Climate Change

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#476

Post by Volkonski » Mon May 13, 2019 10:53 am

It's Official: Atmospheric CO2 Just Exceeded 415 ppm For The First Time in Human History

https://www.sciencealert.com/it-s-offic ... an-history
"This is the first time in human history our planet's atmosphere has had more than 415 ppm CO2," meteorologist Eric Holthaus tweeted.

"Not just in recorded history, not just since the invention of agriculture 10,000 years ago. Since before modern humans existed millions of years ago. We don't know a planet like this."

It was only a few years ago that carbon pollution in the atmosphere soared past 400 ppm, and it didn't take long much longer to reach 410 ppm (in 2017).

In fact, with this record-breaking surge in atmospheric carbon poisoning the skies and trapping Earth's heat, scientists knew hitting 415 ppm in 2019 was all but inevitable.
Image


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
DejaMoo
Posts: 5064
Joined: Tue Jan 25, 2011 1:19 pm
Occupation: Agent of ZOG

Re: Climate Change

#477

Post by DejaMoo » Thu May 16, 2019 1:59 pm

New outlook on global warming: Best prepare for social collapse, and soon
:snippity:
I’d like to introduce you to Jem Bendell and his notion of Deep Adaptation.

“Like” isn’t the right verb there, with its sense of preference and maybe even pleasure; maybe that was reflex. Reading and writing about Deep Adaptation has been painful from the start, and I would really rather be talking about anything else today. But I feel a certain responsibility toward Bendell’s new research paper, which concludes that recent trends in key climate factors indicate we are headed for “near-term social collapse due to climate chaos.”

By the near term, he means less than 10 years from now. By social collapse, he is speaking of unpredictable and interrelated breakdowns, in affluent as well as poor countries. And that’s just the beginning: Over the following decades, Bendell sees climate disruption working longer-term injuries to governments, economies, social institutions, agriculture, industries — to civilization, you could say — on a continuum running from “inevitable collapse” to “probable catastrophe” to “possible extinction.”

How do we “adapt” to that? By accepting that the world as we’ve known it is ending, he says, then beginning to envision whatever new one can be built on the ruins. (Also, by abandoning any misplaced notion that we can still avert disaster.)


I've heard this bull before.

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#478

Post by Volkonski » Thu May 16, 2019 2:16 pm

That's deeply worrying.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#479

Post by Volkonski » Sat May 18, 2019 3:56 pm

‘This is a wake-up call’: the villagers who could be Britain’s first climate refugees

https://www.theguardian.com/environment ... e-refugees
In 26 years – or sooner, if forecasts worsen or a storm breaches the sea defences – a taskforce led by Gwynedd council will begin to move the 850 residents of Fairbourne out of their homes. The whole village – houses, shops, roads, sewers, gas pipes and electricity pylons – will then be dismantled, turning the site back into a tidal salt marsh.

It will become the first community in the UK to be decommissioned as a result of climate change; while other villages along England’s crumbling east coast have lost houses to accelerating erosion, none have been abandoned. It may also create hundreds of British climate refugees: the residents of Fairbourne are not expected to receive any compensation for the loss of their homes, and resettlement plans are unclear.

It will not be the last village to meet this fate. Sea levels around the UK have risen by 15.4cm since 1900, and the Met Office expects them to rise by as much as 1.12m from modern levels by 2100, putting at risk communities in coastal floodplains and on sea cliffs, which are found around much of the east and south coast of England. The west of Wales and north-west England are also vulnerable. Even if the world’s governments succeed in reversing increasing emissions in line with their Paris climate commitments, sea levels are set to rise for centuries, as the impact of higher global temperature and warmer oceans takes effect.

Fairbourne rises, somewhat improbably, from reedy mudflats that slide into the Irish Sea. A straggle of white bungalows, holiday cottages and Victorian apartments, the village spreads out between the brackish waters of the Mawddach estuary mouth and the pale uplands of the Snowdonia national park. On a bright day, with birdsong carrying on the warm breeze, it is easy to understand why the Victorian flour merchant Arthur McDougall chose this spot to build his ideal seaside resort in the late 1890s.
Image

If the sea wall fails the village would already be flooded during high tides.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Lani
Posts: 4903
Joined: Fri Nov 16, 2012 4:01 pm
Location: Some island in the Pacific

Re: Climate Change

#480

Post by Lani » Mon May 27, 2019 7:53 pm

Trump Administration Hardens Its Attack on Climate Science
Now, after two years spent unraveling the policies of his predecessors, Mr. Trump and his political appointees are launching a new assault.

In the next few months, the White House will complete the rollback of the most significant federal effort to curb greenhouse-gas emissions, initiated during the Obama administration. It will expand its efforts to impose Mr. Trump’s hard-line views on other nations, building on his retreat from the Paris accord and his recent refusal to sign a communiqué to protect the rapidly melting Arctic region unless it was stripped of any references to climate change.

And, in what could be Mr. Trump’s most consequential action yet, his administration will seek to undermine the very science on which climate change policy rests.
:snippity:
“The demonization of carbon dioxide is just like the demonization of the poor Jews under Hitler,” said the physicist, William Happer, who serves on the National Security Council as the president’s deputy assistant for emerging technologies.
:snippity:
The entire article is nausea and anxiety provoking. :sick:
https://www.nytimes.com/2019/05/27/us/p ... ience.html


Insert signature here: ____________________________________________________

User avatar
ZekeB
Posts: 16166
Joined: Mon Oct 12, 2009 10:07 pm
Location: Northwest part of Semi Blue State

Re: Climate Change

#481

Post by ZekeB » Mon May 27, 2019 8:22 pm

My daughter thinks I'm being cruel. I told her the flooding last month in Eastern Nebraska was because jeebus is punishing those climate deniers for voting for Trump.


Trump: Er hat eine größere Ente als ich.

Putin: Du bist kleiner als ich.

User avatar
AndyinPA
Posts: 3262
Joined: Wed Apr 05, 2017 1:00 pm
Location: Pittsburgh PA

Re: Climate Change

#482

Post by AndyinPA » Mon May 27, 2019 9:13 pm

ZekeB wrote:
Mon May 27, 2019 8:22 pm
My daughter thinks I'm being cruel. I told her the flooding last month in Eastern Nebraska was because jeebus is punishing those climate deniers for voting for Trump.
I have often wondered why these Christians always see themselves as being tested by God when they could just as easily be being punished by God.



User avatar
RTH10260
Posts: 22631
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Climate Change

#483

Post by RTH10260 » Tue May 28, 2019 1:07 am

AndyinPA wrote:
Mon May 27, 2019 9:13 pm
ZekeB wrote:
Mon May 27, 2019 8:22 pm
My daughter thinks I'm being cruel. I told her the flooding last month in Eastern Nebraska was because jeebus is punishing those climate deniers for voting for Trump.
I have often wondered why these Christians always see themselves as being tested by God when they could just as easily be being punished by God.
and the Devil always gets his way... :doh:



User avatar
DejaMoo
Posts: 5064
Joined: Tue Jan 25, 2011 1:19 pm
Occupation: Agent of ZOG

Re: Climate Change

#484

Post by DejaMoo » Tue Jun 04, 2019 1:20 pm

And another report predicting the imminent collapse of civilization:

New Report Suggests ‘High Likelihood of Human Civilization Coming to an End’ Starting in 2050
A harrowing scenario analysis of how human civilization might collapse in coming decades due to climate change has been endorsed by a former Australian defense chief and senior royal navy commander.

The new policy briefing is written by David Spratt, Breakthrough’s research director and Ian Dunlop, a former senior executive of Royal Dutch Shell who previously chaired the Australian Coal Association.

In the briefing’s foreword, retired Admiral Chris Barrie—Chief of the Australian Defence Force from 1998 to 2002 and former Deputy Chief of the Australian Navy—commends the paper for laying “bare the unvarnished truth about the desperate situation humans, and our planet, are in, painting a disturbing picture of the real possibility that human life on Earth may be on the way to extinction, in the most horrible way.”
The paper is here:
https://www.breakthroughonline.org.au/papers


I've heard this bull before.

User avatar
Lani
Posts: 4903
Joined: Fri Nov 16, 2012 4:01 pm
Location: Some island in the Pacific

Re: Climate Change

#485

Post by Lani » Wed Jun 05, 2019 5:18 am

Here's a link to see what your coastal neighborhood will look like:
https://coast.noaa.gov/digitalcoast/tools/slr.html

I don't get this mindset that they grab all the bucks they can now while destroying the future for their children and grandchildren.


Insert signature here: ____________________________________________________

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#486

Post by Volkonski » Sat Jun 08, 2019 12:25 pm

The end of the Arctic as we know it

https://www.theguardian.com/environment ... we-know-it
The melt is not simply a seasonal process. The natural thaw that starts with spring’s warm weather is being amplified by manmade global heating. The Arctic has heated up by 2C above pre-industrial levels, twice the global average. Some hotspots, including parts of the Fram strait, have warmed by 4C. There are variations from year to year, but the trend is clear and accelerating. Sea ice is melting earlier in the spring and freezing later in the autumn. Each summer it thins more and recedes further, leaving greater expanses of the ocean exposed to 24-hour sunlight. This is driving back the frontiers of ice and fragmenting one of the planet’s most important climate regulators. It is also creating a series of feedbacks that are accelerating the Arctic melt. Several are only partially understood.

:snippity:

Since the start of the satellite era in 1979, the summer Arctic has lost 40% of its extent and up to 70% of its volume, says Wagner. Other scientists calculate the rate of decline at 10,000 tonnes a second. Much of the multiyear ice is now gone. Most of what is left is the younger, thinner layer from the previous winter, which is easier for the sun to melt and the wind to push around. Wagner expects ice-free summers in 20 to 40 years, which would allow ships to cruise all the way to the north pole.

:snippity:

But this is changing. When Cape observes the zooplankton through a microscope in the hold of the ship, he can see that the chubby Arctic copepods have competition from their slimmer and shorter Atlantic counterparts. This invasion has been recorded in other parts of the ocean. “We see a shift from big to small, which is a concern, because it will make this pump action weaker,” he says. The study may help to explain why the Arctic is losing oxygen faster than almost anywhere on Earth. Another factor is that cold water absorbs more carbon dioxide, which gives it high levels of acidity. “We talk about the ocean being hot, sour and out of breath,” Cape says.

If the Arctic were a patient, doctors would be alarmed by its vital signs. As well as hot flushes, asthma and contamination (the researchers are following up on studies that suggest the Fram strait has one of the highest levels of microplastics in the world), the ocean has also been diagnosed with a weakening of its immune system. For centuries, the Arctic’s distinctive character has been shaped by a layer of cold, relatively fresh water just below the surface, produced by melting ice and glaciers. This has insulated the sea ice from the warmer, denser, saltier waters of the Atlantic currents that flow in the depth. But this stratification is collapsing as temperatures rise.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

PaulG
Posts: 586
Joined: Thu Jan 21, 2010 7:06 pm

Re: Climate Change

#487

Post by PaulG » Sat Jun 08, 2019 1:37 pm

Useful interactive chart of arctic sea ice. I have this bookmarked and check it from time to time. I prefer a graph to simple numbers. It makes it easier to get whole picture and see GW deniers are full of crap.



User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#488

Post by Volkonski » Sun Jun 16, 2019 11:56 am

'The Changes Are Really Accelerating': Alaska at Record Warm While Greenland Sees Major Ice Melt

https://www.commondreams.org/news/2019/ ... -major-ice
In Alaska, the crisis led this year to the warmest spring on record for the state; one city, Akiak, may turn into an island due to swelling riverbanks and erosion exacerbated by thawing permafrost and ice melt. Massachusetts-based Woods Hole Research Center scientist Susan Natali told The Guardian that what's happening in Akiak is just an indicator of the danger posed to Alaska by the climate crisis.

:snippity: "The changes are really accelerating in Alaska," said Natali.

Thawing will result in people losing their homes—in cities like Akiak, it already has—and, Natali warned, eventually the scope of the problem will be beyond the capabilities of the U.S. government to handle.

:snippity:

Meanwhile, in Greenland, 45 percent of the island's massive ice sheet is melting—much higher than the 10 percent that is normally melting at this point in the year. While much of the melt is expected to refreeze once temperatures stabilize, the integrity of the ice after the early melt makes it more likely to accelerate later in the year.

That means the unprecedented June melt will likely combine with the ice–albedo feedback for record melting, Xavier Fettweis, a Greenland researcher at Belgium's University of Liege, told science hub Earther.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#489

Post by Volkonski » Sun Jun 16, 2019 11:59 am

Looks like there will be record Arctic ice melting this summer. :(



Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#490

Post by Volkonski » Sun Jun 16, 2019 12:03 pm

Greenland Was 40 Degrees Hotter Than Normal This Week, And Things Are Getting Intense

https://www.sciencealert.com/greenland- ... ng-intense
Greenland saw temperatures soar up to 40 degrees Fahrenheit above normal Wednesday, while open water exists in places north of Alaska where it seldom, if ever, has in recent times.

It's "another series of extreme events consistent with the long-term trend of a warming, changing Arctic," said Zachary Labe, a climate researcher at the University of California at Irvine.

And the abnormal warmth and melting of ice in the Arctic may be messing with our weather.

:snippity:

A big dome of high pressure has positioned itself over Greenland, resulting in sunny skies and mild temperatures, which have enabled melting. An automated weather station at the top of Greenland's ice sheet topped freezing on June 12, a very rare event, which last occurred in July 2012.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#491

Post by Volkonski » Tue Jun 18, 2019 12:54 pm

Not good. :?

The Poisons Release By Melting Arctic Ice

http://www.bbc.com/future/story/2019061 ... future_rss
What Natali describes is the visible, dramatic effects of a rapidly warming Arctic. The permafrost – up until now, permanently frozen land and soil – is thawing out, and revealing its hidden secrets. Alongside Pleistocene fossils are massive carbon and methane emissions, toxic mercury, and ancient diseases.

The organic-rich permafrost holds an estimated 1,500 billion tonnes of carbon. “That’s about twice as much carbon in the atmosphere, and three times as much carbon than that stored in all the world’s forests”, says Natali. She explains that between 30% and 70% of the permafrost may melt before 2100, depending on how effectively we respond to climate change. “The 70% is business as usual, if we continue to burn fossil fuels at our current rate, and 30% is if we vastly reduce our fossil fuel emissions… Of the 30-70% that thaws, the carbon locked up in organic matter will begin to be broken down by microbes, they use it as fuel or energy, and they release it as CO2 or methane.”

:snippity:

But methane and CO2 are not the only things being released from the once frozen ground. In the summer of 2016, a group of nomadic reindeer herders began falling sick from a mysterious illness. Rumours began circling of the “Siberian plague”, last seen in the region in 1941. When a young boy and 2,500 reindeer died, the disease was identified: anthrax. Its origin was a defrosting reindeer carcass, a victim of an anthrax outbreak 75 years previously. The 2018 Arctic report card speculates that, “diseases like the Spanish flu, smallpox or the plague that have been wiped out might be frozen in the permafrost.” A French study in 2014 took a 30,000 year-old virus frozen within permafrost, and warmed it back up in the lab. It promptly came back to life, 300 centuries later.

:snippity:

Long-preserved human archaeology may also be emerging, but just as quickly lost. A frozen Palaeo-Eskimo site in Greenland, preserved for some 4,000 years, is at risk of being washed away. This is just one of an estimated 180,000 archaeological sites preserved in the permafrost, often with soft tissues and clothing that uniquely remain intact but would rot quickly if exposed. Adam Markham, of the Union of Concerned Scientists has said, “with rapid, human-caused climate change, many sites or the artefacts they contain, will be lost before they have been discovered.”


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#492

Post by Volkonski » Tue Jun 18, 2019 3:55 pm

Scientists amazed as Canadian permafrost thaws 70 years early

https://www.reuters.com/article/us-clim ... SKCN1TJ1XN
A team from the University of Alaska Fairbanks said they were astounded by how quickly a succession of unusually hot summers had destabilized the upper layers of giant subterranean ice blocks that had been frozen solid for millennia.

“What we saw was amazing,” Vladimir E. Romanovsky, a professor of geophysics at the university, told Reuters by telephone. “It’s an indication that the climate is now warmer than at any time in the last 5,000 or more years.”

With governments meeting in Bonn this week to try to ratchet up ambitions in United Nations climate negotiations, the team’s findings, published on June 10 in Geophysical Research Letters, offered a further sign of a growing climate emergency.

The paper was based on data Romanovsky and his colleagues had been analyzing since their last expedition to the area in 2016. The team used a modified propeller plane to visit exceptionally remote sites, including an abandoned Cold War-era radar base more than 300 km from the nearest human settlement.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#493

Post by Volkonski » Thu Jun 20, 2019 8:10 am

Rising Temperatures Ravage the Himalayas, Rapidly Shrinking Its Glaciers

https://www.nytimes.com/2019/06/19/clim ... ciers.html
The study, published Wednesday in the journal Science Advances, concluded that the glaciers have lost a foot and a half of ice every year since 2000, melting at a far faster pace than in the previous 25-year period. In recent years, the glaciers have lost about eight billion tons of water a year. The study’s authors described it as equivalent to the amount of water held by 3.2 million Olympic-size swimming pools.

The study adds to a growing and grim body of work that points to the dangers of global warming for the Himalayas, which are considered the water towers of Asia and an insurance policy against drought.

In February, a report produced by the International Center for Integrated Mountain Development warned that the Himalayas could lose up to a third of their ice by the end of the century, even if the world can fulfill its most ambitious goal of keeping global average temperatures from rising only 1.5 degrees above preindustrial levels.

:snippity:

The retreat of glaciers is one of the most glaring consequences of rising global temperatures. Around the world, vanishing glaciers will mean less water for people, livestock and crops.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
RTH10260
Posts: 22631
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Climate Change

#494

Post by RTH10260 » Thu Jun 20, 2019 9:00 am

Greenland - dogs running on water

Image

Teams Walking on Melted Water Goes Viral

byJon Queally, staff writer

A team from the Danish Meteorological Institute travels across the melted sea ice to retrieve equipment.

"This is not a problem for future generations. This isn't a problem twenty years in the future. Climate breakdown is happening NOW." (Photo: Steffen M Olsen/Twitter)

In yet the latest shocking image depicting just how fast the world's natural systems are changing due to the global climate emergency, a photograph showing a vast expanse of melted Arctic ice in Greenland—one in which a pair of sled dog teams appear to be walking on water—has gone viral.

The photo, taken by researcher Steffen Olsen from the Centre for Ocean and Ice at the Danish Meteorological Institute just last week, showed two teams of dogs pulling sleds designed for ice and snow through ankle-deep water atop a melted ice sheet in the country's Inglefield Bredning fjord.



https://www.commondreams.org/news/2019/ ... water-goes#



User avatar
neonzx
Posts: 6574
Joined: Tue Mar 10, 2009 9:27 am

Re: Climate Change

#495

Post by neonzx » Tue Jul 02, 2019 3:55 pm

► Show Spoiler
Zack Labe @ZLabe
Wow, June 2019 was the hottest on record and greater than 2°C above the 1981-2010 climate average in Europe. The average global temperature was also the highest on record.

More info (@CopernicusECMWF):

https://climate.copernicus.eu/record-br ... tures-june



Jean-Noël Thépaut, Head of C3S, comments: “Although local temperatures may have been lower or higher than those forecast, our data show that the temperatures over the southwestern region of Europe during the last week of June were unusually high. Although this was exceptional, we are likely to see more of these events in the future due to climate change."


To which Trump replied, Fuck the law. I don't give a fuck about the law. I want my fucking money.

User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#496

Post by Volkonski » Fri Jul 05, 2019 12:14 pm

Brian Brettschneider

@Climatologist49
Follow Follow @Climatologist49
More
Merrill Field has hit 90°F. This is the warmest temperature ever measured in the Anchorage Bowl. From 1943 to 1952, this was the official climate site for Anchorage. The current Official site, Anchorage Intl. AP. has been as warm as 85°F - tying their all-time record. @AlaskaWx


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
neonzx
Posts: 6574
Joined: Tue Mar 10, 2009 9:27 am

Re: Climate Change

#497

Post by neonzx » Mon Jul 08, 2019 9:49 am



To which Trump replied, Fuck the law. I don't give a fuck about the law. I want my fucking money.

User avatar
RTH10260
Posts: 22631
Joined: Tue Mar 02, 2010 8:52 am
Location: Near the Swiss Alps

Re: Climate Change

#498

Post by RTH10260 » Mon Jul 08, 2019 10:32 am

neonzx wrote:
Mon Jul 08, 2019 9:49 am
https:// twitter.com/HopeSeck/status/1148215281833132032
Hope Hodge Seck @HopeSeck
We used to have a creek and a yard. Now just a creek I guess.

15:00 - 8 Jul 2019
That's some serious water. I wonder if they will still have a bridge by the end of the day. :(



User avatar
Volkonski
Posts: 23927
Joined: Sat Mar 02, 2013 4:44 pm
Location: Texas Gulf Coast and North Fork of Long Island
Occupation: Retired Mechanical Engineer

Re: Climate Change

#499

Post by Volkonski » Tue Jul 09, 2019 2:21 pm

Instability in Antarctic ice projected to make sea level rise rapidly

https://phys.org/news/2019-07-instabili ... pidly.html
In the last six years, five closely observed Antarctic glaciers have doubled their rate of ice loss, according to the National Science Foundation. At least one, Thwaites Glacier, modeled for the new study, may be in danger of succumbing to this instability, a volatile process that pushes ice into the ocean fast.

How much ice the glacier will shed in coming 50 to 800 years can't exactly be projected due to unpredictable fluctuations in climate and the need for more data. But researchers at the Georgia Institute of Technology, NASA Jet Propulsion Laboratory, and the University of Washington have factored the instability into 500 ice flow simulations for Thwaites with refined calculations.

The scenarios diverged strongly from each other but together pointed to the eventual triggering of the instability, which will be described in the question and answer section below. Even if global warming were to later stop, the instability would keep pushing ice out to sea at an enormously accelerated rate over the coming centuries.

And this is if ice melt due to warming oceans does not get worse than it is today. The study went with present-day ice melt rates because the researchers were interested in the instability factor in itself.


Image“If everyone fought for their own convictions there would be no war.”
― Leo Tolstoy, War and Peace

User avatar
Whatever4
Posts: 12302
Joined: Tue Sep 08, 2009 6:36 am
Location: Mainely in the plain
Occupation: Visiting doctors.

Re: Climate Change

#500

Post by Whatever4 » Tue Jul 09, 2019 10:32 pm



"[Moderate] doesn't mean you don't have views. It just means your views aren't predictable ideologically one way or the other, and you're trying to follow the facts where they lead and reach your own conclusions."
-- Sen. King (I-ME)

Post Reply

Return to “Science & Technology”