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Arctic amplification: How the albedo effect speeds up global warming | Jon Gertner | Big Think 

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Arctic amplification: How the albedo effect speeds up global warming
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The Arctic right is currently warming about twice as fast as the rest of the world.
Ice is white and bright and is able to reflect solar energy back into space. When it melts and exposes dark, open ocean, that open ocean absorbs more sunlight and more energy.
This creates a kind of feedback loop. The darkness absorbs more solar energy - more sunlight. In turn, this accelerates the melt of the ice.
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JON GERTNER
Jon Gertner is a journalist and historian whose stories on science, technology, and nature have appeared in a host of national magazines. Since 2003 he has worked mainly as a feature writer for the New York Times Magazine. His first book, The Idea Factory: Bell Labs and the Great Age of American Innovation, was a New York Times bestseller.
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TRANSCRIPT:
JON GERTNER: One thing that's particularly worrisome about the Arctic right now is that it's warming about twice as fast as the rest of the world. And there's this term scientists use for it, called arctic amplification. So whereas the rest of the Earth on average has warmed about 1 degree centigrade since pre-industrial era, the Arctic is more like 2 degrees centigrade. And some places in Greenland Pronounced, and in Siberia, too. There are two really worrisome results from this. One is that the ice that covers the Arctic, the sea ice, this is floating sea ice, that goes over the North Pole and around the Arctic Ocean has been decreasing dramatically over the past 20 years.
In fact, this is probably the greatest sort of most significant natural change to ecosystems on Earth since human beings have been around. It's declined by somewhere between a third and half. What that means is that as the ice sort of decreases, the albedo of the Arctic changes. Ice, of course, is white and bright, and it reflects solar energy back into space. When it exposes dark, open ocean, that open ocean absorbs more sunlight and more energy. And it creates a kind of feedback loop that the more ocean that's exposed, the more energy that's absorbed, the more heat that's actually absorbed as well. And it kind of builds on itself. So it feels like the-- it is true, the more Arctic ice that we lose, it seems, the more we are in danger of losing more Arctic ice. And right now the summer time melt is about at record levels.
The sea ice sort of reaches a low point by late August, and almost every year it's either at record levels or near record levels in terms of how much has been lost. When we lose sea ice we don't raise sea levels. It's like ice melting in a glass, it just melts. It has negative effects, but it doesn't flood our cities. However, the other problem of the warming Arctic is that Greenland's ice and Greenland's ice sheet, when it melts it does drip into the ocean, and it does add mass to the ocean, and does raise sea levels. And it does create this kind of future of floods. And the same goes for Antarctica on the other side of the Earth. Greenland, Greenland is vulnerable to similar kinds of feedback loops that the Arctic ice For instance, as Greenland melts, the altitude of the ice, this big dome of ice gets lower down.
And at lower altitudes there are warmer temperatures. So the more Greenland melts on top, the more the altitude of the ice sheet declines, and the more vulnerable that is to summertime melt. At the same time, over the last few years especially, scientists have noticed that the ice sheet is getting darker. Especially on this strip of western ice kind of near the southwestern coast. And this darkness is caused by a couple of things. One, sometimes it's lack of snow cover. Ice is actually darker than snow, and we have fresh snow, you have a very bright reflective surface. But I think more crucially what's happening is that there's kind of algae and other organisms that are growing on the ice sheet that lend it a darkness. And there's also sort of carbon soot that's deposited there. And I've been on the ice sheet several times. And when you think of the ice sheet, you think of maybe it's, oh, it's like a skating rink, or it's like being on a kind of ski slope.
And in some parts it feels like being on a kind of snowy field. But in a lot of parts, especially on the west, it's like being on top of brittle, dirty ice. And you look down and you can actually see these kinds of dark, strange pockets within. And there are a number of scientists that are doing experiments on thos...
For the full transcript, check out bigthink.com/videos/albedo-ef...

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15 июн 2024

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Комментарии : 414   
@bigthink
@bigthink 4 года назад
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@suziperret468
@suziperret468 5 лет назад
The hotter it gets, the hotter it gets....
@RockeroNato
@RockeroNato 5 лет назад
The title is wrong. The less albedo, the more it heats
@GwyndolinSimp
@GwyndolinSimp 3 года назад
It's always appreciated that people of culture spread the name of succubi
@gwvaio
@gwvaio 5 лет назад
I can imagine the visuals from all the nature documentaries that I watch but it would be good to have some video cutaways while he’s talking.
@discursion
@discursion 5 лет назад
Let's word it out this way: exponential.
@2LegHumanist
@2LegHumanist 5 лет назад
It's not exponential, but there is a positive feedback loop.
@discursion
@discursion 5 лет назад
Doesn't a positive feedback loop precisely imply exponentiality? It might well be something akin to "f(x)=x^a" where "a" is a tiny fraction, which is increasingly adding up nonetheless.
@2LegHumanist
@2LegHumanist 5 лет назад
@@discursion Sorry, you're right. It's exponential in the sense that compound interest is exponential. The increased size results in a higher compound in each cycle.
@discursion
@discursion 5 лет назад
I guess this only indicates me that saying "exponential" would induce people into a misunderstanding of the issue due to a lack of sufficient mathematical knowledge among the population. A "fractional exponent" is generally what is implied in a feedback loop that doesn't go "out of control".
@discursion
@discursion 5 лет назад
@@2LegHumanist That is another good way of putting it. That puts the whole "environmental abuse as an increasing debt" into a whole new light.
@albedothevirginsuccubus9596
@albedothevirginsuccubus9596 4 года назад
Heyy don't accuse me, lower life forms >:0
@grantbotto3504
@grantbotto3504 5 лет назад
Great explanation. Thank you for producing these videos.
@solmalachi2548
@solmalachi2548 5 лет назад
I wonder how dramatically all of those wildfires in Alaska and Greenland are effecting the albedo
@solmalachi2548
@solmalachi2548 5 лет назад
Exponentially perhaps?
@Skulltaro
@Skulltaro 5 лет назад
solomon dunston not at all
@MartinA-kp8xg
@MartinA-kp8xg 5 лет назад
No different from the way they always have. However much??? It's no different.
@frankiefresh79
@frankiefresh79 4 года назад
I read that AA is still under debate, but I can explain: It's not only the albedo, but it's related due to the specific heat of ice. It's almost the half of water, thus causing warming twice as fast compared with the rest of the world (c water is 4.187 kJ/kgK, for ice 2.108 kJ/kgK.) This theory also explains that large AA occurs only from October to April. because the temperature is below zero in these months. In summer the temperature is moderated by the Latent heat of melting ice. But this will change when all ice has gone. I'm not sure the climate models are aware of this ?
@fractalnomics
@fractalnomics 3 года назад
Yet snow and water have emissivities of around 0.90: this makes them near-perfect absorbers of infrared and very poor reflectors. Figure that
@InnocentJasmine
@InnocentJasmine 3 года назад
Would it be more accurate to say the decrease of the Albedo effect is what is speeding up global warming? As sea ice melts, there is less chance for the Albedo effect to happen (aka there is less mass for the sunlight to be reflected back into space). This title seems misleading.
@jimmyshrimbe9361
@jimmyshrimbe9361 5 лет назад
Echo systems
@illuminayc6041
@illuminayc6041 5 лет назад
Fuck. Here in my country when july comes it isn't that hot anymore compared to may or april but shit, it's getting hotter and hotter
@xlyoutube
@xlyoutube 5 лет назад
I hesitate to have children for I don't know what kind of world they would be living in.
@Zeratul187
@Zeratul187 5 лет назад
Same here man, same here
@DagoRuiz
@DagoRuiz 5 лет назад
Yes, the 1950s had Artic Sea Ice loss of below 50%. It was feared that it would disappear within a generation. Then the 1970s happened and deposited more ice ever seen for the 1900s. We are no where near 1950s levels of ice loss. All the graphs start in the 1970 (huge ice deposited decade) to give the illusion of ice loss. Starting a graph in the 1920s, when records actually started, we would see the trend is cyclical.
@SnoozeTheRecluse
@SnoozeTheRecluse 5 лет назад
bruh
@brightdaysarehere3094
@brightdaysarehere3094 5 лет назад
That doesnt help..raise good kids to combat all the bad ones
@qhack
@qhack 5 лет назад
Oddly enough, your parent's generation said the same thing when Y2K was the FUD of the day. Your grandparent's said the same thing about Gloabal Cooling. Their parent's said the same about the cold war and the threat of Mutually Assured Destruction. In all cases, people worked the issue to mitigate the impending disaster. Live your life and take comfort in the knowledge that people are talking about it.
@SnoozeTheRecluse
@SnoozeTheRecluse 5 лет назад
Summary of this video: The ice caps are melting 😐🗿
@danchase7454
@danchase7454 5 лет назад
Yes. Albedo is hot. I know that. Her character class specializes in that.
@aperson2730
@aperson2730 5 лет назад
In summary....we're in trouble ☹️
@brando4221
@brando4221 5 лет назад
In summary, Im very scared, of the dark (ice).
@happyvideos7791
@happyvideos7791 5 лет назад
We'll adapt
@sunwukong3108
@sunwukong3108 3 года назад
These comments all freaking out and I'm just here for class becoming more disappointed than I already was
@MrRuffus09
@MrRuffus09 5 лет назад
I thought greenlands glacier's were growing?
@mikeb1031
@mikeb1031 5 лет назад
bill willie nope they are at record lows
@MrRuffus09
@MrRuffus09 5 лет назад
@@mikeb1031 www.nbcnews.com/mach/science/key-greenland-glacier-growing-again-after-shrinking-years-nasa-study-ncna987116
@brando4221
@brando4221 5 лет назад
That was last years headline. This year is a different record.
@MrRuffus09
@MrRuffus09 5 лет назад
@@brando4221 That article was produced in march of this year. It states that the glacier has been growing for the past two years.
@mikeb1031
@mikeb1031 5 лет назад
@@brando4221 the glacier ice volume is still on a trajectory downwards. As the article stated, 'it is still going'. Arctic sea ice extent is at record lows and also on a trajectory downwards
@ivandobsky4103
@ivandobsky4103 5 лет назад
Do clouds have an albedo effect?
@ivandobsky4103
@ivandobsky4103 5 лет назад
@TheHealthPhysicist So with increased levels of cosmic radiation penetrating our atmosphere (resulting in extra cloud formation, plus added particulates from the increase in volcanic activity) can we hope that the additional cloud cover (via albedo) will help cool the planet? I believe Princeton published something on this recently (Jan 2018) - is that correct?
@ivandobsky4103
@ivandobsky4103 5 лет назад
@TheHealthPhysicist Phew ! so accordingly, you are saying that this is bunk: cosmicrays.oulu.fi/ and so is this: home.cern/science/experiments/cloud I can accept your dismissal of the Finns, but the folk at CERN will be very disappointed.
@Marco-it2mr
@Marco-it2mr 5 лет назад
@@ivandobsky4103 The Finns do not show there is an increase in cosmic rays. The CLOUD experiment concluded cosmic rays play some role in particle formation that *could* lead to cloud formation, but also established it is unlikely to play a significant role in today's climate (change).
@ivandobsky4103
@ivandobsky4103 5 лет назад
@@Marco-it2mr thanks for the clarification. i was under the impression we were experiencing a higher than usual level of cosmic radiation (due to waning magnetosphere => low solar activity), which in turn would increase cloud formation, which was ultimately going to assist mitigate warming. regrettably, from what you say, that appears to not be the case.
@Marco-it2mr
@Marco-it2mr 5 лет назад
@@ivandobsky4103 You're welcome. There's a slight upward trend, but that would have go to a lot further up to have any measurable impact on cloud formation. And even then (tsk, tsk, CERN, not very well described in your press releases), the question is *which* type of clouds will be seeded more. Some type of clouds are expected to increase warming (high clouds, see for example earthobservatory.nasa.gov/features/Clouds/clouds3.php). The albedo effect is considerable, but clouds also reflect radiation reflected by/emitted from earth.
@x3ICEx
@x3ICEx 4 года назад
01:59 When we lose sea ice we don't raise sea levels. 02:03 It's like ice melting in a glass, it just melts. *Sure it does. No: Ice, while frozen stays partly above the water level. Once it melts it floats no more. Thus sea levels rise.* South pole for example: "highest point on the icecap is in Australian Antarctic Territory at 13,451ft (4100m)" "The ice is estimated to be about 2,700 metres (9,000 ft) thick at the Pole, so the land surface under the ice sheet is actually near sea level."
@scottekoontz
@scottekoontz 4 года назад
1:59 Sure, but he is correct that we are now losing far FAR more Arctic ice than we thought, and scientists really do know the difference between the ice melt that will raise sea levels, and the ice that will not. Warming planet, expanding water, much of the ice melt will raise sea levels... science for the win.
@Marco-it2mr
@Marco-it2mr 4 года назад
Ice in a glass of pure water will not raise the water level, even if some of it is above. It's Archimedes principle. However, there *is* a slight sea level rise for melting sea ice, because the ice is almost pure water, whereas sea water is very salt. This means there is a significant density difference between the melted ice and the sea itself.
@MartinA-kp8xg
@MartinA-kp8xg 5 лет назад
Everywhere is warming twice as fast as everywhere else. If its cold where you are it's so so hot elsewhere to make up for it you know. Sarcasm just in case you don't realise.
@scottekoontz
@scottekoontz 4 года назад
Warm records about 3:1 over cold records. So you are correct that the people running around saying that their pappy's barn is cold this morning are forgetting that the G in AGW.
@MartinA-kp8xg
@MartinA-kp8xg 4 года назад
@@scottekoontz yes but I was being sarcastic
@MartinA-kp8xg
@MartinA-kp8xg 4 года назад
@@scottekoontz the people saying it hot in pappys field are forgetting the trouble crops around the northern hemisphere are having with the late spring. , and the mainstream media does not report on this either. The 3.1 you state is not correct this isn't sarcasm.
@Marco-it2mr
@Marco-it2mr 4 года назад
@@MartinA-kp8xg you are right, it is closer to 10:1 record warm vs record cold...www.newscientist.com/article/2192369-so-far-2019-has-set-35-records-for-heat-and-2-for-cold/amp/
@MartinA-kp8xg
@MartinA-kp8xg 4 года назад
@@Marco-it2mr so you make new claim does mean you accept your other claim was wrong
@nielsdaemen
@nielsdaemen 3 года назад
Luckily *the Stefan Boltzmann law is a* *huge negative feedback* wich increases Energy radiated into space ~1.4% for every 1°K increase.
@DANGJOS
@DANGJOS Год назад
Well it would have to, otherwise planets would continue to get hotter and hotter with no way of dumping the excess heat
@eonoe11
@eonoe11 Год назад
the title is wrong. he's got it backwards. the more it melts, the less the albedo, the faster we heat up, because of reduced reflectivity. The greater the Albedo, the more heat is sent back up into space, the cooler we stay. Jeesh.
@invox9490
@invox9490 4 года назад
HALF! HE SAID HALF!? Holy F...
@bencharoenwong9296
@bencharoenwong9296 5 лет назад
Oh wow, first comment. Also, seems like we are screwed.
@brightdaysarehere3094
@brightdaysarehere3094 5 лет назад
Ben Charoenwong they want you scared
@mj91212
@mj91212 5 лет назад
Yeah, we are, but at least the Earth has natural systems for getting rid of most pollutants. They don't work fast enough to keep up with humanity, but once we're gone, the Earth will be able to clean itself up. After that, life will go on, and it will be as though we were never here.
@ravagetime
@ravagetime 4 года назад
Feedback loops are speculated not demonstrated
@kameronbriggs235
@kameronbriggs235 4 года назад
Well they may be real and work in theory, but obviously earth is gonna be way more complicated than their simple model for how their guessed feedback loop would work. Yeah verification is needed, and getting a sigma 5 or above alone, is not enough. You have to determine more than just correlation.
@scottekoontz
@scottekoontz 4 года назад
@@kameronbriggs235 Well, seems the scientists working on a science that is more than 100 years old know a lot about feedbacks. Is ice melting? Permafrost thawing? CO2 increasing? Methane increasing? Albedo changing? Doesn't;t matter how complicated a system is, there are always changes that can be observed. Always.
@brightdaysarehere3094
@brightdaysarehere3094 5 лет назад
How come it snowed in mexixo last week then?😒
@avader5
@avader5 5 лет назад
reminds me of Vangelis Albedo .39!
@energycantbedestroyeditcan7671
@energycantbedestroyeditcan7671 2 года назад
So we are getting screwed exponentially
@orugnet
@orugnet 5 лет назад
Those damn al bhed bruddah
@dark-lord-vinay
@dark-lord-vinay 5 лет назад
Ah so the al bhed are behind this
@brando4221
@brando4221 5 лет назад
Especially Al Ben Farteen using dirty stinky bombs and WMDs
@Shiro_Amada
@Shiro_Amada 5 лет назад
I knew Yeven would be mad at us for using machina.
@dark-lord-vinay
@dark-lord-vinay 5 лет назад
@@brando4221 True, the Al Bhed have gone too far using the accursed machina for their own use against Yevons teachings smh its the end of the world as we know it. Sin will finally be upon us ! WAKKA WAKKA
@desertnurse8513
@desertnurse8513 5 лет назад
How about figuring out how to capture all the water thats melting and runninig into the ocean and send it to the places that are running out of water all over the world. the world.
@JASONTang0911
@JASONTang0911 2 года назад
Hi See what’s going on now 2 years from now
@PeterChoyce
@PeterChoyce 4 года назад
You're talking FEEDBACK LOOPS , NOT Albedo. That's when cyclicates in the air from pollution fall to earth, causing more exponential warming - otherwize known as GLOBAL DIMMING.
@bushcraftallday
@bushcraftallday 3 года назад
the fact that youtube uses a compromised site like wikipedia to fact check this video is stupid.
@markkravitz4678
@markkravitz4678 3 года назад
👍👍 Try and fail, but don't fail to try. The best young entrepreneur ever @evenkingsfall (his insta) always says you have to THINK BIG to WIN BIG! Always keep that energy! Good content as always 🖤
@johannesswillery7855
@johannesswillery7855 5 лет назад
Could someone explain to me why a green and productive Siberia and Greenland is a bad thing?
@nick000002
@nick000002 4 года назад
Without the Ice, the world will burn. Hope thats a good enough reason!
@johannesswillery7855
@johannesswillery7855 4 года назад
@@nick000002 Actually the Earth has been free of ice more than it has had ice. And life flourished.
@Marco-it2mr
@Marco-it2mr 4 года назад
Ehm...how fast do you think it will turn green and productive? Greenland is largely bedrock. When the ice is gone, it will take decades before sufficient fertile ground is available for that part to become really productive. Siberia is different, as you have large regions with frozen tundra. If that melts, this happens: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-9vP7DiQSPbc.html Some 'good', lots 'bad'. I also wonder what would happen if much of the (primarily Asian) world would become reliant on Siberian food crops, as their own countries become too warm to be productive enough...
@Marco-it2mr
@Marco-it2mr 4 года назад
@@johannesswillery7855 It was life, but not as we know it today.
@johannesswillery7855
@johannesswillery7855 4 года назад
@@Marco-it2mr Historically most of the warming occurs closer to the poles. As it is now. And there is evidence that in periods between glaciation and permafrost those regions are very productive. The Vikings lived and farmed in Greenland until it re froze. Siberia had humans and animals.
@sandaminiyatapana9630
@sandaminiyatapana9630 2 года назад
😎❤️
@observer4292
@observer4292 5 лет назад
We are truly in danger people. We must band together, it’s all we have. Help the planet by going plant based to stop supporting the very industry that is DRIVING global warming. Watch documentaries, read books and articles and peer-reviews. Don’t sit back and worry, find out what you can do and do it. Make changes and spread knowledge to continue the cycle of change we need to get through this.
@brando4221
@brando4221 5 лет назад
Impressed st the lack of detail in this zealous comment. What industry? We shuld do what, change? To stop what, change? Get knowledge. Wow specific. Much informative. So scared.
@NewOrleansboii
@NewOrleansboii 5 лет назад
Yes peasants, do something about climate change. First, give us more money. Higher tax baby. We'll do our part in buying Ferraris and eating Kobe steaks for breakfast. Climate change must be stopped 😉
@TheRealSyncRow
@TheRealSyncRow 5 лет назад
best waifu!!!... praise Momonga
@Poseidon6363
@Poseidon6363 5 лет назад
I can imagine future generations looking back and thinking how selfish we were not to do anything.
@Gene601
@Gene601 5 лет назад
I can imagine those same people saying how gullible the alarmists were.
@2LegHumanist
@2LegHumanist 5 лет назад
@@Gene601 Nope. You people will be regarded in same way as the people who swallowed the tobacco lobby's propaganda regarding the health risks associated with smoking between the 1950s and - 1980s. That's who you are. Someone who falls for fossil fuel industry propaganda in the face of overwhelming evidence.
@Gene601
@Gene601 5 лет назад
@@2LegHumanist What overwhelming evidence? 140 years of weather records, largely taken in one country (USA)? I think not.
@2LegHumanist
@2LegHumanist 5 лет назад
@@Gene601 LMAO. You think we're relying on 140 years of weather measurements from one country? Bwahahahahahahahahahahaha *wipes tear from eye* Bwahahahahahahahahahahahahahahahah *falls of chair* Bwahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahaha *picks self up* ha ha... ah bless.
@Gene601
@Gene601 5 лет назад
@@2LegHumanist Laugh it up all you want. Humans don't drive the climate. The Sun does.
@brando4221
@brando4221 5 лет назад
The title is incorrect, no where does he describe the albedo affect as speeding warming. The title shuld say algae and chemtrail/ air pollution deposits darken ice and absorb more heat.
@massimookissed1023
@massimookissed1023 5 лет назад
You got such a hard-on at the chance to type your chemtrailer-trash arse dribblings, you forgot to watch the video.
@massimookissed1023
@massimookissed1023 5 лет назад
1:18 fuckwit.
@brando4221
@brando4221 5 лет назад
Albedo effect is reflectivity from ice asshat
@2LegHumanist
@2LegHumanist 5 лет назад
LMAO. chemtrails. What a dumb arse.
@timeless93
@timeless93 4 года назад
As ice melt and more water exposes, the reflectivity lowers which captures more heat leading to more warming
@AnilJacobs
@AnilJacobs 5 лет назад
Scary!
@jean-marclamothe8859
@jean-marclamothe8859 5 лет назад
Anil Jacob Euh....BOO!! Scarier no?
@AnilJacobs
@AnilJacobs 5 лет назад
jean-marc lamothe What’s a BOO
@albedothevirginsuccubus9596
@albedothevirginsuccubus9596 4 года назад
I'm not scary
@Kiwittgmail
@Kiwittgmail 5 лет назад
Seems wrong put a like on this video. More a concerned sad icon required.
@dsthorp
@dsthorp 5 лет назад
Do not worry. We appreciate the information being available. This is the reason for the like.
@TotalSinging
@TotalSinging 5 лет назад
What he's not telling you is that Greenland Ice grew at an incredible rate since the 1940s. How do we know? The discovery of a P-38 plane left there after a crash during WWII. It was discovered under 300ft of ice. 300 FEET. Using math we can calculate how much the Greenland ice grew on average since the mid the 1940s based on the height of the plane. What he's also not talking about is that while the Artic ice is shrinking at twice the rate as predicted (notice the use of the word "predicted"), the ice in Antarctica is growing. First law of thermodynamics. Where there is heat there is cold. It's the Earths natural state of balancing things out.
@augustuswetzel
@augustuswetzel 5 лет назад
That is not the first law of thermodynamics.
@Beradikals
@Beradikals 5 лет назад
Pure babble you speak. That is not the first law of thermodynamics.
@2LegHumanist
@2LegHumanist 5 лет назад
I can regurgitate "science" from conspiracy websites, me.
@AT-wj5sw
@AT-wj5sw 5 лет назад
The world is going to get warmer. The weak will die the strong will survive, the world will keep turning.
@Nine-Signs
@Nine-Signs 5 лет назад
You seem to presume that the warming will stop before all complex life is extinguished. Climate driven mass extinction events tend not to work like that and take hundreds of thousands if not millions of years to reverse themselves via natural processes allowing for complex life to be sustained once more. Without radical change, our time is up.
@jaydee975
@jaydee975 5 лет назад
A warming climate should mean much warmer continental winters? Not yet unfortunately. It sure would be nice to have 80° days in January in North Dakota , as well as the longer growing season, and more land to be able to cultivate. Which would definitely start to happen if the earth is warming as fast as they say it is. However, The seasonal patterns seem to be shifting. Winter seems to be coming later, and spring seems to be arriving later as well.
@thepurplepanda4
@thepurplepanda4 5 лет назад
It's an average warming, some areas get affected different, hence why it's more called climate change
@Nick-xz8ng
@Nick-xz8ng 3 года назад
This guy looks like he’s about to cry
@giofyr
@giofyr 4 года назад
You FRAUD you!!
@charachoppel3116
@charachoppel3116 5 лет назад
Now, temperatures have been rising during the industrial era. But from about 1300 ad it was sinking and we got the Little Ice Age. Before that we had the Medieval high. And during the Dark Ages there was low temperatures again. The Romans lived in a warmer world. The temperatures have been shifting all the time since the latest ice age, and it was shifting during the ice age, and during the ice ages before that, and have been shifting since the beginning of time here on earth. And this era of warming climate will come to an end, and then the world will go colder again. Only a matter of time.
@mhellerart
@mhellerart 5 лет назад
it will get colder again, sure... whether we're around for it is another thing... all the climate change warnings are not about how to 'save the earth' but how to sustain an earth that supports humans. but anyway, you're talking about fluctuating temperatures during earth's history... this is a good visualization that shows the current terrifying trend. xkcd.com/1732/
@Marco-it2mr
@Marco-it2mr 5 лет назад
@@mhellerart The funny thing is that Chara Choppel knows about these variations because of scientific research, but rejects scientific research when it shows the current warming period is causally linked to anthropogenic emissions of greenhouse gases.
@kameronbriggs235
@kameronbriggs235 4 года назад
Give this guy old records. Hes working with a tiny reliable data set obviously. You know how much work people have to do to actually figure out the sea ice extent of the past? Its not all science, its alot of history. But there is actually scientific evidence to indicate that a much warmer north pole is normal and natural, indicated by old trees with their roots still in the ground that are many many miles north of any other vegetation in canada. Glad he said natural though, but hes dead wrong about "record levels"...
@MartinA-kp8xg
@MartinA-kp8xg 4 года назад
Yss its not mostly about science at all is it, I agree its observations historical records reliable data, the history of tide gauges the maintanance the quality the locations and is the stringent criteria being met. . The same goes for stevensons screens too. You have to question the data how was it gathered before you do any maths with it.
@Marco-it2mr
@Marco-it2mr 4 года назад
Nothing on earth is "normal", everything on earth is "natural". The issue isn't whether earth has previously experienced an ice-free north pole, the issue is what the changes mean for the biosphere as a whole, and human society in particular.
@MartinA-kp8xg
@MartinA-kp8xg 4 года назад
Things haven't change as much as catastrophised, human nature loves a good catastrophy, with those that gain by the believe publicising and exaggerating we now have the hype. Most of it is pridiction, that is not here and may never happen. Well not anytime soon anyway.
@kameronbriggs235
@kameronbriggs235 4 года назад
@@MartinA-kp8xg yeah earth is fine, just clean up the plastic and cut solar and win to stop using up stuff for batteries so fast. Plus its so expensive, it really hurts the poorest people in the world. The climate is doing just fine.
@Marco-it2mr
@Marco-it2mr 4 года назад
@@MartinA-kp8xg A car hurtling at 100 km/h towards a wall isn't a catastrophe, until you get too close to gently or even safely use the brakes.
@jean-marclamothe8859
@jean-marclamothe8859 5 лет назад
Do you know the average temperature in a year of the entire Arctic? A journalist went there and have seen a dark spot SO.....we are doomed!! Don't take any chance let's kill ourselves rapidly🤣
@2LegHumanist
@2LegHumanist 5 лет назад
You first.
@2LegHumanist
@2LegHumanist 5 лет назад
@Jay Arre and?
@mscplse699
@mscplse699 4 года назад
*me watching because I don’t know how to pronounce it*
@jlloydb1of9
@jlloydb1of9 5 лет назад
Extinction is earth's trick, not ours.
@Dellious69
@Dellious69 5 лет назад
The Earth is a self correcting feedback loop. We're fine.
@2LegHumanist
@2LegHumanist 5 лет назад
Thanks, Mr Internet expert who either didn't watch the video or doesn't understand what a positive feedback loop is.
@Dellious69
@Dellious69 5 лет назад
@@2LegHumanist nps. I'm here to help.
@nbrown5907
@nbrown5907 5 лет назад
Come here to lower your I.Q. at at a faster rate.
@brando4221
@brando4221 5 лет назад
Im so scared now Ill believe anything. What shuld I do? Drink more bottled water?
@BrainsApplied
@BrainsApplied 5 лет назад
*Luckily, it's all a hoax. Imagine global warming being real* 😝 That was definitely sarcasm guys 😉
@mick7sp
@mick7sp 5 лет назад
Al is that you?
@anthonymorris5084
@anthonymorris5084 2 года назад
zzzzzzzzzz. Still waiting for doomsday.
@michaelcorey9890
@michaelcorey9890 5 лет назад
Warming nonsense...
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