just so suave said:
Have you ever frozen a bottle of water, or any other liquid? What happens you ask? The water expands as it freezes, taking up more space as ice than the water did, mis-shaping the bottle. As the ice melts, it reduces in size and is no longer pushing against the roof of the bottle. When you apply this to the Ocean and the glaciers, you realise that the glaciers take up more space as ice, than they would as water, so when they melt the sea levels will not rise, but remain the same, or possibly lower
.
That's a bit off... Sure ice does take more volume, but at the poles, change it to water and it will move that to the sea. Now if the ice is already in the water than the volume lost versus and thus displacement reduce would offset any new water entered into the ocean. The real problem is then the ice that is not already displacing water which would be the ice on Greenland and Antartica as it is on land and not in water.
Just to put this out, anyone notice that SoSuave is heavily biased against anything popular saying it is the stupidity of the masses? Ok, maybe not, but this thread is heavily doubting global warming and so on.
If you look at the data, the average global temperature have went up. The real alarm is when looking that it does correlates closely with carbon dioxide in the air and it is spiking far faster than history have recorded. That is why it is taken so seriously. If you look at the structure of carbon dioxide and see how it holds energy, it become much more understandable why it is worrisome.
Now before you all bash me. I do agree that I do suspect global warming is not as bad as the media makes it, but I also aware that many scientist never made the claim it as disaterous as the media makes it either. Remember that the media loves to sensationalize making it sound like the end of the world is comming. More likely, and if you take the time to talk to most scientists, they are not worried by the end of the world of the runaway greenhouse leading to Earth to become Venus, but the more likely the possible unknown effect of the changes. A little change can bring large effects from the counter-intuitive (more snow) or the what the media like to imagine (more hurricanes). It is now the dange of doomsday but the danger that it will bring damaging and irreversable change that would be against our interests.
BTW which is more likely to conspire, oil companies with a vested interests in more profits or a carbon tax which there are much easier ways then spending 50 years to brainwash us?
Also to Keto -- The historical fact of the warmer Earth of the millions of years ago is not the problem, scientists is more worried about the speed of the change.
My opinion that it is not that dire, but it doesn't mean it is not time to find energy sources that is cleaner, sustainable, and longer lasting.
