Antarctica's effect on sea level rise in coming centuries

Antarctica's effect on sea level rise in coming centuries
Thwaites Glacier. Credit: NASA/James Yungel

There are two primary causes of global mean sea level rise - added water from melting ice sheets and glaciers, and the expansion of sea water as it warms. The melting of Antarctica's ice sheet is currently responsible for 20-25% of global sea level rise.

But how much of a role will it play hundreds of years in the future?

Scientists rely on precise numerical models to answer questions like this one. As the models used in predicting long-term sea level rise improve, so too do the projections derived from them. Scientists at NASA's Jet Propulsion Laboratory in Pasadena, California, have discovered a way to make current models more accurate. In doing so, they have also gotten one step closer to understanding what Antarctica's ice sheet - and the sea level rise that occurs as it melts - will look like centuries from now.

"Unlike most current models, we included solid Earth processes - such as the elastic rebound of the bedrock under the ice, and the impact of changes in sea level very close to the ice sheet," said JPL's Eric Larour, first author of the study. "We also examined these models at a much higher resolution than is typically used - we zoomed in on areas of bedrock that were about 1 kilometer instead of the usual 20 kilometers."

The scientists found that projections for the next 100 years are within 1% of previous projections for that time period; however, further into the future, they observed some significant differences.

3D view of Thwaites Glacier’s grounding line migration over 500 years, for old models (green) where the bedrock is rigid, and our new model (red) where the bedrock is elastic. Note that the ice shelf (floating part of the glacier) has been masked to show the underlying bedrock. Credit: Eric Larour @JPL/NASA/CalTech

"We found that around the year 2250, some of these solid Earth processes started to offset the melting of the ice sheet and the consequent sea level rise," Larour said. In other words, they actually slowed the melting down.

The team noted that a hundred years even further into the future - by 2350 - this slowdown means that the melting of the ice sheet is likely to contribute 29% less to global sea level rise than previous models indicated.

Contribution of Thwaites Glacier, Antarctica, to sea-level rise in the South hemisphere. Credit: Eric Larour @JPL/NASA/CalTech

"One of the main things we learned was that as grounded ice retreats inland, the bedrock under it lifts up elastically," said Erik Ivins, a co-author of the study. "It's similar to how a sofa cushion decompresses when you remove your weight from it. This process slows down the retreat of the ice and ultimately the amount of melting."

2D view of Thwaites Glacier’s grounding line migration over 500 years, for old models (green) where the bedrock is rigid, and our new model (red) where the bedrock is elastic. Credit: Eric Larour @JPL/NASA/CalTech

Although this sounds like good news, the scientists say it's important to keep it in perspective. "It's like a truck traveling downhill that encounters speed bumps in the road," said Larour. "The truck will slow down a bit but will ultimately continue down the hill" - just as the will continue to melt and sea level will continue to rise.

Contribution of Thwaites Glacier, Antarctica, to sea-level rise in the North hemisphere. Credit: Eric Larour @JPL/NASA/CalTech

The breakthrough of this study, he added, was to "reach resolutions high enough to capture as many of these 'speed bumps' as possible and determine their effects in Antarctica while also modeling sea level rise over the entire planet."

The study, titled "Slowdown in Antarctic Mass Loss from Solid Earth and Sea-Level Feedback," was published today in Science.


Explore further

Ice melt in Greenland and Antarctica predicted to bring more frequent extreme weather

More information: E. Larour el al., "Slowdown in Antarctic mass loss from solid Earth and sea-level feedbacks," Science (2019). science.sciencemag.org/cgi/doi … 1126/science.aav7908
Journal information: Science

Citation: Antarctica's effect on sea level rise in coming centuries (2019, April 26) retrieved 21 May 2019 from https://phys.org/news/2019-04-antarctica-effect-sea-centuries.html
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Apr 26, 2019
"The melting of Antarctica's ice sheet is currently responsible for 20-25% of global sea level rise."

How can that be when the Lying Denialists have long claimed that the ice on the Antarctic continent is increasing?

We know that the thermometer makers are involved in a grand conspiracy to fake the warming of the globe, but now we know that the Meter stick makers must be in on the conspiracy as well.


Apr 26, 2019
Antarctica's contribution to sea level rise was mitigated by snowfall
https://climate.n...nowfall/

NASA Researcher: Antarctica Still GAINING Ice
https://principia...ing-ice/

Apr 26, 2019
One meter rise and 3m in 3 centuries will certainly happen and our great children will ask how we were unable to understand the reality of this warming and sea rise.
It will be too late and impossible to stop this sea rise of 15m to 20m over 1000years for our great children swimming in the seas, even by supressing all the CO2 we are making actually,

Apr 26, 2019
Dedereu the only thing that your descendants will remember is how you, just like Jack in The Beanstalk, traded the family cow, your freedom, for some magic beans, AGW. The globalists are winning the fight for world control and like all despots before them they will rule with their best interests in mind.

Apr 26, 2019
MR166, if you are denying in exchange of money from oil company, give me you email address, I will send you some money, and you will be able to live without having the shame that some people will actually believe the bs you are writing and will vote for policies that contribute to the destruction of climate and human life as we know it today because of you

Apr 26, 2019
dedereu
it is very likely that there will be 1m sea level rise by the end of this century, and the melting is accelerating, not slowing down now. So that's much much more than 2m by the end of next century.
Because Greenland melts is not slowing down but accelerating fast.
So your children will start to suffer a lot from this because their children will already be in a very dire situation. We need to act now.

Apr 26, 2019
Because Greenland melts is not slowing down but accelerating fast.


Except for the part of Greenland where that famous glacier is now gaining mass.
Which makes your alarmist crap true BS.

Apr 26, 2019
I live some 60m above sea level so it will be some time before I have beach front property.

Apr 26, 2019
Antarctica's contribution to sea level rise was mitigated by snowfall
https://climate.n...nowfall/

Dumbnuts Antigoracle monkey quoting cherry picked phrases as usual, the the whole article numpty that little snowfall does NOTHING, sea levels is still rising because of Human Induced Climate Change:
Researchers said the increases in snowfall did not contradict observations of mass ice loss in western Antarctica, where they contribute to about 14% of sea-level rise around the world.

Lead author Dr Brooke Medley, from NASA's Goddard Space Flight Center, said: "Our findings don't mean that Antarctica is growing: it's still losing mass, even with the extra snowfall.

Apr 26, 2019
Because Greenland melts is not slowing down but accelerating fast.


Except for the part of Greenland where that famous glacier is now gaining mass.
Which makes your alarmist crap true BS.
Except for the part where your own BS
makes you look like an idiot...Again:
Although Glaciologists measure year-to-year changes in glacier activity, it is the long term changes which provide the basis for statements such as "Global Glacier Recession Continues". Some Skeptics confuse these issues by cherry picking individual glaciers or by ignoring long term trends. Diversions such as these do not address the most important question of what is the real state of glaciers globally?

cont...

Apr 26, 2019
The answer is not only clear but it is definitive and based on the scientific literature. Globally glaciers are losing ice at an extensive rate (Figure 1). There are still situations in which glaciers gain or lose ice more than typical for one region or another but the long term trends are all the same, and about 90% of glaciers are shrinking worldwide

Apr 26, 2019
"The melting of Antarctica's ice sheet is currently responsible for 20-25% of global sea level rise."

How can that be when the Lying Denialists have long claimed that the ice on the Antarctic continent is increasing?

We know that the thermometer makers are involved in a grand conspiracy to fake the warming of the globe, but now we know that the Meter stick makers must be in on the conspiracy as well.


The deniers Are actually so dumb to think they would not be caught in their own BS.. Hilarious !

Apr 26, 2019
The only place in the Antarctic that the AGW Cult can find melting, is in the west, above intense geothermal activity. Sounds like CO2 is afraid of the cold east.
LMAO.

Apr 26, 2019
The deniers Are actually so dumb to think they would not be caught in their own BS..


Miami is not underwater, you're the alarmist fool.

Apr 26, 2019
"As the models used in predicting long-term sea level rise improve, so too do the projections derived from them. Scientists at NASA's Jet Propulsion Laboratory in Pasadena, California, have discovered a way to make current models more accurate. In doing so, they have also gotten one step closer to understanding what Antarctica's ice sheet - and the sea level rise that occurs as it melts - will look like centuries from now."

Improve? But the MODELS had been presented to the humans as "accurate" all along and didn't need improvement in accuracy.
So if there needs to be "improvement in the accuracy of the models", have they been feeding the gullible a lot of BS all this time?
This is so strange and I am so disheartened by this turn of events. I had hoped for and expected the absolute TRUTH from these 'climate scientists' that all humans and animals were going to drown as the seas rise to the top of mountains. And now they're saying that their science needs improvement???

Apr 26, 2019
Their talk of "predictions" and "projections" and "improve accuracy" has many humans wondering if they (the venerable Climate Scientists) have borrowed rrwillsj's ouija board or a combination of ouija and reading tea leaves; or maybe examining each others' head shapes, or perhaps mumbling some "spells" to conjure up the ghost of the weather reports.
I do agree that cutting down forests to make paper and firewood is defeating the role of trees existing as a "Carbon Sink" and that forests should be encouraged for growth and only the underbrush should be removed to help prevent forest fires.
As a natural-born "tree hugger", my human host is torn between his curiosity of how it would be if the seas rise to the tops of mountains, and his hate to see all of his beloved trees washing away.
Oh wurra wurra, what a quandary.

Apr 27, 2019
Exchanging an ice-locked Greenland for some crappy little islands and crumbling infrastructure (that no one can afford to fix) coastal cities sounds pretty good.

Apr 27, 2019
SEU
And now they're saying that their science needs improvement???

That gets to the heart of the issue - right? So if a medical scientists were to announce that medical science does not need improvement - SEU would celebrate the perfection of knowledge? What about astrophysics? A great comparison here would be meteorology - right? Of course it is not perfect, but we know a lot more than we did yesterday. We cannot say exactly where the hurricane will hit - but the models are IMPROVING. The anti progress crowd demand perfection - or it is 'BS.' Maybe your 'human host' could learn a little humility!

Apr 27, 2019
The only place in the Antarctic that the AGW Cult can find melting, is in the west, above intense geothermal activity. Sounds like CO2 is afraid of the cold east.
LMAO.

You absolute Dimwit, this has LONG proven to be false, just like the rest of all your dumb Lies !

East Antarctica is no longer in mass balance, but losing ice mass.
The results are published in Accelerated Antarctic ice loss from satellite gravity measurements (Chen 2009) which compares two independent measurements of Antarctic ice loss. One method is the GRACE satellites which measure changes in gravity around the Antarctic ice sheet. The latest GRACE data analyses measurements from April 2002 to January 2009. Another method to determine mass balance is to combine snowfall estimates with InSAR satellites. These use radar waves to measure the speed of ice sheets as they calve into the ocean.

Apr 27, 2019
The deniers Are actually so dumb to think they would not be caught in their own BS..


Miami is not underwater, you're the alarmist fool.

Your head is clearly underwater Old Fart, you have no cooking clue as to how climate Science works, neither does your own Sockpuppets you are blowing smoke into here.

Apr 27, 2019
accuracy of the models", have they been feeding the gullible a lot of BS all this time?
This is so strange and I am so disheartened by this turn of events. I had hoped for and expected the absolute TRUTH from these 'climate scientists' that all humans and animals were going to drown as the seas rise to the top of mountains. And now they're saying that their science needs improvement???

You are dumber than a rock really, the evidence have always pointed to the truth, the improvements just enhances the truth you total Dimwit, it points to the same thing: Human Induce Climate Change is Changing the climate for the worse ! ! ! ! YOU have no evidence to Challenge the science ! ! ! !

Apr 27, 2019
Their talk of "predictions" and "projections" and "improve accuracy" has many humans wondering if they (the venerable Climate Scientists) have borrowed rrwillsj's ouija board or a combination of ouija and reading tea leaves; or maybe examining each others' head shapes, or perhaps mumbling some "spells" to conjure up the ghost of the weather reports.

No Most humans Is NOT wondering about the Credibility of the Science, They know the Truth because we post it here everyday, and they see your utter foolishness here everyday, hilarious and absolutely priceless, Only a few Morons such as YOU that still believes in Ouija boards or spin the bottle can come up with all the air blown drivel you put up as laughing stock for the world here Everyday ! ! ;)

Apr 27, 2019
SEU
And now they're saying that their science needs improvement???

That gets to the heart of the issue - right? So if a medical scientists were to announce that medical science does not need improvement - SEU would celebrate the perfection of knowledge? What about astrophysics? A great comparison here would be meteorology - right? Of course it is not perfect, but we know a lot more than we did yesterday. We cannot say exactly where the hurricane will hit - but the models are IMPROVING. The anti progress crowd demand perfection - or it is 'BS.' Maybe your 'human host' could learn a little humility!
says greenonions

But you see, greeno, that the extreme profundity of the AGW story is largely dependent on these MODELS that climate scientists are moving from their labs out into the world, and causing such as
A.Ocasio-Cortez and Al Gore to suggest that flying in airplanes and riding in anything that uses petrol is tantamount to murdering the planet and humans.

Apr 27, 2019
Your head is clearly underwater Old Fart, you have no cooking clue as to how climate Science works, neither does your own Sockpuppets you are blowing smoke into here.


Lol, you're just an unaccomplished punk spewing crap all over the place with your alarmist foolishness. Yes, unaccomplished. Only the unaccomplished are very arrogant over stuff they can't be sure of, having accomplished nothing in their lives of any value.

Apr 27, 2019
-contd-
@greenonions
Your conflating AGW models that conflict with the truth of the matter, with the other sciences such as astrophysics and the medical fields is incongruous at best - with the added fears that is being touted to unsuspecting humans that this "global warming" is bound to kill off all human and animal life on the planet in a number of years. These AGW fears has resulted in severe 'political unrest', mainly in the western hemisphere and the enormous interest in Socialism amongst the Millennials and GenerationX.
Due to the propaganda of "Anthropogenic Climate Change" fears, there is likely a revolution coming to the Free World where freedom and the Constitutional Rule of Law will be replaced by a particular brand of Socialism where any opposition to that social order will be swiftly clamped down, and possibly eliminated.
It was never explained that the AGW models needed improvement before - just that the requirements were to be followed and fossil fuels prevented

Apr 27, 2019
-cpmtd-
@greenonions
This planet Earth is programmed to RECYCLE. That is its/her #1 priority. What is above the mantle eventually gets drawn down into the upper mantle and even to the lower mantle and the upper core of Earth. This is the nature of the planet that you live on.
You are interlopers, like insects running around on the surface, building your homes, procreating, fighting and dying. In the meantime, your scientists are messing with the atoms and particles of your very existence, but you don't protest such interventions and it continues. Just as AGW models need improvement, other sciences do also - particularly in the medical fields of virus and bacterial infections. They are curious and want to know, but they are creating monsters in their labs that the public knows nothing about.
Messing with Nature can be very dangerous; and promoting fear of weather/climate also can have bad consequences, especially politically and ideologically. Perhaps that is what you want?

Apr 27, 2019
Simulations and calculations are not necessary, it is sufficient to look to the past climate and real past sea levels.
125000 years ago the sea level was 3m to 5m higher than to day and temperatures higher by 2°C during 5000years with quite less CO2 than to day. Slowly after, strong colds came backs, 5°C to 10°C less and sea level decreasing by 120m in 100K years and then in less than 10000 years rised again by 120m between 16000 to 6000 years ago, with strong heating and quite les CO2 than to day.
If you look to the past of earth climate with CO2 levels similar to actually, i.e. older than 3 to 5 millions years ago, the temperature was quite higher like sea level and quite less ice on the poles.
Thus it is proved that the temperature and sea level will rise abrutly, impossible to stop like in the past, because the earth climate is unstable between two states cold and hot, lile a flip flop triggered by nearly nothing ans impossible to stop after.
Clearly the earth climate is unstable

Apr 27, 2019
Your head is clearly underwater Old Fart, you have no cooking clue as to how climate Science works, neither does your own Sockpuppets you are blowing smoke into here.


Lol, you're just an unaccomplished punk spewing crap all over the place with your alarmist foolishness. Yes, unaccomplished. Only the unaccomplished are very arrogant over stuff they can't be sure of, having accomplished nothing in their lives of any value.

Lol.. Your Unaccomplished Drivel speaks for itself for the past 2 decades, Time and Time again, Lying, misleading, and formulating absurd and absolutely hilarious comments lol... i am very happy and proud with all my accomplishments thank you, you on the other hand are fooling yourself and your puppets everyday that living in your bonobo make belief land is real, luckily every other normal person knows the truth ;)

Apr 27, 2019

Due to the propaganda of "Anthropogenic Climate Change" fears, there is likely a
It was never explained that the AGW models needed improvement before - just that the requirements were to be followed and fossil fuels prevented

AGW models reflects the science, nothing is ever perfect, however the Sheer Vast amount of Evidence pointing towards Human Induce Climate change is far beyond evident, Science reflects reality, it becoming more accurate does not give YOU any credit in your utter ignorant and foolish disbelief in science and reality itself.

Apr 27, 2019
Simulations and calculations are not necessary, it is sufficient to look to the past climate and real past sea levels....
****
Thus it is proved that the temperature and sea level will rise abrutly, impossible to stop like in the past, because the earth climate is unstable between two states cold and hot, lile a flip flop triggered by nearly nothing ans impossible to stop after.
Clearly the earth climate is unstable


Well said, but clearly antigoracle and his trope of socks above cannot even understand basic science nor even reality, let alone make out what the top and bottom of a chart is.

Apr 27, 2019
@ Helo @ SEU
AGW models reflects the science, nothing is ever perfect, however the Sheer Vast amount of Evidence pointing towards Human Induce Climate change is far beyond evident, Science reflects reality, it becoming more accurate does not give YOU any credit in your utter ignorant and foolish disbelief in science and reality itself
Helo nails it perfectly SEU
Messing with Nature can be very dangerous; and promoting fear of weather/climate also can have bad consequences, especially politically and ideologically. Perhaps that is what you want?
Messing w/ nature can indeed be dangerous - but a dear friend who is dying of cancer - is willing to let the oncologist try. Sadly - time is running out for Bob (as it did last year for another dear friend.) Please embrace your stupidity deniers - but hide in your basements of stupidity - and let the science keep moving forward.

Apr 27, 2019
Burning oil is without end with oil lobying in theses posts, up to have no more oxygen to breathe!
There is stored in earth so much biotic fuel of any kind, to be able to burn all the oxygen that we breathe, suffocating and dying after heating toot much earth ( fuel, oil, methane ).
For each molecule of breathing oxygen made by life, living organisms have stored an atom of carbon stored as fuel inside earth, so that burning fuel is without end up to burn all the oxygen up to human end.
Living organisms on earth renew oxygen every 0.2 million years approximately. Thus life over 600 millions years on earth making oxygen has stocked 600/0.2=3000 times of carbon inside the ground of earth than necessary to burn all oxygen. even if a lot is recycled.
It remains in earth fossils fuel and oil quite more than necessary to burn all oxygen into CO2 and nothing to breathe !!
This proved reality is never said and too much scaring.

Apr 27, 2019
Discovery of high geothermal heat at South Pole
https://phys.org/...ole.html

NASA: Heat Source Under West Antarctica
https://www.jpl.n...ure=6996

Anomalously high geothermal flux near the South Pole
https://www.natur...-35182-0

Apr 27, 2019
Discovery of high geothermal heat at South Pole
https://phys.org/...ole.html


"The process of melting we observe has probably been going on for thousands or maybe even millions of years and isn't directly contributing to ice sheet change."

NASA: Heat Source Under West Antarctica
https://www.jpl.n...ure=6996


"Although the heat source isn't a new or increasing threat to the West Antarctic ice sheet, it may help explain why the ice sheet collapsed rapidly in an earlier era of rapid climate change"

Anomalously high geothermal flux near the South Pole
https://www.natur...-35182-0


"We conclude that local geothermal flux anomalies could be more widespread in East Antarctica."

Apr 27, 2019

Due to the propaganda of "Anthropogenic Climate Change" fears, there is likely a
It was never explained that the AGW models needed improvement before - just that the requirements were to be followed and fossil fuels prevented

AGW models reflects the science, nothing is ever perfect, however the Sheer Vast amount of Evidence pointing towards Human Induce Climate change is far beyond evident, Science reflects reality, it becoming more accurate does not give YOU any credit in your utter ignorant and foolish disbelief in science and reality itself.
says HM

I personally have nothing against science. What I AM against is FAUX SCIENCE where conclusions are presented to the global communities that quite often require a reversal due to the errors of such conclusions. Accordingly, Greenland should have been underwater by now, and any land masses below or AT SEA LEVEL should have been washed away by tidal action. Nature is far stronger than what is scientifically concluded

Apr 27, 2019
Their talk of "predictions" and "projections" and "improve accuracy" has many humans wondering if they (the venerable Climate Scientists) have borrowed rrwillsj's ouija board or a combination of ouija and reading tea leaves; or maybe examining each others' head shapes, or perhaps mumbling some "spells" to conjure up the ghost of the weather reports.

No Most humans Is NOT wondering about the Credibility of the Science, They know the Truth because we post it here everyday, and they see your utter foolishness here everyday, hilarious and absolutely priceless, Only a few Morons such as YOU that still believes in Ouija boards or spin the bottle can come up with all the air blown drivel you put up as laughing stock for the world here Everyday ! ! ;)
says runi

What ouija boards are you referring to. I don't own one. I was referring to rrwillsj's seeming belief in those boards - she talks about them enough.
Not everyone has a physorg account or reads this site, ya know.

Apr 27, 2019
@ Helo @ SEU
AGW models reflects the science, nothing is ever perfect, however the Sheer Vast amount of Evidence pointing towards Human Induce Climate change is far beyond evident, Science reflects reality, it becoming more accurate does not give YOU any credit in your utter ignorant and foolish disbelief in science and reality itself
Helo nails it perfectly SEU
Messing with Nature can be very dangerous; and promoting fear of weather/climate also can have bad consequences, especially politically and ideologically. Perhaps that is what you want?
Messing w/ nature can indeed be dangerous - but a dear friend who is dying of cancer - is willing to let the oncologist try. Sadly - time is running out for Bob (as it did last year for another dear friend.) Please embrace your stupidity deniers - but hide in your basements of stupidity - and let the science keep moving forward.


Nobody is trying to stop science - only FAUX SCIENCE that has bad consequence

Apr 27, 2019
under the ice scientists have found intense geothermal heat seeping up from Earth's interior. The heat production that they measured is nearly FOUR TIMES THE GLOBAL AVERAGE—"HIGHER THAN 99 PERCENT OF ALL THE MEASUREMENTS MADE ON CONTINENTS AROUND THE WORLD

https://www.scien...al-life/

Apr 27, 2019
Burning oil is without end with oil lobying in theses posts, up to have no more oxygen to breathe!
There is stored in earth so much biotic fuel of any kind, to be able to burn all the oxygen that we breathe, suffocating and dying after heating toot much earth ( fuel, oil, methane ).
says dedereu

That is the natural recycling effect of Earth. Also of the Universe. On Earth, it is the plants/vegetation that live-die-and their oils go into the ground and mix with volatiles in the mantle, then transform into fossil fuels. To prevent that from happening, you must eliminate ALL plants/vegetation from Earth so that they don't die and are recycled/transformed into that which burns.
Plants use Carbon Dioxide to breathe. Humans/animals use Oxygen/Nitrogen to breathe. Both plants and animals have a symbiotic relationship. To keep the Oxygen supply intact you must eliminate ALL Oxygen-breathing life forms such as humans and animals. Kill off half the population removes the problem

Apr 27, 2019
-contd-
@dedereu

In addition to killing off half the human population of the Earth, you must also kill off the vast majority of animals, both wild and domesticated. They also breathe Oxygen. Get rid of the birds also.
Humans are an anomaly on this planet. As I said in another physorg phorum, humans are like insects on the surface of Earth who live, procreate, die and are recycled back into the Earth. Those are the 4 essentials of your existence. Everything else is only necessary to each individual taste/desire.
You don't belong here on this beautiful planet. All you do is make trouble, wars and willfully sin.
MY personal feeling is that the creation of humans was a big mistake. The animals and plants, on their own OTOH were perfectly suited as symbiotic partners and, perhaps, one animal could have evolved to become the best stewards this planet could have.
But instead, humans were created and no good has come of it.
Perhaps when humans have died off, another species will rise

Apr 27, 2019
under the ice scientists have found intense geothermal heat seeping up from Earth's interior. The heat production that they measured is nearly FOUR TIMES THE GLOBAL AVERAGE—"HIGHER THAN 99 PERCENT OF ALL THE MEASUREMENTS MADE ON CONTINENTS AROUND THE WORLD

https://www.scien...al-life/


From the paper

"We do not hypothesize that elevated heat flux below the WAIS explains the instability of the ice sheet, nor that heat flux measured at SLW is regionally representative; however, locally elevated basal heat flux may help researchers to understand why parts of some ice sheets have been so sensitive to recent changes in climate and oceanic conditions"

https://advances....093.full

Apr 27, 2019
SEU
Nobody is trying to stop science - only FAUX SCIENCE that has bad consequence
And you of course are the arbiter of what is good and bad science? As Helo accurately points out above - there is overwhelming evidence to support the current understanding regarding what is happening with our climate. You - who clearly does not understand even the basics - join voices with the idiots on this board like goracle - and declare yourself the great arbiters of what science is acceptable - and what is not.
So tell us great arbiters. Is the climate warming? If no - show us the data. If yes - what is the driver of that warming?

Apr 27, 2019
Fire below, ice above: volcanoes, glaciers and sea level rise
https://climate.n...el-rise/

Apr 27, 2019
Fire below, ice above: volcanoes, glaciers and sea level rise
https://climate.n...el-rise/


From your link

"The heat welling up from Earth's interior beneath ice sheets and glaciers has nothing to do with the relatively rapid change in climate over recent decades, driven mainly by human emissions of greenhouse gases that warm the atmosphere. Heat sources from the deep Earth can remain steady for 50, 90 or 100 million years; human-driven climate change is occurring over mere decades and centuries."

Apr 27, 2019
SEU
Nobody is trying to stop science - only FAUX SCIENCE that has bad consequence
And you of course are the arbiter of what is good and bad science? As Helo accurately points out above - there is overwhelming evidence to support the current understanding regarding what is happening with our climate. You - who clearly does not understand even the basics - join voices with the idiots on this board like goracle - and declare yourself the great arbiters of what science is acceptable - and what is not.
So tell us great arbiters. Is the climate warming? If no - show us the data. If yes - what is the driver of that warming?
says greeno

This past winter of 2018 - 2019 has been the coldest in many parts of the northern US and Canada. So, IOW you would have preferred that those living in those regions wouldn't have had access to fossil fuels for the purpose of heating their homes & cooking their food? Did you & your family suffer from the cold or were you warm?

Apr 27, 2019
It is so easy to condemn those humans for their usage of fossil fuels to stay comfortable and warm in winter and cool in a hot summer. Going by that, I would imagine that those of you who are doing the condemning have already taken it upon yourselves to forego the comforts of a warm house in winter and cool A/C when it is sweltering outdoors. There are humans whose health and bodies cannot take extreme temp of hot OR cold and often die due to those extremes.
However, YOU ONLY consider the heat, even if it the heat of summer to blame such hot temps on AGW. But thousands of years ago on the planet, there were extremes of temps and weather, but nobody ever complained of AGW or the hot or cold weather. Why? Because they did what they had to DO to keep warm and be as comfortable as possible. And here in the 21st century, the poor snowflakes are so worried that they will all die, not because of the heat, but because of CO2 everywhere. But you forget that every time you EXHALE you are...

Apr 27, 2019
Every time you exhale, you are contributing to the surplus of CO2 in the atmosphere and oceans.
Will you stop breathing? It is YOU that is causing AGW by YOUR breath.
Are any of you willing to give up your life to stop AGW? If not, then why not? Animals also exhale CO2. Will you be willing to kill off wild and domesticated animals to stop AGW? You have to make a choice if you really believe that AGW is happening. Anything less makes you a LIAR.

Apr 27, 2019
Anything less makes you a LIAR
Or perhaps a pragmatist. I notice you ducked the question about climate warming.
From before -
promoting fear of weather/climate also can have bad consequences, especially politically and ideologically. Perhaps that is what you want?
I have no interest in promoting fear. Stop making shit up. I'll tell you what I want. I want us to cure cancer (and all the other diseases that afflict us), to develop better cars/computers/planes/trains etc. etc. I want us to figure a way to bring everyone a rich meaningful life - at the same time as we leave the planet survivable. Perhaps you get the picture. Or perhaps you are too busy trying to convince the rest of the human race - that you are so special - you get to be the arbiter of what is good, and what is bad.

Apr 28, 2019
Anything less makes you a LIAR
Or perhaps a pragmatist. I notice you ducked the question about climate warming.
From before -
promoting fear of weather/climate also can have bad consequences, especially politically and ideologically. Perhaps that is what you want?
I have no interest in promoting fear. Stop making shit up. I'll tell you what I want. I want us to cure cancer (and all the other diseases that afflict us), to develop better cars/computers/planes/trains etc. etc. I want us to figure a way to bring everyone a rich meaningful life - at the same time as we leave the planet survivable. Perhaps you get the picture. Or perhaps you are too busy trying to convince the rest of the human race - that you are so special - you get to be the arbiter of what is good, and what is bad.

says g o

I am not the arbiter of anything - just a mere scholar and interested observer - as I have said many times before in physorg.

Apr 28, 2019
-contd-
@green onions
As far as being 'special', I am special in my own right, and my Staff certainly are a very special lot, as well as my human host and his family and friends. Almost everyone is special in their own way. But as to 'global warming' or AGW, the climate/weather is ALWAYS changing. I believe that there was a story on the radio that the Sun's cycle is slowing down and there is less and less solar activity where it will get much cooler on this planet. I didn't get to hear all of it and it ended too soon. Perhaps the news is on Drudge.
I did not mean YOU, in particular, as promoting fear of global warming/climate change. But the young impressionables do take it to heart when they hear/read of such things that make them fearful of the shape of things to come in their lifetime. Many of them might not even contemplate marriage and children due to that fear.
But we are ALL waiting for Miami in Florida to find itself underwater as the Atlantic rolls in to inundate it.


Apr 28, 2019
@greeno
Not that any of us doubters (not denialists) would want to see Miami underwater. You might call us "sceptics" or "doubters" since at this time there is nothing to deny. The streets of Miami aren't flooded. Australia hasn't sunk below the waves. Such accusations of denial are just silly.
26 - 27 degree Celsius or higher in the wintertime may be cause for concern, depending on latitude. But to worry about those temps in summertime is idiotic.
I think that all the rest of us "sceptics" are noticing that the humans of this world are changing in attitude politically, ideologically and in volatility due to the anger that they are starting to exhibit because of the fear that has come upon them from all the propaganda of AGW. They are looking for someone to blame, and they will find their victims to place blame on. Law enforcement may become helpless because of it. And it will become very difficult to calm them.

Apr 28, 2019
Every time you exhale, you are contributing to the surplus of CO2 in the atmosphere and oceans.
Will you stop breathing? It is YOU that is causing AGW by YOUR breath.
Are any of you willing to give up your life to stop AGW? If not, then why not? Animals also exhale CO2. Will you be willing to kill off wild and domesticated animals to stop AGW? You have to make a choice if you really believe that AGW is happening. Anything less makes you a LIAR.


This comment reveals breathtaking ignorance of the science. Exhaled CO2 is part of the 'carbon cycle', and does not contribute to atmospheric CO2.

Plants absorb CO2 from the air and use it for growth. We eat the plants, or the animals that eat the plants, and we breathe it back out. There is no net increase.

If you are that ignorant of the science, should you really be posting your opinions on here?

Apr 28, 2019
SEU
I believe that there was a story on the radio that the Sun's cycle is slowing down and there is less and less solar activity where it will get much cooler on this planet
It is interesting that as a denier - you cannot read the above statement - and hear the ignorance of your posts. Science is a specific process. It involves documentation, collaboration, multiple lines of validation, repeatability etc. So you declare that the earth is not warming - it is in fact cooling. All based on a story that you BELIEVE was on the radio. The concerns being voiced by the young people you speak of - is based on science. You don't know what that word (science) means.

Apr 28, 2019

I personally have nothing against science. What I AM against is FAUX SCIENCE where conclusions are presented to the global communities that quite often require a reversal due to the errors..


Quote of the day, You build your very existence about being Against Science, Don't you come as you Always do, Pretend you are not against science O No... YOU scrape at every bit of dust to try harder than life to Prove how ignorant you are and how much you don't like the Very Truth. Because if you weren't against Science you would've realized VERY early on that The Overwhelming Evidence points to Human Induced Climate Change. Your silly side arguments is far beyond Worthless, it only weakens your stance every time you post and those you represent, so a double slam onto you and your masters every day. You can spell out all the little errors you want about Science until you are purple in the face, the Overwhelming Conclusive Evidence points to Climate Change.

Apr 28, 2019
@S_E_U.

Please, mate, don't keep adding your own uninformed/uncomprehending denialist crap to the longstanding pile from the longtime denialisms posting here over the years. I already pointed out the many detrimental consequences of AGW transition from prior settled to newer unsettled climate/weather patterns. I even pointed out the increasing back-to-back climate disasters that have been increasing globally from which we are now not able to recover anymore before the next disaster hits. Eg, look at recent years cyclone/storm etc disasters record for Australia; and current back-to-back cyclone disasters in Mozambique over the last few weeks! Mate, you are either misinformed/uninformed/careless of the factual AGW-related reality evolving under your nose. Even if colder latitudes warm a little, it still means a lot of damage/costs for them too (ie, increased probabilities of frost/storm damage from unsettled transitional weather/climate patterns and etc.) Rethinkit, @S_E_U. :)

Apr 28, 2019
SEU
I believe that there was a story on the radio that the Sun's cycle is slowing down and there is less and less solar activity where it will get much cooler on this planet
It is interesting that as a denier - you cannot read the above statement - and hear the ignorance of your posts. Science is a specific process. It involves documentation, collaboration, multiple lines of validation, repeatability etc. So you declare that the earth is not warming - it is in fact cooling. All based on a story that you BELIEVE was on the radio. The concerns being voiced by the young people you speak of - is based on science. You don't know what that word (science) means.

says green onion

As you wish. I will no longer post my comments in any phorum concerning the need to blame humanity for changes in climate/weather and any possible future sea rise. You insist on calling me a 'denier' even though I regard myself as a sceptic and I have my doubts.
Good luck.

Apr 29, 2019
even though I regard myself as a sceptic and I have my doubts
Having doubts about things is not the problem. Needing to voice your doubts as facts - makes you a denier. Needing to present false information - makes you a denier. Let me give one example
But the MODELS had been presented to the humans as "accurate" all along and didn't need improvement in accuracy
Completely false. The models are understood to be models - and much is made of presenting "error bars." In other words - the limitations of the models is understood.

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