Greenland ice sheet is close to a melting point of no return

https://news.agu.org/press-release/the-greenland-ice-sheet-is-close-to-a-melting-point-of-no-return/

by geox • 3 years ago

183 203 3 years ago

news.agu.org

adrianN5• 3 years ago

Ah well, here we go. I guess it's what we deserve for sitting on our hands for fifty years. So long and thanks for all the fish.

nomel2• 3 years ago

For reference, high tide where I am is ~20ft. Winter storms bring it up another 20. This will definitely require moving inland, but definitely not a “thanks for all the fish” scenario.

foobarian• 3 years ago

Yeah if anything you’ll have more access to fish now! sob

adrianN5• 3 years ago

The greenland ice sheet is but one of the tipping points. The real problem of course will not come from warming or sea level rise per se, but from hundreds of millions of people whose homeland becomes uninhabitable for some reason or other. Some of those people have nuclear weapons.

tomp• 3 years ago

Non-clickbait title: it’s halfway there.

aaa_aaa• 3 years ago

If they are so sure about amounts I expect a date.

nomel2• 3 years ago

This doesn’t make sense. Volume is measurable. Satellites do it. There’s little prediction, it has already been done. Predicting when something will happen, in the future, is much harder.

For example, you could measure a hamburger in front of me. Predicting when, and if, I’ll eat it is much harder.

reportgunner4• 3 years ago

Not that hard. You will eat it before it gets bad, possibly before it gets cold. If you are having a burger at a restaurant you will eat it before the restaurant closes. I predict you will eat it in about 1 hour. Seeing your post was 19 hours ago I doubt you still have the burger in front of you.

antibasilisk• 3 years ago

BOE by 2030.

Eumenes• 3 years ago

Ask Al Gore

zamfi• 3 years ago

Let me preface this by saying that I believe climate change and decarbonization to be one of the critical challenges of our time. That said…

This article’s title and its content are completely at odds. Here’s a critical passage:

As the ice sheet melts, its surface will be at ever-lower elevations, exposed to warmer air temperatures. Warmer air temperatures accelerate melt, making it drop and warm further. Global air temperatures have to remain elevated for hundreds of years or even longer for this feedback loop to become effective; a quick blip of 2 degrees Celsius (3.6 degrees Fahrenheit) wouldn’t trigger it, Höning said. But once the ice crosses the threshold, it would inevitably continue to melt. Even if atmospheric carbon dioxide were reduced to pre-industrial levels, it wouldn’t be enough to allow the ice sheet to regrow substantially.
“We cannot continue carbon emissions at the same rate for much longer without risking crossing the tipping points,” Höning said. “Most of the ice sheet melting won’t occur in the next decade, but it won’t be too long before we will not be able to work against it anymore.”

So…we potentially have hundreds of years to bring temperatures back down before the “tipping point” triggers? Forgive me for not being super alarmed.

100 years ago we’d just barely started dumping carbon into the atmosphere. That is a long time.

EDIT: to be clear, yes of course it not enough to stop dumping carbon into the atmosphere in the next hundred years, but it does give us (potentially) decades to figure out large-scale carbon capture and sequestration even if we exceed the thresholds described here (1000 gigatons).

Scarblac3• 3 years ago

Well, once the CO2 is in the air and stays there, the warming will happen. Then hundreds of years later the threshold is passed and then even removing it from the air (something we can't do) won't help anymore.

Once we've emitted enough CO2 to reach 2 degrees warming, it will almost certainly happen that all the ice melts. And there's a point where that will be certain, even if we learn how to remove all CO2 we emitted from the atmosphere. Is how I read it.

The ice on this island is enough to cause about 7m of global sea level rise on its own, iirc.

gridspy4• 3 years ago

Fortunately the CO2 does eventually leave our atmosphere, given about 50 years.

BirAdam2• 3 years ago

Well, if that’s an accurate measure of sea level rise, then ocean salinity would drop significantly and cool the planet very rapidly, and by quite a bit. Not sure what outcome of that would be, but dramatic sudden cooling would likely devastate agriculture.

gridspy4• 3 years ago

No, the story is that we begin the melting by raising the earth's temperature a little. You'd think that if we reduced our carbon emissions, the ice would stop melting.

But once the ice crosses the threshold, it would inevitably continue to melt

Bear in mind that the atmosphere retains carbon dioxide for ~50 years, that other melt events are dumping methane into the atmosphere from permafrost. It's not just one factor heating the planet.

graeme2• 3 years ago

You'd think that if we reduced our carbon emissions, the ice would stop melting.

People think of climate change like a river. You reduce emissions, you reduce the size of the emissions, you reduce the size of the problem.

But it's more like a bathtub. Emissions are the water filling the tub, but the real problem is the water level already in the tub. If you reduce emissions, you reduce the size of the flow into the tub. But....water is still flowing in and the water is still rising.

If we had zero emissions it would take earth systems much much longer than 50 years to bring things back down to where they were.

upsidesinclude2• 3 years ago

have to remain elevated for hundreds of years or even longer for this feedback loop to become effective.

To further reiterate:

hundreds of years or even longer for this feedback loop to become effective.

tzs• 3 years ago

Bear in mind that the atmosphere retains carbon dioxide for ~50 years

It's 300-1000 years [1].

[1] https://climate.nasa.gov/news/2915/the-atmosphere-getting-a-...

alex_young• 3 years ago

From the same page:

  Previous research identified global warming of between 1 degree to 3 degrees Celsius (1.8 to 5.4 degrees Fahrenheit) as the threshold beyond which the Greenland Ice Sheet will melt irreversibly.

We're already at 1.2c above pre-industrial levels. Although it will take a long period of exposure to warm air for the ice to melt, we've already been doing that for a long time. It doesn't seem reasonable to say we have hundreds of years to figure out a solution.

kiliantics• 3 years ago

It doesn't seem reasonable to say we have hundreds of years to figure out a solution.

We've also known about the global warming problem in great detail for well over 50 years at this point. Since then we haven't figured it out but made it worse -- most of our cumulative emissions have happened in just the last 50 years. Why do people still think we can figure this out in a matter of decades without having to drastically change our fossil fuel habits?

epolanski3• 3 years ago

Only 1.2?

Definitely feels like much more.

lozenge2• 3 years ago

Stopping emissions (which isn't even in the Overton window) means CO2 concentration will slowly reduce.

"Between 65% and 80% of CO2 released into the air dissolves into the ocean over a period of 20–200 years. The rest is removed by slower processes that take up to several hundreds of thousands of years, including chemical weathering and rock formation. This means that once in the atmosphere, carbon dioxide can continue to affect climate for thousands of years."

During the time of elevated CO2 levels, the temperature continues to rise.

Arnt3• 3 years ago

Temperature is a function of elevation. It's saying that if you move the surface down by removing the top layer of material (ice), the temperature at the surface increases, all else being equal including the temperature at sea level.

The effect is real, and big enough to feel with the naked skin. One generally says one kelvin per 100m elevation, although the Greenland surface will be different from that rule of thumb.

saiya-jin2• 3 years ago

One generally says one kelvin per 100m elevation

That's not true in Europe nor Asia nor South America nor Africa, although I didn't climb mountains specifically in Greenland to be factual. Better value is cca 0.6C per 100m, or 6C per 1km (sorry, no conversion to feet/yard vs F and similar fun games for lazy sunday afternoon... seriously, with all the love, fix this shit guys, we are not living in 15th century when similar stuff was common and accepted).

It depends on many factors including humidity and local meteorology.

That part discussed about moving surface down doesn't make sense - you can lower glacier only to base rock/soil level. But at this level, where glacier starts, its already the dreaded temperature they want to avoid, so glaciers should be melting from the bottom with this logic. If they mean that once ice melts the rock temperature rises well yeah, that's a no brainer, its a different surface. Ice has surface temperature below/around 0, any rock hit with sun can easily surpass that even during winter.

I know reality is more complex out there, one of my todos is to have sleepover (no tent) on nearby Mer de Glace in Chamonix, France. Just me, gazillion stars, mountains crumbling around me and glacier cracking beneath my ass.

Belituio• 3 years ago

100 years is not a lot. Your kids kids will already be affected.

It feels very short sides.

dvh• 3 years ago

https://upload.wikimedia.org/wikipedia/commons/thumb/8/8b/To...

saiya-jin2• 3 years ago

so Greenland will soon have an inland lake

neerd• 3 years ago

Does anyone have suggestions for how an individual can feel like they’re actually doing something. I already make donations to organizations that advocate for climate activism, vote at local and national level for candidates what support climate action, and in my own live I try to be conscious about the environment impacts or my lifestyle and purchases. Despite all that I still feel like I'm changing nothing. I still feel like there are theses colossal and obvious problems bearing down on our species and all I can do is watch it happen. I hate this feeling of helplessness.

mbgerring2• 3 years ago

Quit your job and go to work full time on climate. Start here: https://climatebase.org

scrollaway2• 3 years ago

This is the only correct answer from all of these. The highly educated are far more likely to make a significant difference especially if they have knowledge that spans multiple fields.

EngManagerIsMe5• 3 years ago

So I looked through Climatebase, and I found it hard to evaluate the companies listed. There's plenty of listings, but no (easy) way to say, "Show me one entry per company, for every company hiring engineering leaders." I either got drowned in "this company has 35 reqs open, so here's 35 entries" or "you've narrowed your filters so much that you only see two companies".

Not quite easy to figure out "Which set of companies are hiring for a role I can fulfill?"

Edit: And within moments, I of course find the URL to do exactly what I want: https://climatebase.org/organizations?l=&q=Engineering%3A+So...

iLoveOncall• 3 years ago

Buy a lot of AC machines but make them cool the outside and put the exhaust in your house!

mongol• 3 years ago

What sacrifices can you do in your own life? That is certainly the easiest and most certain way you can contribute. The impact will be limited no doubt, but the most obvious place to start.

airstrike• 3 years ago

What sacrifices can you do in your own life? That is certainly the easiest and most certain way you can contribute. The impact will be limited no doubt, but the most obvious place to start.

Respectfully, I think a better plan is to work hard to reach a position of power and/or leadership, and then make changes that affect millions. Minor changes in my household have relatively zero impact in the big picture.

imwithstoopid4• 3 years ago

live like its 1880

buy stuff as if the garbage man does not exist...in 1880 they didn't have trash removal

buy one set of clothes you wear pretty much every day until they fall off of you

buy a few tools that will last you forever

no more disposable anything, remember the trash man doesn't exist

wash clothes by hand

cook everything yourself, even better grow your own food

sorry no biking, rubber is an industrial process...you walk everywhere just like great grampa did

no need to worry about fossil fuels...you won't be using them in any capacity other than maybe a nice fire in the winter in your wood burning stove which will be the only "appliance" you own (good news - they last forever!)

etc etc

this is probably what sustainable living looks like until we get star trek matter synthesizers

you'll never get a date living like this but you'll also never again worry about 98% of the crap of modern life

RC_ITR• 3 years ago

live like its 1880
sorry no biking, rubber is an industrial process

Bicycles had rubber tires as early as 1870 and before that, rubber was widely available in the 18th Century.

If you're going to snark, at least snark correctly.

snozolli2• 3 years ago

sorry no biking, rubber is an industrial process...you walk everywhere just like great grampa did

This is ridiculous. If petroleum were used solely to produce bicycle tires and things like seals for appliances, the world would be unimaginably 'greener'.

That entire list is just disingenuous, defeatist nonsense.

awb2• 3 years ago

you'll never get a date living like this

There are plenty of people around the world that live like this and want to raise their family this way.

And lots of intentional living communities.

But location is everything.

BirAdam2• 3 years ago

This would mean massive deforestation to heat and build with wood. That means much more carbon than most people currently produce with less land taking it in. Burning wood ain’t the answer. Also, 1800s was the era where coal became available for businesses and the wealthy, and that’s also a bad idea. To suggest no major energy source would likewise be bad as billions would die.

khaki54• 3 years ago

The best thing you can do in continue to innovate and build more efficient things. We can use that technology to stop wasting resources, stop pushing negative externalities to the environment, and rapidly bring the entirety of the planet out of abject poverty where they are more concerned about where dinner is coming from than their environment, local or global.

dleslie2• 3 years ago

The most important innovation is behavioural: if we collectively stop travelling by ICE to a remote office, we can meaningfully and significantly reduce global emissions.

WFH isn't just a pandemic response measure, it's a climate change measure. We should all fight to WFH, even if we hate it, to reduce carbon emissions.

ChatGTP• 3 years ago

I hate the way now, we're all making it worse by leaning on"AI".

People can't even write code now without it being a carbon intensive activity, it's pretty insane...we just can't stop.

kfrzcode• 3 years ago

Turn off the feeds; don't listen to the talking heads. I'm not saying to be ill informed or under informed, but curate your information feeds such that they're challenging you to do due diligence; read journal articles that cite sources and avoid anything that has an advertisement like the bubonic plague.

Distend social media and focus on high-quality, low-throughput content. Rationality is not based in the vox of the masses.

xupybd2• 3 years ago

I strongly believe engineers will solve this not politicians.

pharmakom4• 3 years ago

Either that or game over. Totally agree that humans cannot coordinate on this scale.

Nevermark• 3 years ago

The engineers have alternatives to more than enough cases where greenhouse gasses are produced or released.

The "political" problem is how to solve the economics problem. As long as society "subsidizes" damage to the environment, by not charging the damagers, then damage will continue to be extremely lucrative and near impossible to stop.

But the incentives for Big Energy to resist change are so huge, that I don't see a timely solution without explicitly co-opting them.

I.e. solving their economic problem to solve our environmental problem.

Get every Big Energy CFO into a room and establish what kind of incentives they would need to find hard CO2 drawdown legislation a financially attractive opportunity worth pursuing with greener alternatives en masse.

New massive subsidies for Big Energy would not be a fair use of citizen's taxes. But the alternative of continuing to "subsidize" their destruction of the environment is far more costly.

And the side benefits of greater energy security and independence, international stability, etc., would be worth a great deal too.

awb2• 3 years ago

Leading by example is a great place to start.

Otherwise you have to make green choices a win/win or change people’s minds.

EVs are a good example of a win/win. Most people weren’t willing to sacrifice range or power in their vehicles. But now that the range and power is there and electricity is cheaper than gas it’s more of a win/win.

Changing minds is a lot harder.

fnimick• 3 years ago

What about not having a personal vehicle at all?

reportgunner4• 3 years ago

How does switching from no car to an EV help climate change ? Manufacturing EVs results in emissions.

Scarblac3• 3 years ago

Friends of mine work at a company called Satelligence ( https://satelligence.com/ ).

They use satellite data to check that various countries and companies keep their promises. E.g., a country receives money based on the promise that some rain forest is protected, then they are paid to check that no logging takes place there.

That's one of the few use cases for software that I believe can actually help.

lozenge2• 3 years ago

Don't have kids.

You feel like you're changing nothing because you are. It's logically impossible to have an impact as one person of billions.

driftless_zone• 3 years ago

Made this account just to say: with regards to climate change, it's tough because your impact is largely limited to voting + "negative actions" such as flying or driving less, eating less meat, etc. Voting obviously doesn't happen often, and attempting to reduce your carbon footprint is awesome but imo not exactly morale-boosting.

That said, there are other related causes you can give time and effort to that have a direct positive impact, such as volunteering in ecological restoration in your free time. Protecting native biodiversity and restoring ecosystems— which are becoming every-more-threatened due to climate change, habitat fragmentation, and invasive species— is very rewarding work, and more accessible than most people realize. No prior experience or tools needed, just time and energy. You can search for "environmental volunteering" or "ecological volunteering" for wherever you live, and decent odds there are options for you to choose from.

0xbadcafebee2• 3 years ago

I work in climate change. I changed my job in order to do so. The pace of change feels glacial (badum-bum). The same can be said of politics, and everything else that involves way too many interests fighting over a very small set of resources. You will never not feel helpless.

Greta Thunberg probably felt helpless. But she turned that feeling into anger, and that anger into action. Henry Rollins said he stays angry, because he doesn't want to accept what's wrong with the world. (I don't think he has as positive an impact as Greta, though)

You, yourself, cannot fix the world's problems. Neither can Greta or Rollins. But if you really feel like you're not doing enough, then hold yourself accountable. List the things you do every day to affect change. Just write down what you're doing. Then when your inner voice says "What the hell are you doing about it?", answer it. If your inner voice says "That's not enough", then do more. Or don't! But be at peace with your decisions.

chollida12• 3 years ago

Greta Thunberg probably felt helpless. But she turned that feeling into anger, and that anger into action.

Serious question.

What impact has she had? I haven't seen any changes from her actions. People knew about climate change before she came around. What changes did she create?

southernplaces72• 3 years ago

It's absurd That any serious climate scientists should take seriously the media pretensions around making an emotionally charged adolescent into a messianic figure, and consider that a useful thing for real climate investigation and some practical policy.

Either many people who work in climate change have some serious critical thinking problems in this field, or the core ideas of good scientific thinking have gone down the toilet for climate change.

camdenlock• 3 years ago

The feeling of helplessness you’re describing has been intentionally taught to you. It’s what keeps the religion going. “If only I could do MORE…”

CatWChainsaw2• 3 years ago

Degrowth. There is no way to square this circle. Sorry.

Lammy• 3 years ago

“Maintain humanity under 500,000,000 in perpetual balance with nature.”

offmycloud• 3 years ago

Figure out how to stop China from building a new coal-fired power plant every week.

pharmakom4• 3 years ago

Emissions per capita in China are not even that high though.

kulahan• 3 years ago

Climate change is genuinely one of the few things where grassroots movements (pun not intended) can have an outsized impact. Kill your lawn, replace it with native plants, and you can create an absolute oasis for animals that are losing more of their habitats year after year.

This can be a refuge for thousands of animals, give you tons of cool stuff to watch go on in your back yard, and it'll almost certainly save you money as the plants won't struggle to grow and thrive in your area.

bell-cot2• 3 years ago

Daydream: Chain all the politicians to rocks within a foot of sea level, so they'll actually care.

More practically, try to downsize your life and carbon footprint. Avoid the performative virtue of buying lots of "green" things. (Many goods like EV's have a huge carbon footprint to manufacture. And eco-tourism via airplane is right out.)

And maybe donate to a non-profit or two that are trying to mitigate the harm that climate change is causing to people much less fortunate than you.

PeterisP• 3 years ago

Chain all the politicians to rocks within a foot of sea level, so they'll actually care.

The policies which are currently in place are not there because of the desires of some handful of politicians but because of the desires of the masses. If you'd banish all the current politicians, their replacements still wouldn't be able to enact policies of rapid decarbonization, degrowth and an actually enforced major reduction in consumption of energy, goods and transportation, because their constituents wouldn't accept that.

pornel• 3 years ago

Keep in mind that personal carbon footprint is an invention of fossil marketers, and a lot of that is intentionally ineffective distraction.

You can't build long-distance UHVDC power lines yourself. Really big changes can only be done at the state level. If you need a new car, an EV is still better than a new gas car, but having public transport and rail network is even more efficient. But you can't create a properly functioning well-funded transport system yourself.

As an individual the best you can do is insulate your house, and if you need heating, get a heat pump. Domestic heating/cooling energy use is significant, and needs to be electrified before it can be decarbonized.

Some things like rooftop solar panels + batteries do work, but that is offloading switching costs to individuals, while the fossil industry is still getting subsidies. Grid-scale solar farms and storage are more cost effective. Wind farms are even better, but you can't build ones tall enough in your backyard.

BurningFrog3• 3 years ago

The truth is that whatever you or I do personally has no effect at all globally on this.

That's also true of hundreds of global and international problems.

The best approach is to accept that which you cannot change.

dleslie2• 3 years ago

That's really not true, and we have the largest experiment on collective behaviour in history to show this. COVID lockdowns had an _enormous_ impact on carbon emissions.

Everyone should fight to WFH, even if you hate it, because the benefit to reducing carbon emissions is known and significant.

epolanski3• 3 years ago

I really dislike those arguments. It's like why bother voting, one vote does not change much.

You can be conscious about your consumption and set great examples. Or you can decide you don't care and keep ordering stuff on amazon every day, shove meat and fish everyday in your mouth, change car every few years while flying regularly and pretend is somebody's else problem.

globular-toast• 3 years ago

Not having children is the best thing you can do.

dpedu2• 3 years ago

Despite all that I still feel like I'm changing nothing.

You're doing the right thing. Saving the planet isn't sexy. It's getting a few more years out of your old car instead of buying another. It's skipping a few generations of iPhone and making your current device last longer. It's skipping that vacation to Aruba this year. It's researching dozens of brands at your supermarket and being a patron of those with better practices, rather than those you prefer.

jenadine• 3 years ago

All I can think of is to build many nuclear power plant in a remote place, and use the energy to do carbon capture, somehow.

That's based on the assumption that the CO₂ removed from the atmosphere is worse that the produced nuclear waste.

EngManagerIsMe5• 3 years ago

I bought some forest land, and I'm restoring it to riparian habitat. It's not world changing, but if a few hundred acres can be returned to a natural state and grow large, carbon sucking trees, I feel like I'll have done a net good over my life.

This required giving up on some other goals though. I don't know that there's a lot you can do that is sacrifice free.

I've also gone to a mostly vegetarian diet -- preferring to source meat only from local farmers I've met in person. If I haven't met the farmer, I won't eat the meat. This reduces the amount of meat I eat, but still lets me seek it out. Maybe this helps, maybe it doesn't, but it's a pretty easy rule to follow that doesn't require me to be a strict vegetarian. I can have my beef stew as a treat, but also know that I'm not contributing to a massive industry of wasteful excess with every meal.

tejohnso2• 3 years ago

how an individual can feel like they’re actually doing something

That's going to depend on the individual. Some people feel just fine driving a hybrid automobile every day as their big contribution. Some people quit eating meat, quit flying, quit driving altogether, and some even protest. Of course there are many options and many different levels of guilt and helplessness that individuals deal with.

But perhaps you could address your need to feel like you're doing something. You don't have to do anything. You can give yourself some slack. This isn't a problem that you caused, and it's not a problem you're going to solve.

What do you do when a loved one is in the later stages of terminal cancer? Do you fret and feel like you need to do something? Do you yell at the doctors to try one last thing? Do you cry over loss? Maybe but eventually in a healthy person that will all end. Once someone is in hospice, it's time to work toward acceptance and appreciation and to try to enjoy the last bit of time left as much as one can. We're in a sort of planetary hospice situation right now.

epolanski3• 3 years ago

Consume less, buy less material stuff, eat less meat/fish, have less than 3 children, set a good example without becoming annoying to family and peers.

Don't over stress it though. You can't change the world but you can set great seeds with examples.

ryandrake• 3 years ago

Every time there's an article about climate change, it's always about how we're "close to the point of no return." It's felt like the Truck Almost Hitting The Pole GIF[1] for like 10 years now. Has anything actually gone past the point of no return?

I'll almost be relieved when we're officially inevitably fucked... at least these "nearly there!" articles won't keep popping up.

1: https://tenor.com/view/truck-crash-test-pole-doesnt-reach-gi...

netrus• 3 years ago

A lot of this can be explained by our moving of the goalpost towards still attainable goals. At the moment it's the 1.5C goal, that is becoming more and more unrealistic. But of course we will aim for 2C after that, because its still better than 2.5C, etc. This communication strategy backfires to some degree, but it is not inconsistent.

This article talks about 7m of sea level rise over the next couple hundreds of years. That's pretty bad, but its easy to imagine something even worse.

la_fayette• 3 years ago

Funny GIF :)

libraryatnight• 3 years ago

I imagine to the people watching and warning it's a lot more visible and obvious. I also think there's varying degrees of fucked, so we're already fucked, but we can be more fucked so even as things indeed get fucked we still read articles about how there's still fucking on the docket.

I think a lot about this article from Harpers in 2015: https://harpers.org/archive/2015/04/rotten-ice/

In it there are scientists that more or less say we were in mitigation phase then, not prevention.

pharmakom4• 3 years ago

I’m sure we will feel that way in 50 years time :)

vlunkr• 3 years ago

Applies to the Doomsday Clock as well.

https://en.wikipedia.org/wiki/Doomsday_Clock

Someone ought to make a parody clock at this point.

danjoredd• 3 years ago

The me getting a GF clock will reach midnight sooner than that thing

STM32F030R83• 3 years ago

Oh that’s a funny read. Somehow 2023 is the closest we’ve ever been to global catastrophe? I’m not saying it’s out of the question this year but those jokers really think now is worse than at any point in the cold war? Really? Well you know what they say about broken clocks…

nostrademons4• 3 years ago

We already are officially inevitably fucked. If you corner a climate scientist in private and point out the real implications of their work, they might even admit it.

The problem is you can't admit that we're officially inevitably fucked in public. If you did that, funding for climate science and climate mitigation would dry up, because there's nothing we can realistically do about it. Trust in governments would evaporate - the purpose of a government is to keep us all safe, but if we're all fucked anyway, it'll quickly become every man for themselves. Currency would lose its value, because it assumes that there will be a future better than the present where you might want to buy things. So everybody has an incentive to parrot the "Things are looking bad, we have a serious problem, but if we all band together and lower our emissions we can solve it!" line.

earthscienceman2• 3 years ago

I am a climate scientist that studies Greenland, can confirm: we're (not-even-inevitably but currently) fucked.

Timon32• 3 years ago

It's not quite this binary. Yes, we're fucked. But the less we do, the worse we're fucked. It's better to have a glimmer of hope and use that to unfuck what you can.

phpisthebest4• 3 years ago

> Trust in governments would evaporate

I am unclear why anyone ever trusted government or believed government would be the avenue for resolution of this problem

You either understand history, or you trust government, you can not both understand history and trust government..

The second people put their trust in government was the second humanity was fucked. In the best of time Government is like fire, is a troublesome servant and a terrible master.

the purpose of a government is to keep us all safe

When has that ever been the case... The purpose for government is to provide a framework for non-violent dispute resolution, and to safe guard natural rights and property), and maybe form a national defense force. Not to provide individual safety and security.

>Currency would lose its value, because it assumes that there will be a future better than the present where you might want to buy things.

No fiat currency actually needs the future to look worse than today to encourage spending today and discourage saving for tomorrow. This is why fiat currency required inflation, and why deflation is feared above all else with fiat currency. You have to have spending today, you have to have people spending in multiples of what they really have in currency (i.e debt spending) and you have to have that in perpetuity.

In short, Fiat Currency is a legal pozi scheme that is destined to fail at some point anyway....

nickpp• 3 years ago

there's nothing we can realistically do about it

There is something we can do about it: we can keep improving, evolving, getting better. The solution will only be found in the future, with tools maybe outside of our grasp today.

Nothing is inevitable, until it happened. Till then, you and every other pessimist cand still be proven wrong. My money is on the creativity and ingenuity of the race that started in the trees, went to the moon and is currently birthing an even greater intelligence.

akira2501• 3 years ago

We already are officially inevitably fucked.

Well.. the second law of the thermodynamics guarantees that.

The problem is you can't admit that we're officially inevitably fucked in public.

I see several people attempting to start a career off of just that, some of them are quite successful, even. It helps if you add a lot of theocratic and pseudo-religious ideology into your message. People need _something_ to latch on to after all.

because there's nothing we can realistically do about it.

We are a dynamic species. My proposition is we are currently living through a sort of "modern dark ages." Government imposition and corporate monopolization are at all time highs, to the extent that most new wealth is captured and not used to create new technologies and to progress the species. This is an artificial situation and it is not sustainable.

If you let this cloud your judgement of what is possible you may arrive at this position and feel it is logical. I suggest to you that it is actually a form of insanity or odd religious fervor to actually believe this.

Perhaps, in afterthought, more generously it's a desire to not lose any current level of comfort that you enjoy while "realistically" being able to solve the problem. A solution to this problem will obviously require drastic and hopefully generally positive change, something we've been known to do sporadically many times before.

wing-_-nuts2• 3 years ago

That's because you're reading about different 'points of no return'. Originally, we were trying to keep the world as we knew it. There was a big push for 'absolutely no more than 350 ppm!'. That came and went. Then it was '1.5c', or a world that looks vaguely as healthy as what we have now, but every scientist who's actually done the research knows this is a pipe dream'. Year by year, we're slowly dooming ourselves to a worse and worse fate. It's still worthwhile to act, because things can always get worse. What happens when Pakistan and India are nuclear armed nations each others throats over water rights to the Indus river?

Nobody says 'game over' because that's not helpful. It can always get worse, and hope and action is the only way it ever gets better.

andrewstuart2• 3 years ago

Have you missed the events of the past few years?

The droughts, the floods, the fires?

STM32F030R83• 3 years ago

Not trying to be snarky but… those happen literally every year.

EngManagerIsMe5• 3 years ago

Species extinction is very real, and ongoing. There's little more irreversible than a whole species ceasing to exist.

phpisthebest4• 3 years ago

Global Warming will be here Two days before the day after tomorrow... We didn't listen.... We Didn't listen......

munificent2• 3 years ago

The way to visualize this is that the truck is instead a hundred-mile long train whose engine is in the back and we are all on it in different cars.

The front of the train has already hit the pole. Cars nearest the front are already crumpling, killing thousands and leading millions to migrate farther back into the train.

Meanwhile, those of us fortunate enough to be in cars farther down the line are starting to get cynical about doomsaying because when we look around us, all of our cars seem mostly fine. Sure, maybe we hear a little rattling (food prices, heat waves, more hurricanes every year), but that's just random chance, right?

And, sure, maybe it seems like more and more people keep showing up from cars closer to the front with the luggage and settling into our cars, which are—if we're totally honest—starting to get a little crowded.

But the train is fine, right? We look out the window and the scenery is still trundling by just fine so there's no reason to stop the engine, right?

southernplaces72• 3 years ago

The front of the train has already hit the pole. Cars nearest the front are already crumpling, killing thousands and leading millions to migrate farther back into the train.

Bearing in mind that extreme weather events have been killing people in large numbers since there have been people to kill in the world, please name at least one specific event or group of weather events that have unambiguously killed thousands of people as a result of man-made climate change. I'm honestly curious about what they might be, because I've seen many (in my mind partially dishonest) narratives in which a hurricane occurs, as hurricanes have occurred since the length of human civilization, and it's called a man-made climate change even despite a lack of concrete distinction.

vintermann• 3 years ago

Has anything actually gone past the point of no return?

We won't know when we pass points of no return until well after we're past them (and even then, living in denial may be an understandable option). To know if the brakes will work, you have to actually step on the brake first.

But we have lost a lot of biodiversity as a result of global warming, yes. Things like palsa bogs which won't come back for a long time even if climate returns to preindustrial tomorrow.

wolpoli• 3 years ago

The headline is talking about a point of no return for a specific threshold or feedback loop, and there seem to be no end of those, for decades to come. As for the "we're fucked" point of no return, we'll still need to first precisely define it.

smitty1e• 3 years ago

I watched that truck for minutes and it never hit the pole. Who was driving? Godot, or Zeno?

fy20• 3 years ago

15 to 20 years ago the world was on the brink of collapse due to peak oil. And well that didn't happen..... I'm not trying to dismiss the climate change issue, but remember the media loves sensationalist articles, as that's what sells views. And what's more sensational than selling the story that we are on the brink of extinction?

Case in point, if you've watched the news over the past week you'd expect Paris to be a warzone with protests everywhere and the city burning to the ground. A freind visited last week, going to all the usual tourist places, and said they didn't see a single protest or building burning. There was uncollected trash though - in neat piles next to the bins.

revelio• 3 years ago

"If it bleeds it leads". 20 years ago the world was being told that by now there'd be no ice in the Arctic at all. Yet, here we are. Last year was the highest level of ice for the last 12 years and ice levels are stable for the last decade:

https://dailysceptic.org/wp-content/uploads/2022/12/image-35...

Also, the trend on graph only looks alarming because it's been truncated and covers a relatively short period of time. Go back to old IPCC reports and the graphs show levels were much lower than today and then grew rapidly at the start of the 70s.

https://www.youtube.com/watch?v=W3qST_g7z8Y

horsh1• 3 years ago

How long until Greenland is green again?

gshubert17• 3 years ago

The mass of the Greenland ice sheet is about 2.5 E15 tonnes. The average melt rate between 2003 and 2016 was about 2.5 E11 tonnes/year. At this rate it would take 10,000 years to melt completely.

But the melt rate is increasing with increasing average temperatures. Wikipedia quotes a melt of 5 E 11 tonnes in 2019. Perhaps the doubling time is about 10 years? At that rate it'd take about 5,000 years to melt away.

Five thousand years is a long time only if the melt rate remains the same. If the melt rate continues to double every decade, then 12 doublings increases the melt rate to 4000 * 5 E 11 = 2 E 15 tonnes/year. Then the Greenland ice cap could be gone in about 120 years.

Someone• 3 years ago

But the melt rate is increasing with increasing average temperatures. Wikipedia quotes a melt of 5 E 11 tonnes in 2019. Perhaps the doubling time is about 10 years? At that rate it'd take about 5,000 years to melt away.

At that doubled rate it would take 5,000 years, but if that rate doubles every 10 years, at the rate 10 years from now, it would take 2,500, at the rate 20 years from now 1,250, at the rate 100 years from now about 5.

adrianN5• 3 years ago

I don't think a simple exponential function is an adequate way of modelling this.

lofaszvanitt• 3 years ago

There are a lot of reporting going on about taking ice samples from these areas. What do those ice samples say about the last few thousands of years. How temperature fluctuated, can they estimate the ice sheet coverage for the last x thousand years and if so, what does it say? What if it melts, can it ever freeze again, creating the same block of ice as before?

itronitron• 3 years ago

I am always confused as to why they don't include a graphic that shows how a melting glacier or ice shelf translates into worldwide ocean level rise. The common intuition is that Earth's oceans are vast so any amount of above sea level mass going into them isn't going to change sea level that much.

I haven't yet seen a graphic yet that explains the calculation, and I'm left cynically thinking that they are mistakenly using a Mercator projection when calculating the contribution for Greenland.

https://en.wikipedia.org/wiki/Mercator_projection#/media/Fil...

vaseko• 3 years ago

Soros is saying [1] if not solved withing ten years, it will cost exponentially more to restore the balance. Bellow in [1] there is a video proposing a device to recreate the albedo effect using see water. For Soros climate change is the biggest security thread, only after this he talks about wars and geopolitics.

[1] https://www.georgesoros.com/2023/02/16/remarks-delivered-at-...

padjo2• 3 years ago

I mean whatever about the physical reality, politically the ice sheet is guaranteed to melt. There is essentially zero chance of humans coordinating a global response to climate change that achieves anything until things get much much worse

oezi• 3 years ago

Humans have already achieved that many countries stopped growing their emissions unchecked and are trying to reverse the trend.

By means of initial subsidies renewables are now producing cheaper energy than fossil sources. This causes the normal market forces to act (economies of scale, tipping points, etc.) which make it very likely that renewables will be the predominant energy source of the 21st century.

padjo2• 3 years ago

Global emissions are still going up.

anonyfox• 3 years ago

And still here we are, and no one yet has found an effective argument that convinces people that: yes, this climate catastrophe is real, on track to happen, and within our lifetime.

We, as humanity, know what causes it, why it happens, what can be done to stop it, and even a few things to revert parts of it. The knowledge is there. Scientists proved things. Engineers built stuff.

The literally only thing is that we are currently unable to stop this madness because of a lack of… motivation to do so.

There are numerous reasonings why this is the case, from inequality to geopolitics over profitmaximization up to straight out lying and denial. Many indeed have a point somewhere. It’s just that it doesn’t matter if they have a point - the global problem must be stopped, now.

Maybe… while many of us here on HN are busy prompt engineering AIs… could we use that momentum to craft arguments for every single person not willing to act for humanity?

ako• 3 years ago

Unfortunately, the only proof I see is that you’re expecting too much from humans. We’re just not very rational, and have a problem doing the right thing. We believe in unproven stories about gods, kill millions of people for temporary greed, power or believing the wrong lies, and we lie and deceive to gain power or wealth, and have a hard time sharing with those in need (actually sending fugitives back to sea knowing they’ll drown). We’ve pretty much destroyed all life on earth, and are close to destroying our ability to survive. Sometimes people surprise you in a positive way, but overall it’s pretty sad. Maybe it’s unavoidable, as these are the ‘qualities’ that made humans successful, but it seems they’ll now destroy a large part of us (not for the first time, but at an unprecedented scale).

slibhb• 3 years ago

It seems that, shockingly, "people are an evil, ravenous cancer hellbent on destroying their planet" isn't a story that the masses find compelling.

onion2k• 3 years ago

And still here we are, and no one yet has found an effective argument that convinces people that: yes, this climate catastrophe is real, on track to happen, and within our lifetime.

Everyone who 'doesn't believe in' climate change has a vested interest in maintaining the status quo - they profit from fossil fuels or from misinformation, or they're narsessistically enjoying other people's discomfort from their arguments, or they're just stupid. There is no point trying to convince them. We have to fix the problems without their help.

climate_meme3• 3 years ago

But, where is the catastrophe though? There has been prediction after prediction of catastrophe and none have come to pass.

https://cei.org/blog/wrong-again-50-years-of-failed-eco-poca...

andrewstuart2• 3 years ago

The truth is the human race can do nothing about the pending environmental disaster.

Nothing has worked on a scale large enough to make any difference.

Greed and nationalism and small mindedness and selfishness and war prevent humanity from addressing its fate.

It's going to be nasty future for those who survive and this period will simply be the time in history in which humanity knew and did nothing.

climate_meme3• 3 years ago

This is a tired, played out meme which is only relevant in that it strokes the ego of those who repeat it.

runesofdoom• 3 years ago

From, Yes, Minister,

"Stage 1: We say nothing is going to happen.

Stage 2: We say something may be about to happen, but we should do nothing about it.

Stage 3: We say maybe we should do something about it, but there's nothing we can do.

Stage 4: We say maybe there was something, but it's too late now."

robocat2• 3 years ago

https://youtube.com/watch?v=nSXIetP5iak

the_third_wave• 3 years ago

These reports are the modern versions of the men walking around the city with sandwich boards proclaiming the end of the world [1]. When you asked them what it was which made them believe so you'd get some rambling story of how the lord had given them signs in their breakfast porridge, ask these climate prophets what makes them believe the point of no return has come and they point at their models which have shown them the end is coming. The difference between these two is that the former at least got a good breakfast out of their medium.

Is the climate not changing then? Of course it is, always has and always will. Do humans not influence the climate then? Of course they do, especially since the industrial revolution. Does this portend a catastrophe? Well... there opinions vary. I'm convinced the changing climate will poise some problems which will be dealt with - just like humans have always dealt with the changing climate. The difference here is that there are more humans - which could make things more difficult - who have more advanced technology - which will make things easier. Assuming cooler minds prevail and the sabre rattling around the world does not lead to a bigger conflict I'm convinced humanity as a whole will make it through whatever changes the climate makes to come out richer and more advanced still.

Would we be better off if we were not as reliant on fossil energy sources? Yes, we certainly would given the pollution - and I'm talking about true pollution here, not CO₂ - involved in the winning and use of these sources. Build more nukes, get serious with fusion, develop a sane form of hydrogen storage, go for it. Not because of the climate boogeyman but because of the above reason as well as the fact that these energy sources are concentrated in some of the more troublesome regions in the world where they have already led to numerous conflicts.

Do I trust climate models? No, I do not and with reason. I did study this stuff a few decades ago when the models were 'less advanced' than they are now. I know of too many fudge factors in these models, too many adjustments which are made to make them follow the observations where the reason for and effect of those adjustments are not understood. From what I have been able to keep up with things are not much different now - apart from far faster computers and more complex models with more parameters and their accompanying fudge factors.

[1] https://therionorteline.files.wordpress.com/2018/07/lead64.j...

maximinus_thrax• 3 years ago

Real talk, anyone interested in jump-starting some sort of fund to buy real estate in Greenland? We need to jump at the opportunity! /s

el_don_almighty• 3 years ago

Every sunset sees the point of no return

Every time you lay down on your pillow,

your eyes close on a world to which you can never return

Thus it has always been and always shall be

Forestessential• 3 years ago

most recent global warming threat

meghan_rain• 3 years ago

Generative AI will tell us how to fix it, I wouldn't worry.

fwungy• 3 years ago

The government can change the weather if they're allowed to collect more taxes and given more power.

climate_meme3• 3 years ago

Obviously we need communism to fix the weather. Give up your car, your meat, your vacations, limit your indoor heating and for Christ sake, don't have kids (not that you Gen-Zs had that option anyways ..).

Scientists (TM) and the private plane travelling climate circus are sure that this will cause the temperature in the year 2100 to be reduced by a whole one hundredth of a degree.

Greenland ice sheet is close to a melting point of no return

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