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10612 |
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Date: December 12, 2017 at 14:19:10
From: Shirley/PA, [DNS_Address]
Subject: Arctic permafrost thawing faster than ever, US climate study finds |
URL: https://www.theguardian.com/environment/2017/dec/12/arctic-permafrost-sea-ice-thaw-climate-change-report |
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This article really only hints at the catastrophe the melting of permafrost is causing world wide.
You know, of course, that there's no stopping it.
Most certainly the tipping point has been reached.
"Tuesday 12 December 2017 14.04 EST
Permafrost in the Arctic is thawing faster than ever, according to a new US government report that also found Arctic seawater is warming and sea ice is melting at the fastest pace in 1,500 years.
The annual report released on Tuesday by the National Oceanic and Atmospheric Administration showed slightly less warming in many measurements than a record hot 2016. But scientists remain concerned because the far northern region is warming twice as fast as the rest of the globe and has reached a level of warming that’s unprecedented in modern times.
“2017 continued to show us we are on this deepening trend where the Arctic is a very different place than it was even a decade ago,” said Jeremy Mathis, head of NOAA’s Arctic research program and co-author of the 93-page report.
Findings were discussed at the American Geophysical Union meeting in New Orleans.
“What happens in the Arctic doesn’t stay in the Arctic; it affects the rest of the planet,” said acting NOAA chief Timothy Gallaudet. “The Arctic has huge influence on the world at large.”....
This isn’t just a concern for the few people who live north of the Arctic circle. Changes in the Arctic can alter fish supply. And more ice-free Arctic summers can lead to countries competing to exploit new areas for resources. Research also shows changes in Arctic sea ice and temperature can alter the jet stream, which is a major factor in US weather.
This is probably partly responsible for the current unusual weather in the United States that brought destructive wildfires to California and a sharp cold snap to the south and east, according to NOAA scientist James Overland and private meteorologist expert Judah Cohen.
“The Arctic has traditionally been the refrigerator to the planet, but the door of the refrigerator has been left open,” Mathis said...."
More at link.
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Responses:
[10614] [10615] |
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10614 |
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Date: December 12, 2017 at 14:41:53
From: Shirley/PA, [DNS_Address]
Subject: The Sleeping Giant in Arctic Permafrost - Arctic Methane Emissions - P |
URL: https://www.youtube.com/watch?v=6GXlxT7Vl_g |
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Stop the video at 1:55.
Think about that graph.
If we shut everything off right now it would not stop the release of methane that is already accelerating.
BTW nothing will stop that permafrost release until the Big Cold comes again.
It's about cycles most notably the Milankovitch Cycles.
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Responses:
[10615] |
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10615 |
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Date: December 12, 2017 at 14:46:10
From: Shirley/PA, [DNS_Address]
Subject: Milankovitch Cycles |
URL: http://climate.ncsu.edu/edu/k12/.Milankovitch |
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Partial quote:"These cycles are caused by changes in the earth’s orbit around the sun, like its shape or eccentricity, its precession or wobble, and the tilt of its axis or obliquity. Each of these have a different effect on how much of the sun’s energy reaches the earth and when the strongest sunlight occurs.
Why do I care? The orbit has an effect on climate by determining the amount of incoming sunlight. The cycle of ice ages are linked to changes in the earth’s orbit, so they are important to the long-term climate variability of the earth...."
More at link.
Scroll to the bottom for interesting "Causes of Climate Change" link.
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