How long before all the ice melts? - BBC World Service
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- čas přidán 17. 01. 2023
- We know the Earth's atmosphere is warming and it's thanks to us and our taste for fossil fuels. But how quickly is this melting the ice sheets, ice caps, and glaciers that remain on our planet? That's what listener David wants to know.
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With the help of a team of climate scientists in Greenland, Marnie Chesterton goes to find the answer, in an icy landscape that's ground zero in the story of thawing. She discovers how Greenland’s ice sheet is sliding faster off land, and sees that the tiniest of creatures are darkening the ice surface and accelerating its melt.
CrowdScience explores what we're in store for when it comes to melting ice. In the lead-up to yet another UN climate conference, we unpack what is contributing to sea level rise - from ice sheets in Greenland and Antarctica, to melting mountain glaciers and warming oceans. There's a lot of ice at the poles. The question is: how much of it will still be there in the future?
Research Professor and climate scientist Jason Box from the Geological Survey of Denmark and Greenland shows us how much ice Greenland we've already committed ourselves to losing, even if we stopped burning all fossil fuels today. His team, including Jakob Jakobsen, show us how these scientists collect all this data that helps feed climate models and helps us all to understand how quickly the seas might rise.
Professor Martyn Trantor from Aarhus University helps us understand why a darkening Greenland ice sheet would only add to the problem of melting. And climate scientist Ruth Mottram from the Danish Meteorological Institute breaks down how the ice is breaking down in Antarctica and other glaciers around the world.
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Did your cameras stop working? Why not have footage of the topic?
whats with the stupid designs? give us some film.
I believe that although there are visuals for this post the poster is BBC WORLD SERVICE which is a radio channel. I watched the vid titled "is it too late to save the Greenland Ice Sheet" which is the visuals to this.
Why (on Earth!) can't BBC afford to send a camera man? Or did they send one? Is there some legal reason for there being 90% of audio with no visuals?
BBC World is a RADIO broadcast worldwide.
Does it make the information any staggering?
Something to do with a wish not to produce more CO2 with extra luggage/persons not needed for the production. it's good of them to do that.
I like how the people reporting on the melting ice flying a helicopter adding to the melting.
I notice that the ice looks dirty which absorbs more heat from sunlight and further increases the melt.
Because as it melts the few particles of dust at each new level accumulates more and more at the top. Yes this heats faster and creates a positive feedback loop. 😕
when i saw that ice, ..it looked "water laden" to me, ..
very wet, loaded with water, slush maybe depending on the temp.
This is usually caused from the ash from forest fires. Ash travels far and wide and can land on ice which in turns heats up the ice because the sun does not deflect. In turn causes the ice to melt faster.
Nothing is melting. End of sea ice predicted constantly for the past 50 years.
Then add in the methane deposits 😂😂 w re fkd
Why are we subjected to that odd looking art?
You must be living a life of plenty if this is your only sorrow.
@@thiemokellner1893 RIP to your bitter ass
🤣🤣🤣
Budget cuts
Brainwashing
Really wish we could have got video of all the beautiful sounding glaciers you are describing lol.
Whats more alarming than the melting ice is that Britan seemingly doesnt have cameras in their iphones. Only audio on a youtube video? This is tragic.
Why is the video a wavy stream of orange and blue blanks - where is the actual video feed?
This took place years ago, the 80’s I believe. The Isaac walten league had a local man present his chart’s for a local lake of ice in and ice out on the areas biggest lake. He got back to early 1900’s up to present then, it was completely obvious that things are definitely warming! His chart’s laid it out perfectly!
The BBC World service is a radio programme and all they have done is spliced in a few bits of video to make it more interesting. Many of the videos on you tube would be better if we didn't have to look at them.
Thanks for your reporting on this issue. The production quality is not worthy of BBC. The information is good. So, thanks for that. But this may as well have been produced as a written document.
agree, what's the point of making a video if it's to mainly show a graphic?
@@radjalomas8854 Because it isn't a video. It's from the BBC world service, which is a radio broadcaster. This is taken from one of their radio programmes.
If the answer was in the very near future, would it make for a typical cozy announcement on a mainstream media platform?
I have been living near the salt water for 40 years and I can't see a single inch of sea level rise along my foreshore . The tide levels look the same to me .
Data supports that. Tide charts haven't accelerated for all cities. No change in the rate of sea level change over the last 100 years.
More scam propaganda, no sea level rise acceleration, and no g. warming in the last 5+ years. 🙄
May I ask which sea your near?
People are mostly water so the 4 billion or so people that have been born in 40 years have used up the water that would have risen the sea level. Does that make sense?
@@LulaJake Makes as much sense as saying all the ice is going to melt when 100 meters of snow fell since 1942 when planes had to land in Greenland, that's where they are now, under 100 meters of snow. Look up Glacier Girl.
28 trips to the Artic, no doubt he's planted a lot of trees to offset his carbon footprint?
My question is, how much weight is there in ice, and how much will the land rise once all the Greenland Ice has melted?
Are there any concerns about trapped organisms being released and causing us potential harm?
Thank you for uploading and sharing.
Some carbon emissions are worthwhile.
Ice weight loss does have an effect on volcanic activity but it's not the biggest concern.
There are concerns about trapped diseases (and some very old organisms have been reanimated) but the risk is mostly considered very low (they'd probably be very vulnerable to antibiotics if they even got going at all -those reanimations happened in lab conditions).
Oh, so you think sea level rise won't harm us? JFC! Wake up cuz. Every major city on a coastline will be permanently flooded within the next 50 years. 200+ nuclear power stations are on tidal waterways. Imagine Fukushima x 200 and without any way to clean it up or hold back the radioactive material. So probably Fukushima X god knows what. No life on the planet would get away from that. And that will happen just with the loss of Antarctica's Thwaites glacier. As far as disease is concerned probably the worst thing that can come out of the frozen ground is Anthrax. However, the Greenland ice shelf does not have any dead animals inside it. Except maybe at its grounded point. But if the melt gets down to there a disease will be the last thing on our minds as we try to evolve gills in water-world.
Like what’s happening with the permafrost, you mean?
@@fabiengerard8142 Yes
In
I must say, I am loving your graphic. I thought it was a chart showing water running over glaciers and melting the ice, but, I realize the glaciers in this animation are actually melting way way slower than the glaciers!
I thought the graphic ''got in the way''
I mean the commentary talks of ''wonderful views'' but you dont see them because of the graphic!
Glacial and sea ice is melting at the rate of 2,000,000,000 tons/day. And ice absorbs 80 times as much heat as water.
Is this a video or a podcast ?
Yes
You guys messed up. I don't understand why you start showing video footage and then cut it off with the wavy graphic.
What media like the BBC should be explaining is what was the last ice age , when did it start , what caused it (even that is still being debated ) what was its extremes and how long it has been melting to get an idea of the whole process .
No. This is not just climate change. This is a man made global warming crisis. There hasn’t been a time where warming has happened this quickly. Nor has there been a time when co2 has risen this quickly. Ever.
We are currently recovering from a miniature ice age caused by volcanic eruption.
You're confusing glacial periods (ice ages) and interglacial periods (like the climate of the dinosaurs) which last 10's to 100's of millions of years, with glacial maximums and glacial minimums that last 10's to 100's of thousands of years.
The last glacial period began 55+mya and the earth is currently still in the middle of that glacial period.
We are at the end of a glacial minimum that began 12+tya and should be slowly cooling as we head towards the next glacial maximum, instead of rapidly warming
Search: Melankovich Cycles.
Enjoy.
Martyn Tranten’s comment, “we shouldn’t play God”, resonated. However, the bulk of the planets million and billionaires don’t share this view, obviously, and that’s why we are racing to extinction. 😢
I am horrified of all those ideas of geoengineering as if we do not already (unintentionally) and fail miserably.
@@thiemokellner1893 Bill only wants to SRM you so the AGW doesn’t get you. it’s entirely for your own good & he wants you to know that the rumours of him & his father being raging fans of eugenics are just vicious rumours. $CIENCE!™️ BELIEVE !
@@dr5290 those so called ‘elites’ would have you thinking that overpopulation is the issue, when it’s really just the equitable distribution of resources that needs sorting out.
@@lw1zfog 10% of the world's population is producing 50% of the world's greenhouse gas excess, and similar proportions of other pollutants. We have a means to halve humanity's impact on our ecosystem right there.
Apparently it was by the year 2000, and every 2 years since
transphobe
@@lw1zfogclimate cultist lol
I know that the ice wall is decently a problem while it's melting especially when they don't know exactly where the water is going to especially when they are thinking the sea level will rise hugely
With the accelerated warming and melting I don't see it taking millennia to melt. What really worries me is that the glaciers will break lose and slide off into the ocean en mass. If that happens, not only will it immediately raise sea levels dramatically but it will create a tsunami like we have never seen in our lifetimes. I hope you are right and we do have hundreds/thousands of years. I just don't see it from the studies I have seen.
I hope you don’t rely on the BBC for your views on global warming.
@@ianrowley5762 And what scientific evidence do you rely on?
The IPCC concluded we are already in “abrupt climate change”. In other words, irreversible extinction.
@@jasonbrambach6957 I don't believe it is irreversible yet, but it is approaching fast. I believe we do have the technology, the tools to reverse it still, but I believe we lack the will to try. If it happens in the most catastrophic way imaginable mankind could be knocked back to the stone age, but I think some will survive. We are a tenacious virus. The planet getting a little fever won't be enough to be rid of us.
Same
Wish there was video with this, especially with the purple algea...
Thanks for the report.
One problem I have never seen mentioned is that there is no need to melt the ice to rise the sea level, it suffices that glaciers calve into the ocean. It will do the job just fine. The melting can take than whenever it does. Am I mistaken?
How "good" are the chances that a huge amount of ice gets calved into the sea, let's say 1/7th of the Greenland ice shield, in "on go" just because there is enough ice molten to make parts of the shield swim enough to glide enough for the slope it is on?
I did a model I put sand in bucket and water around it. Than I added ice that raised the water level. When the ice melt the water volume leval stayed the same. So to say the sea will rise is a lie.
@@Nathan-ry3yu Your model is incomplete. If adding the ice made raise the level of your water, it is a model for the ice swimming in the Arctic sea. You might add a mighty block of ice on top of your sand on a stone that does not touch the water. Mighty only to see the melting effect on the water level more easily. The adaptation reflects the glacier ice in high mountain, the ice on Greenland and on the Antarctic continent.
Or if you want it simpler, place a cube of ice in a glas that gets smaller to its base, e.g. coca-cola, such that it does not touch the ground the cube has to be big enough. After the ice has molten, you can tell us whether the level of water in the glas has risen.
@@Nathan-ry3yu are you trying to make a joke or ... first, how old are you? Change your experiment. Place a brick in the bucket. Then fill the bucket below the top of the brick. Now put a block of ice on top of the brick. I think you will be able to figure it out without waiting for the ice to melt.
The calving only occurs when there is sufficient ice for the whole length of the glacier to have flowed to the sea. So the total ice captured in the glacier has not changed.
@@thiemokellner1893 Not enough land coverage in ice to make a significant impact on sea levels to back up that theory of yours. Antarctica isn't as large as scientists had thought. It's actually made up of hundreds of islands. With majority off the surrounding sea covered in ice. That makes up majority of its ice coverage. New data shows Antarctica if it melts only about 2% sea leval may rise but no evidence to state it will happen either based on new discoveries of sea water leaking between our tectonic plates in the sea and getting trapped in rocks deep within our interior planet. Theirs studies that earth interior has 3 times the water trapped in rocks in our planet interior that what sits on the surface.
The snow and ice on the Greenland Ice sheet has been melting forever that is why it is not reaching the sky. This show is scaremongering for the oceans to rise a meter water would have to be stored on all the land mass to the height of two meters, this is due to the land covering about half the area of the oceans. Imagine Australia would have to hold two meters of water over its entire area, this would need to be repeated on all the continents for the sea to rise a meter.
From NASA…”The question: Melt ice cubes in a glass of water, and the water level will not change. Can the same be said for ice floating in the ocean?
The answer: There is a common misconception that sea level change comes only from ice attached to land, and not from floating sea ice. Although that is mostly true, it turns out that there is an effect, even if it is minor.
An often-overlooked ingredient makes a significant difference: saltiness. Various studies show that because floating ice is made of fresh water, it actually increases sea level slightly when it melts into the salty sea - unlike what happens in your water glass.
A floating object, like an iceberg or other sea ice, displaces its own weight in water. But fresh water is less dense than salt water. So, when floating ice melts and becomes liquid, it takes up more volume than the seawater it displaced when it was ice, raising sea level. This has about 3% the effect of grounded ice-melt and raises sea level.”
Sea level is rising at about 3.6 mm per year so it really is nothing to be worried about but we should prepare for it and reduce our CO2 emissions. However it is the worlds biggest economies who continue to do little in this respect making all the efforts of the a small few nations like the UK futile while making life unnecessarily harder for those citizens.
For anyone that cares, the union of concerned scientists is a good source for climate science related facts.
Facts is a strong word. You should call them what they are, climate related prophecies. Made by snake oil prophets who only get money from the government if they report there is a crisis.
Love your work. Pardon please but does the plethora of internal combustion engine contribute to the melting factor ?
Not just automobile but all of it. Lawn equipment,trains, construction equipment, aircraft,boats and shopping ?
Can a person effectively make a difference beyond give up the personal ride ?
yes global warming is just ONE of the many environmental issues we face- always look at the big picture!
You should do a study on ice ages and their cycles. That would be interesting.
It might open up their thinking a bit. But I doubt it.
probably more truth in that then climate change
@@anthonydoyle7370 AAAHAHAHAHAHHA I think the world's climate scientists from many different countries with post doc degrees already know plenty about ice ages , dummy.
Do you scientists like Jason don’t do that?
That historical work has been done. Polar ice Cores have been taken and the data recorded. The science is way ahead of you and has been available for decades FYI.
Thanks for posting.
Not liking the background constantly flowing past. Show the actual pictures of the trip! Thanks!
I would criticize the absence of visuals that are bring directly and specifically referenced in the podcast. Show the chart where it references it.
"Flow of hot rocks rising from the Earth's core beneath central Greenland is melting the ice from below and contributing to sea-level rise, study finds"
In Antartica and southern Chile and Argentina tours are Still being advertised, what can we do to stop them?
Well considering it's night for about 6 months in the artic circle... The answer is never., But keep trolling us.
This is great and informative program, but what has happened with video?
Also what about the South Atlanic Gyre of freshwater melt. Not mentioned and impact on AMOC.
Perhaps BBC world service is not the BBC. And if they showed the video portion they would get a copyright strike. I cant see why else they would bother to put a audio recording on You tube.
How long before all the ice melts?
Ans: We don't live to get a chance to see it.
Time to watch the movie Waterworld once again.
It's a video of a radio program, unusual nowadays.
Why take camera's to record the helicopter landing on the ice and then turn them off after 5 seconds?
*A picture paints a thousand words, moving pictures even more so.*
14,000 years ago the ic sheet was 2 miles deep covering north american
Let melt ,.
Could you show a Map of greenland without the ice???
Thx . Greetings from Brussels 🙂🇪🇺
If BBC says so then it must be true, they never lie. 🤣
Exactly. It's not like they're globalist-controlled propaganda or anything.
Where is the picture???? Wtf?!
I'd like to drop a go-pro camera down that ice river.
Anyone notice that most scientists say it will be 1000 years. Eco anxiety destroys young peoples lives. Still looking for that sea with a slope. Want to go water skiing.
Greenland should worry us but arctic Sea Ice looks likely to be the first unignorable ice event when it first runs out in the mid-2030s. (which will massively impact Greenland)
Antartica's Thwaites Glacier will probably be the first big SLR event. It's known as the doomsday glacier.
@@bluegold21I'm pro melting so see same stats you do but glumly.
2223 at +8.5C which tbf would have been a lot
Well past the era Star Trek is set in before Greenland melts at 4C... +2 think ice free Y3K 🥳
@@DrSmooth2000 If Thwaites collapses that is a 7m rise defo before the end of the century. And highly likely at least 6 feet before mid-century. 2m is a massive game changer and will exacerbate the melting of all other ice stores. Greenland, as it shrinks, will increase it's rate of melting due to the physics. Smaller objects have more surface area to mass plus the lowering of the glacier's altitude will obviously bring it into warmer air. Add the increase in global temps heating the oceans and I can not see how we can avoid 14 to 20 meters SLR by the end of the century without beginning to scrub the atmosphere of CO2 now. That is a calamity for civilisation and the ELE we should avoid. I fear for large ocean-bound mammals. We may lose the likes of Whales forever. It's all looking pretty grim.
So, a fellow told me on the net that it takes 343 joules (BTUs) of heat to melt just one GRAM of ice. So, if Greenland is losing 250-280 GT (1 Km X 1Km X 7m)/yr., well, you do the math. My 'puter exploded and then melted into a steaming pile of bubbling plastic when I tried to do it! We burned 8,000,000,000 TONS of coal in 2021, and we mindlessly and so often needlessly burn 100,000,000 BARRELS of oil DAILY, driving 23 ZJ into the oceans every year. Remember, you do the math, my 'puter is toast. We are accelerating our drive to extinction much, much faster than any of the MSM (yes, even my dear BBC) has told us, otherwise we'd be eliminating ALL unnecessary travel by any fossil fuel burning conveyance, and using CONTRACEPTION to prevent the horror that awaits the next generation and after, if there is an "after".
Damming up a glacier could stop it retreating, couldnt it or could it?
I'm just wondering why that fresh water isn't being used for something yet by someone
The water may be free but the shipping will kill you. Think about it.
They have a hydro electric generator for the south end of Greenland.
Notwithstanding the fact that we have no idea what microbiomes, or whatever, may being released and may carry what potential diseases...
@@solarwind907 It won't take much time when fresh water will be more expensive than gold. Spain, e.g., is craving already for fresh water and it is not even summer yet.
i saw the ice in this video like a rainbow, the color is yellow and green, this is audio
Could they make White inflatable pillows to anchor over the algae blooms to kill them off and keep the ice from melting so fast?
How much CO2 would we need to emit to produce and install those pillows? What do we do with those innumerable pillows once we do not need them anymore? Let them float the oceans to create the next disaster? We are not even capable of handling our day-to-day waste properly.
Ice melting is a good thing......these people are lying to you.
So long as it's floating ice it doesn't matter at all to first country nations. Greenland, however is very important to Northern Nations.
Get two classes and a ruler. Fill one with ice water and the other with rock and water and ice on top of the rock. Measure the difference. The ice water doesn’t change. The rock and water rises in level.
Ice has been melting for about 18,000 years.
Antarctica is getting colder
Ice melted during the Medieval Warm Period, then advanced during the Little Ice Age. People did not have gasoline cars back then.
Someone in government, said, hey let’s tax the Weather, and here we are
The ice is not going to melt!
Why is the video part of this blocked??????
It's propoganda.....who cares
would be nice to see what's going on. a lot of audible not a lots of video
The main problem is that they look at research data in isolation, but Earth is a closed system so everything is interconnected.
This means that the rate of change won't be linear but rather exponential.
bingo!
Current Doubling Rates suggest a much faster rise in sea level during the 2100s...but that should be avoidable I guess. But if not, then all ice melted by 2200's is my guess.
Thanks for the subject from France... I share...
wonder what they would say now after the hottest summer
and Antarctica sea ice is broken
Poor editing. You rely on that wavey graphic too much. I have lost interest in your little Story time blurb, about what, again?
Why without video?
Don't tell me, it's summertime
Look at the dark dust on the ice.
Thats the reason why ice melts much faster when the sun shines on it.
It is minus 80 degrees in places on this planet and that will never melt.
BBC needs to look at what's going on in this upload. Most of it is a voice with a flowing blue and yellow graphic design. Take it down. Fix it.
How long before all the ice melts? You are reminding me of the Tootsie Pop owl.
Just pick it up and drink it. Had I known this is what you intended, I'd have found another date.
Can we just have the graphic without the talking next time?
The estimate as to when all of the ice melts. Doesn't mean the ice caps are not melting. The subsidence of land is not as significant as the ocean level rising as the polar ice caps melt. .
Arctic Sea Ice melting only makes a very very small contribution to SLR (and only because of salinity difference). What will be very significant is when we run out of sea ice up there and the heat has to go somewhere else.
As long as Earth the Sun and Moon keeps in orbit eras will be our seasonal normal.
Where I live the climate is more cool than it is warm I don’t know if I want it to be any colder that’s for sure!!
In Arkansas we have had 105-106 degree temperatures every single day for almost 3 weeks in a row. It is brutal.
@@superbwater78 this heat wave soon pass.
When will it melt ??? Don't know nobody kept records the last time it happened. Nobody knows the speed or ins and outs of the warming cycle.
How long before all the world is covered in ice .....
Here’s another chance to educate yourself.m.czcams.com/video/InhMCJro6hA/video.html
Good luck with the miniatures!
All the ice will never melt.
Why upgrading Infrastructure and related technologies, matters. Besides, we need the practice for developing underwater Cities.
You realize a oil executive hosted cop 27
You realize a fossil fuel lobbyist is the Chief of Staff for the GOP Congressional Natural Resource Committee 😕 Too much ugly in the world. Peace.
@@ravenken the house is a clown show now.
Due to the sci ne also of freezing in the freezer and icicles making, we could use techniques to rebuild the lost glacier of Iceland and use ln2 and advanced freezing techniques to refrozen mass amounts of our world water, take form the ocean,freezer and place in ice caps of the planet
Thank you very much, CrowdScience.
You can find more episodes of CrowdScience here: czcams.com/play/PLz_B0PFGIn4cT4qluPKNtMmBAPPrpoxvT.html
Beautiful looking doc, unfortunately poor audio with lots of background chatter and noise!
This is live sound caption not studio soundproof caption. get real
And no mention of the 100 meters of snow since 1942 when planes had to land in Greenland, that's where they are now. No mention that all predictions of an ice free Arctic have failed. This year a massive Russian icebreaker had to take the Suez canal to get to Kamchatka because the ice was too thick for it to break through in July near Siberia..
Great wallpaper. Several dubious claims. Still, I gave it a like.
Drinking water 🚰 to collect + make portable hydroelectric turbines . All before it goes to the sea now. 🌊 Melting happens every year ...In Canada 🇨🇦 as well
She says "thousands of years', he says "hundreds of years", and DW Copernicus says 2,100: 77 yrs. ! GET YOUR ACT TOGETHER!
Correction: DW says 2/3rds gone by 2,100.
None of us will be around when it does I can tell you that for sure.
😱 Go Nuclear!
Nice Yellow Blob! Is that like your trade mark or something? Your experts must be charging you by the minute! 😂😂 Seriously though, this is a radio blob... blog! Right!
Climate doom has been wrong for the past 70 years. Clowns they are.
Would have been better without the graphic trying to put me too sleep.
Show us the map unless you’re hiding something
Nice topic, but please show more of the interviews and other video. The graphic is ok, but very annoying.
If they had video evidence, they'd show it. But they don't, so they can't.
How long till u can't step foot there or in Alaska or Canada .there saying permafrost is as thick as 100 meters in places it's all going to liquify
Sorry to say this, but your graphic between pictures and clips it is anoying and I gust skiped after 5 mins to where are pictures and clips,
1:25 ...and people called me a doomsday idiot.... Well bite me.
? does BBC just fired their video editor?