARMING Humans stop natural burns which keep the dead under brush from reaching critical levels.

The lack of natural burns has caused dead brush, leaves, and other under growth to become a very large fuel source for fires.
 
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