Why in physics class are we taught that when an ice cube melts in a glass of water it doesn’t raise the level of the water yet the global warming crowd says that icebergs melting will drastically raise the sea level?
Melting ice cubes don’t raise the level in a glass because both the ice and the water are the same fresh water. Sea ice is fresher than sea water, and icebergs become fresher the longer they remain afloat. As should be obvious, floating ice displaces its own weight in the water supporting it—but because salt water is slightly denser than fresh water, once floating ice melts, the fresh water it melts into takes up slightly more space than the salt water that was supporting it—and the sea level rises—a bit.
The “global warming crowd” is well aware, however, that if all the sea ice in the world were to melt, it would only raise sea levels by a few millimeters.
It’s the melting of land based ice sheets that will raise the sea levels, not that of icebergs already in the water melting. I’m not sure there are any decent models for how fast this is likely to occur in this century, since every decade the models get revised to speed up predictions, but it’s easy enough to reference what kind of sea level rise we are talking about.
The short version: if all the ice melted on Greenland alone that would raise sea levels by 7 meters; if all the ice on Antarctica melted that would raise sea levels by 57 meters. Coastal cities are going to face huge problems related to rising sea levels in this century, just not on that scale. How much, no one really knows. Not that it’s likely to happen any time soon.
One would assume if this threat was real, the global elites would not be buying properties at Marthas Vineyard,
https://nypost.com/2019/08/22/barack-and-michelle-obama-are-buying-15m-estate-in-marthas-vineyard/
Read an article the other day where the Alarmist scientists are claiming that a warming climate causes the oceans to “swell” causing rising levels.
https://www.theguardian.com/environment/2016/jan/26/sea-level-rise-from-ocean-warming-underestimated-scientists-say.
Utter bullshit, expect more of it as their claims are debunked and they get increasingly desperate to keep the trough full.
Antarctica- 40 below zero. Ice does not melt at that temperature no matter how hard the leftie freaks wish it would.
Antarctica is classified as a desert, the rainfall down there is incredibly low by any sub saharan measure. If climate change leads to increased rainfall in the Arctic and Antarctic regions, then it is possible that more ice will lay down on land, and the sea levels will begin to recede.
Mother nature works in devious ways !
What we need to do is dig more canals!
Dig a hole fill with water, move on!
Every time you fill with water, the sea goes down, easy!
Climate warming, does not matter as the sea is running into the holes and not raising!
I should have been a greenie mp! Ain’t I more clever than them!
If everyone who visited the seaside took home a couple of bottles of seawater, then the problem would sort itself
I heard recently that it is estimated it would take 120,000 years for Antarctica to become ice-free.