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  #41  
Old Posted Oct 18, 2019, 8:08 PM
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Originally Posted by The North One View Post
Not any time soon that would cripple the city at least, also no hurricanes. LA has a pretty high elevation for a coastal city, all the eastern coastal cities are basically right at sea level. I'm pretty sure even if all the ice in the world melted much of downtown LA would still be above water.
It wouldn't, and neither would Detroit for that matter.
     
     
  #42  
Old Posted Oct 18, 2019, 8:15 PM
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downtown LA is ~250' above current sea level.

if the ocean rises that much, holy sweet flying fuck!
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  #43  
Old Posted Oct 18, 2019, 8:24 PM
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It wouldn't, and neither would Detroit for that matter.
https://www.businessinsider.com/what...imation-2017-4
Quote:
...sea levels would rise by 216 feet if all the land ice on the planet were to melt. This would dramatically reshape the continents and drown many of the world's major cities.
Los Angeles/Elevation
285′

Detroit/Elevation
656′
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  #44  
Old Posted Oct 18, 2019, 8:29 PM
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Originally Posted by The North One View Post
https://www.businessinsider.com/what...imation-2017-4


Los Angeles/Elevation
285′

Detroit/Elevation
656′
Then downtown Detroit would be gone before downtown L.A. The Detroit River is 574 feet above sea level. What do you think will happen when there is an extra 216 feet of water circulating the Earth?

656 - 574 = 82
82 - 216 = -134
     
     
  #45  
Old Posted Oct 18, 2019, 8:30 PM
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Then downtown Detroit would be gone before downtown L.A. The Detroit River is 574 feet above sea level. What do you think will happen when there is an extra 216 feet of water circulating the Earth?

656 - 574 = 82
82 - 216 = -134
WHAT IN THE FUCK?

you're going to have to explain your math here because it makes no sense.

downtown detroit is more than 600' above sea level. if the ocean really does rise 216', detroit will still be roughly 400' above sea level.
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  #46  
Old Posted Oct 18, 2019, 8:32 PM
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WHAT IN THE FUCK?

you're going to have to explain your math here because it makes no sense.
The Great Lakes water system is above sea level. The flood level is the elevation of the city minus the elevation of the body of water. Not the difference between the city and sea level itself.
     
     
  #47  
Old Posted Oct 18, 2019, 8:32 PM
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It'll continue to flow into lake Erie and down Niagara falls like it always does LMFAO

Sea water would literally have no impact on the flow at all, it wouldn't even touch it. Thanks for playing.
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  #48  
Old Posted Oct 18, 2019, 8:34 PM
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The Great Lakes water system is above sea level. The flood level is the elevation of the city minus the elevation of the body of water. Not the difference between the city and sea level itself.
wait, what?

do you honestly think that if the global ocean rises 216' that the great lakes would also rise 216'?

that's not how this works. that's not how any of this works.


the truth of the matter is that climatologists aren't quite sure what global warming means for the great lakes.

some models show more water, other models say the lakes might dry up due to greater evaporation.

it's a big question mark at the moment, but the water level of the great lakes is divorced from that of the global ocean, at least in a direct sense.
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  #49  
Old Posted Oct 18, 2019, 8:34 PM
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It'll continue to flow into lake Erie and down Niagara falls like it always does LMFAO

Sea water would literally have no impact on the flow at all, it wouldn't even touch it. Thanks for playing.
That's not how it works.



* images deleted due to lack of source info *
     
     
  #50  
Old Posted Oct 18, 2019, 8:37 PM
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^ I think you've really lost your marbles under NYC bootserism cause literally nothing you're saying/presenting is making sense.
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  #51  
Old Posted Oct 18, 2019, 8:39 PM
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wait, what?

do you honestly think that if the global ocean rises 216' that the great lakes would also rise 216'?

that's not how this works. that's not how any of this works.
It's simplified, but that's about how it works. Another factor would be temperature. But it's safe to say that if the polar ice caps have melted, the Great Lakes aren't freezing.
     
     
  #52  
Old Posted Oct 18, 2019, 8:42 PM
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Originally Posted by iheartthed View Post
It's simplified, but that's about how it works. .
no it's not.

i'm afraid you're out to lunch on this one.



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Originally Posted by iheartthed View Post
But it's safe to say that if the polar ice caps have melted, the Great Lakes aren't freezing.
and what happens when the great lakes don't freeze in the winter?

more evaporation and lower lake levels.

which is why some models show the great lakes evaporating away with more warming.
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Last edited by Steely Dan; Oct 18, 2019 at 8:55 PM.
     
     
  #53  
Old Posted Oct 18, 2019, 8:47 PM
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no it's not.

i'm afraid you're out to lunch on this one.




and what hepens when the great lakes don't freeze in the winter?

more evaporation and lower lake levels.

which is why some models show the great lakes evaporating away with more warming.
I don't think so. They didn't freeze last winter and parts of Detroit flooded for weeks.
     
     
  #54  
Old Posted Oct 18, 2019, 8:49 PM
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If weather patterns were to change and create an arid region or desert in the Great Lakes, then the cities wouldn't flood. If they become more tropical or stay the same then they would likely flood...
     
     
  #55  
Old Posted Oct 18, 2019, 8:50 PM
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Originally Posted by Steely Dan View Post
wait, what?

do you honestly think that if the global ocean rises 216' that the great lakes would also rise 216'?

that's not how this works. that's not how any of this works.


the truth of the matter is that climatologists aren't quite sure what global warming means for the great lakes.

some models show more water, other models say the lakes might dry up due to greater evaporation.

it's a big question mark at the moment, but the water level of the great lakes is divorced from that of the global ocean, at least in a direct sense.
Lake Ontario is ~243ft so it might see some rise if the St. Lawrence were to become tidal further upstream.
     
     
  #56  
Old Posted Oct 18, 2019, 8:50 PM
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I don't think so. They didn't freeze last winter and parts of Detroit flooded for weeks.
it's astounding that you're firmly standing by your ignorance on this one.

the great lakes did have higher than average freezes for the past two winters, and those freezes contributed to the higher lake levels this year.


source: https://www.glerl.noaa.gov/data/ice/historicalAnim/



source: https://www.glerl.noaa.gov/data/ice/historicalAnim/
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  #57  
Old Posted Oct 18, 2019, 8:54 PM
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it's astounding that you're firmly standing by your ignorance on this one.

the great lakes did have a good freeze the past 2 winters, and those freezes contributed to the higher lake levels this year.
Okay, they froze. Detroit also flooded. If there is more water in the system then Detroit will flood. There was more water in the system because of the rains.
     
     
  #58  
Old Posted Oct 18, 2019, 9:01 PM
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There was more water in the system because of the rains.
AND because there was greater than average ice cover the previous two winters, leading to less water being lost to evaporation.

great lakes water levels are determined by a complex system of water in from the drainage basin, water out through the chicago river and the st. lawrence out-flows, and of course water lost to evaporation. and the amount of evaporation the lakes experience is very complicated to determine and varies wildly from year to year, hence why it's impossible for anyone to really say with any kind of certainty what the prospect of climate change means for the great lakes.

but one thing is certain, a 216' ocean rise would in no way shape or form directly correlate with a 216' rise in the great lakes. that's just straight-up nonsense.

that's literally not how any of this works.




Quote:
It's uncertain how climate change will affect water levels in the Great Lakes, which already fluctuate periodically, the scientists said.

Warmer temperatures will produce less ice cover, boosting evaporation and pushing levels down.

However, they could rise in years with especially heavy precipitation and temporary deep freezes caused by southward migration of frigid polar air.
source: https://www.cbc.ca/news/canada/winds...ming-1.5065922


or in other words: no one really knows for certain what's gonna happen to great lakes water levels.
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Last edited by Steely Dan; Oct 18, 2019 at 10:16 PM.
     
     
  #59  
Old Posted Oct 18, 2019, 9:20 PM
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I don't think so. They didn't freeze last winter and parts of Detroit flooded for weeks.
Edit: Nevermind. Steely Dan addressed this.
     
     
  #60  
Old Posted Oct 18, 2019, 10:31 PM
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No, it was misleading in that it wasn't comparing apples to apples. It was comparing a random slice of metro LA and a random slice of metro NY.

And actually the article was correct, but the conclusion is meaningless. It isn't exactly surprising that a county in Southern CA grew faster than NYC + three Hudson Valley counties (two of them rural and essentially off limits to development) during the last 35 years.

That too, but I was more focusing on comparing the city of LA (3-4 million) to the city of NY (~8 million). If LA annexed cities that should honestly be under its belt anyway (ex. Santa Monica, Hollywood, much of South Central down to Long Beach and its surroundings), it could possibly reach or even exceed NYC’s population.
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