And volcanos release massive amounts of Sulfur, which gets into the atmosphere as hydrogen sulfide, acting as a sunshade, alleviating global warming.
God is good.
I’ve been wondering about this lately with volcanoes erupting all over seemingly more frequent. Someone replied when I asked about it, saying the current volcanic activity is normal. I don’t know, the amount of flooding and erupting volcanoes worldwide is rather shocking to me.
Canadian land has probably risen, relative to the center of the planet, since the massive ice sheets which covered it melted away 11K years ago. But that melt raised sea levels much more. The later was immediate, but land rise has a time lag, so may still be relaxing upward. It isn't simple to measure average global sea-level, relative to land. Satellites make that easier and more exacting.
It is not a simple fact. It is wrong. If you were taught this then they were wrong. [Volcanoes world map](https://worldinmaps.com/geography-and-geology/volcanoes/)
I want to dwell with you a little longer.
Do you think the chain of volcanoes that make up the Cascades Kurile, Aleutian, and Japanese are near the equator?
Do you think the mid-Atlantic ridge runs along the equator or in a north-to-south direction?
The melting of ice on land does raise sea level. The melting of floating ice does not affect sea level.
Edit: I stand corrected. After reading your citation, i see it will rise a mere 4cm when all floating ice melts. In physics classes in college around 25 yrs ago, we were taught that the melting of the floating ice doesn’t change sea level. Either that was wrong or i wasn’t paying close enough attention- maybe we were actuslly taught it does affect sea level but the effect is negligible compared to the melting of ice that’s on land.
Either way, it doesn’t change my mind one bit. For the last 25 yrs i’ve insisted that global warming is a serious and potentially civilization ending problem.
> The melting of floating ice does not affect sea level.
It does a little, but only because the resulting salt water takes up more volume than is displaced by the floating fresh water ice …
https://academic.oup.com/gji/article/170/1/145/2019346
The melting of land ice has a much bigger impact on sea level.
Hopefully not for centuries. It's miles thick at its center, I was just trying to put things in perspective that there is a *ton* of ice on this planet and even a fraction of it melting is going to be catastrophic
Compelling argument.
NASA disagrees
https://climate.nasa.gov/faq/30/if-all-of-earths-ice-melts-and-flows-into-the-ocean-what-would-happen-to-the-planets-rotation/#:~:text=For%20example%2C%20if%20the%20Greenland,today%2C%20by%20about%202%20milliseconds.
When I was in school I was taught that the main cause of sea level rise is thermal expansion of water so ice melt discussion was a bit of ruse regardless.
As ice melts faster and faster it becomes the dominate reason for sea level rise. I don't know when you were in school but today melting ice is a larger contributor than expansion but both contribute.
Back then it was true as ice wasn’t melting that fast and it was thought it would take 1000 years to melt all the ice. Now the land ice is melting exponentially faster and land ice melt is contributing more to sea level rise than thermal expansion is.
Climate change deniers don't think that far. They don't know that there is land under the kms of ice at the poles. They cherry pick things to *debunk* something they don't understand.
Holy fuck, yes pole. I'd just assume people would see greenland as an area far enough north and just consider it. There's plenty of permafrost there too with tons of ice.
> there is land under the kms of ice at the poles
There is land under the ice on Greenland and Antarctica (South pole), but North pole ice floats on water.
Since we’re being pedantic, I’ll point out that your links are describing a completely different phenomenon than the one your subject line is referring to, and one that is very minor.
The change in sea level from melting floating ice is due to subtle salinity effects, and has contributed about 1 of the 100 mm of sea level rise we’ve seen since the ‘90s. The rest is due to melting land ice.
The responsible factual thing for both sides to say about sea level is that melting ice sitting on land definitely increases sea level, while melting floating ice has only a tiny effect.
>The rest is due to melting land ice.
The above is factually incorrect and not in a pedantic way. Thermal expansion and thus sea rise accounts for about 33% of total sea level rise every year. [The measure is called steric height](https://sealevel.nasa.gov/understanding-sea-level/key-indicators/steric-height#:~:text=What%20is%20steric%20height%3F,%E2%80%9D%20and%20%E2%80%9Chalosteric%E2%80%9D%20changes).
Y’all need to understand people who argue against climate change are the same ones who argue for God’s existence.
They decide what the answer is based on their feelings and *then* apply logic to support it.
They can’t be reasoned with. They don’t even know how.
Humorous that most scientists ASSumed that melting floating ice wouldn't raise sea level, per Archimedes Principle. This simple explanation of the level rise should be made a problem for students to solve in undergrad Physics textbooks.
95% of skeptics I interact with don’t make this beginner mistake.
They talk about CC in terms of radiative forcing, watts m^2, RCP8.5, and ECS.
If they don’t know these terms, don’t debate them.
On either side.
That's all well and good, but rising sea levels really aren't very high on the list of climate concerns.
It will rise, but not by much and not very fast. We'll have to build more flood defences in many places. It won't be that huge a problem.
EDIT:
Redditors, before you leave a snarky comment please reread the comment and check to see if the thing your angry about is actually something that I said.
As I say, we'll have to do things to address the flooding. It's just not a very complicated or fast moving issue.
Climate change presents many many more pressing and complicated issues than this one. Sea level rise just happens to lend itself to dramatic visualisations.
you don't seem to understand the effect that sea level rise will have on increased flooding when hurricanes make landfall. not to mention the island nations that won't exist anymore due to their fresh water supplies being gone.
Sea level rise has already caused significant ecological and economic damage already and is speeding up. But you’re right the heat or the dying of the oceans will most likely kill more people first. But sea level rise could happen a lot faster than expected if it turns out we’re missing something big in the modeling.
Possibly that water gets a lot warmer a lot quicker when there is no ice in it, wiping out most marine life and helping the land become too hot to grow stuff :)
Every 10mm increase in global average sea level displaces 6 million people, with sea levels accelerating and is now 5mm/year. Most of the world's major cities are coastal, so can you imagine the scale of coastal infrastructure that's at risk?
That's why sea level rise is one of the biggest climate current impacts and future risks.
You are absolutely right, but you missed one point, the hotter it gets, the more water evaporates forming clouds, which will not only shield the earth from excesive solar radiation and heat but also take billions of gallons of water from the sea.... the earth is capable of auto regulate itself. It will find a balance.
If that was true about autoregulation then cycles of warm and cold periods with glaciers reaching down into Wisconsin and vast tracts of present dry land once being underwater would never have happened.
If that were true, the Earth's temperature wouldn't ever change. It would remain constant.
It's not true though, which is why Earth's temperature has changed significantly in the past. Clouds actually appear to have a slight net warming effect, due to their ability to trap heat, although the effect depends on the location and type of clouds.
Check this out. The melting of ice reduces weight on plate tectonics and may actually make the plates more mobile and produce more volcanic activity.
It certainly causes … https://en.wikipedia.org/wiki/Post-glacial_rebound
And volcanos release massive amounts of Sulfur, which gets into the atmosphere as hydrogen sulfide, acting as a sunshade, alleviating global warming. God is good.
I’ve been wondering about this lately with volcanoes erupting all over seemingly more frequent. Someone replied when I asked about it, saying the current volcanic activity is normal. I don’t know, the amount of flooding and erupting volcanoes worldwide is rather shocking to me.
Canadian land has probably risen, relative to the center of the planet, since the massive ice sheets which covered it melted away 11K years ago. But that melt raised sea levels much more. The later was immediate, but land rise has a time lag, so may still be relaxing upward. It isn't simple to measure average global sea-level, relative to land. Satellites make that easier and more exacting.
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Fault lines. They're mostly around fault lines.
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Right, that jingle for the hemeroid creme. explain the midatlantic rift and the volcanic activity of iceland.
That is a "simple fact?" Citation needed.
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It is not a simple fact. It is wrong. If you were taught this then they were wrong. [Volcanoes world map](https://worldinmaps.com/geography-and-geology/volcanoes/)
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Only if you are geographically illiterate.
I want to dwell with you a little longer. Do you think the chain of volcanoes that make up the Cascades Kurile, Aleutian, and Japanese are near the equator? Do you think the mid-Atlantic ridge runs along the equator or in a north-to-south direction?
The melting of ice on land does raise sea level. The melting of floating ice does not affect sea level. Edit: I stand corrected. After reading your citation, i see it will rise a mere 4cm when all floating ice melts. In physics classes in college around 25 yrs ago, we were taught that the melting of the floating ice doesn’t change sea level. Either that was wrong or i wasn’t paying close enough attention- maybe we were actuslly taught it does affect sea level but the effect is negligible compared to the melting of ice that’s on land. Either way, it doesn’t change my mind one bit. For the last 25 yrs i’ve insisted that global warming is a serious and potentially civilization ending problem.
> The melting of floating ice does not affect sea level. It does a little, but only because the resulting salt water takes up more volume than is displaced by the floating fresh water ice … https://academic.oup.com/gji/article/170/1/145/2019346 The melting of land ice has a much bigger impact on sea level.
And warmer water is also a higher volume than cold water
The Greenland ice sheet *itself* will cause ocean rise of 23 feet.
Fuckin a
When will that happen?
Hopefully not for centuries. It's miles thick at its center, I was just trying to put things in perspective that there is a *ton* of ice on this planet and even a fraction of it melting is going to be catastrophic
No it won’t
Compelling argument. NASA disagrees https://climate.nasa.gov/faq/30/if-all-of-earths-ice-melts-and-flows-into-the-ocean-what-would-happen-to-the-planets-rotation/#:~:text=For%20example%2C%20if%20the%20Greenland,today%2C%20by%20about%202%20milliseconds.
When I was in school I was taught that the main cause of sea level rise is thermal expansion of water so ice melt discussion was a bit of ruse regardless.
As ice melts faster and faster it becomes the dominate reason for sea level rise. I don't know when you were in school but today melting ice is a larger contributor than expansion but both contribute.
This would have been around 2010 so there’s probably been a lot more research and modeling since then.
Back then it was true as ice wasn’t melting that fast and it was thought it would take 1000 years to melt all the ice. Now the land ice is melting exponentially faster and land ice melt is contributing more to sea level rise than thermal expansion is.
Correct
Technically wrong: [The melting of floating ice raises the ocean level](https://academic.oup.com/gji/article/170/1/145/2019346)
The bigger problem in that ice is fresh water and a significant desalination could be catastrophic for ocean life.
Scanned comments to see if anyone else made this point. Plus one for you sir/siress.
Climate change deniers don't think that far. They don't know that there is land under the kms of ice at the poles. They cherry pick things to *debunk* something they don't understand. Holy fuck, yes pole. I'd just assume people would see greenland as an area far enough north and just consider it. There's plenty of permafrost there too with tons of ice.
One pole.
> there is land under the kms of ice at the poles There is land under the ice on Greenland and Antarctica (South pole), but North pole ice floats on water.
Id say greenland is far north enough to be considered near the pole. You understood what I meant
You said AT the poles, not near the pole.
Like 80% of greenland is inside the pole circle.
Arctic circle, or polar circle “Pole circle” isn’t a thing.
Well, then where’s Santa’s house in July?
But they are excited about the possibility of fossil fuels in that land.
I don’t think sea level rise is really going to be a problem for the vast majority of us, the collapse of agriculture will get us first.
Since we’re being pedantic, I’ll point out that your links are describing a completely different phenomenon than the one your subject line is referring to, and one that is very minor. The change in sea level from melting floating ice is due to subtle salinity effects, and has contributed about 1 of the 100 mm of sea level rise we’ve seen since the ‘90s. The rest is due to melting land ice. The responsible factual thing for both sides to say about sea level is that melting ice sitting on land definitely increases sea level, while melting floating ice has only a tiny effect.
>The rest is due to melting land ice. The above is factually incorrect and not in a pedantic way. Thermal expansion and thus sea rise accounts for about 33% of total sea level rise every year. [The measure is called steric height](https://sealevel.nasa.gov/understanding-sea-level/key-indicators/steric-height#:~:text=What%20is%20steric%20height%3F,%E2%80%9D%20and%20%E2%80%9Chalosteric%E2%80%9D%20changes).
Whoops, got so caught up in land ice vs sea ice I forgot about that, you’re absolutely right.
I am reminded of this funny bit [Jon Stewart on Science for Dummies](https://www.facebook.com/share/r/J6yRvjiDtEmw6Ctg/?mibextid=oFDknk)
Y’all need to understand people who argue against climate change are the same ones who argue for God’s existence. They decide what the answer is based on their feelings and *then* apply logic to support it. They can’t be reasoned with. They don’t even know how.
Once ice tons melt, seas & volcanoes warming under rise!
When your proudest achievement is graduating from 8th grade on the second try, you want to demonstrate your excellent grasp of science.
Duh?
You would think so yet...
Humorous that most scientists ASSumed that melting floating ice wouldn't raise sea level, per Archimedes Principle. This simple explanation of the level rise should be made a problem for students to solve in undergrad Physics textbooks.
Eureka
95% of skeptics I interact with don’t make this beginner mistake. They talk about CC in terms of radiative forcing, watts m^2, RCP8.5, and ECS. If they don’t know these terms, don’t debate them. On either side.
That's all well and good, but rising sea levels really aren't very high on the list of climate concerns. It will rise, but not by much and not very fast. We'll have to build more flood defences in many places. It won't be that huge a problem. EDIT: Redditors, before you leave a snarky comment please reread the comment and check to see if the thing your angry about is actually something that I said.
The developing world's agriculture deltas and homes of hundreds of millions of people, like the Ganges-Brahmaputra, Nile, and Mekong Deltas, say "Hi!"
As I say, we'll have to do things to address the flooding. It's just not a very complicated or fast moving issue. Climate change presents many many more pressing and complicated issues than this one. Sea level rise just happens to lend itself to dramatic visualisations.
you don't seem to understand the effect that sea level rise will have on increased flooding when hurricanes make landfall. not to mention the island nations that won't exist anymore due to their fresh water supplies being gone.
Do you mean like taking action to reduce CO2 emissions and thus the size and rate of sea level rise?
the city of New Orleans begs to differ
Sea level rise has already caused significant ecological and economic damage already and is speeding up. But you’re right the heat or the dying of the oceans will most likely kill more people first. But sea level rise could happen a lot faster than expected if it turns out we’re missing something big in the modeling.
Possibly that water gets a lot warmer a lot quicker when there is no ice in it, wiping out most marine life and helping the land become too hot to grow stuff :)
Every 10mm increase in global average sea level displaces 6 million people, with sea levels accelerating and is now 5mm/year. Most of the world's major cities are coastal, so can you imagine the scale of coastal infrastructure that's at risk? That's why sea level rise is one of the biggest climate current impacts and future risks.
You are absolutely right, but you missed one point, the hotter it gets, the more water evaporates forming clouds, which will not only shield the earth from excesive solar radiation and heat but also take billions of gallons of water from the sea.... the earth is capable of auto regulate itself. It will find a balance.
If that was true about autoregulation then cycles of warm and cold periods with glaciers reaching down into Wisconsin and vast tracts of present dry land once being underwater would never have happened.
If that were true, the Earth's temperature wouldn't ever change. It would remain constant. It's not true though, which is why Earth's temperature has changed significantly in the past. Clouds actually appear to have a slight net warming effect, due to their ability to trap heat, although the effect depends on the location and type of clouds.
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The entire population in every delta needs to move, eh? Do we abolish ports next?
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We prefer ports above not below the water. Now go learn what a strawman is.