Global Warming

[bomelia]

Got to thinking about it today. What do you think will happen to the sealevel if the the Arctic Polar ice cap melts?

Mike

[Sharroll Celby]

The sea level would probably rise. How much depends on how much water is actually in the ice cap(s).

I doubt that Florida would disappear, but would probably lose some square miles of land.

[4RE KLR]

Well if we pump it all into death valley we could add another ocean and save the world.

See, problem solved. LOL

I think we better get life jackets.

[smokedmustang]

Google 12/21/2012 or look up "singularity", decline in bee populations. that should be enough for you to chew on, without thinking about global warming. Interesting stuff.

http://badlydrawnboysite.blogspot.co...12012-end.html

[Scott S]

The arctic ice cap is for the most part sitting on seawater therefore it is floating.

Put a ice cube in a tumbler half full of water and mark the side of the glass, wait for the ice cube to melt and then check the mark. No change....

For some reason when discussing global warming critical thinking skills are abandoned.

Scott S

[Cobrabill]

Scott-stop wit da logic-would ya?

[VRM]

Originally Posted by Scott S

The arctic ice cap is for the most part sitting on seawater therefore it is floating.

Put a ice cube in a tumbler half full of water and mark the side of the glass, wait for the ice cube to melt and then check the mark. No change....

For some reason when discussing global warming critical thinking skills are abandoned.

Scott S

Wrong Scott - the water level in the glass would rise by the volume of ice above the water level minus up to 20%, divided by the surface area of that water level.
The % is because of the differences in densities of water and ice. Ice density will vary with temp.

Just because you don't have the precision to measure something does not mean that it is not happening.

Steve

[HI Cobra]

The major cause of all this "global warming" is from the increase in hot air
from all our glorious politicians.

[Scott S]

Originally Posted by VRM

Just because you don't have the precision to measure something does not mean that it is not happening.

Steve

Go add some ice to your Kool-Aid and check it out...

Scott S

[Wayne Maybury]

The arctic ice is on top of water but the anarctic ice is on top of a land mass and it is several miles thick. I think that I saw an estimate that sea levels would rise by 8 feet if all of the ice at the 2 poles were to melt. That would put many costal areas under water.

Wayne

[BeanCounter]

Hardly 8 feet.

When ice on land slides into the ocean, it displaces ocean water and causes sea level to rise. People believe that when this floating ice melts, water level doesn’t rise an additional amount because the freshwater ice displaces the same volume of water as it would contribute once it melts. Similarly, people also think that when ocean water freezes to form sea ice and then melts, the water is merely going through a change of state, so it won’t affect sea level. However, in a visit to NSIDC in May, Dr. Peter Noerdlinger, a professor at St. Mary’s University in Nova Scotia, Canada, suggested otherwise.
In a paper titled "The Melting of Floating Ice will Raise the Ocean Level" submitted to Geophysical Journal International, Noerdlinger demonstrates that melt water from sea ice and floating ice shelves could add 2.6% more water to the ocean than the water displaced by the ice, or the equivalent of approximately 4 centimeters (1.57 inches) of sea-level rise.

The common misconception that floating ice won’t increase sea level when it melts occurs because the difference in density between fresh water and salt water is not taken into consideration. Archimedes’ Principle states that an object immersed in a fluid is buoyed up by a force equal to the weight of the fluid it displaces. However, Noerdlinger notes that because freshwater is not as dense as saltwater, freshwater actually has greater volume than an equivalent weight of saltwater. Thus, when freshwater ice melts in the ocean, it contributes a greater volume of melt water than it originally displaced.

Luckily it's not near enough to drive all of the uber liberal rats from the coasts to the livable habitats here in the interior.

Rats how do you cite things properly?????

[J. T. Toad]

Actually,
it will lower.

Go melt it, you'll see.

[392cobra]

Can't say as how I've ever seen extra full glasses of Iced Tea overflow at a picnic.

[VRM]

Roughly 11.11% of an ice cube will be above the water level. This part of the ice is not displacing any of the water it is floating in.

This means that if you have a 100 litre ice cube (ok, really big drink!), then 11.11 litres of that ice cube will be floating above the level of the water.

Ice generally has a volume 9% greater than that of water, so roughly 1 litre of volume will be lost when the ice above the water level melts. Also roughly 8 litres of volume will be lost whn the ice below the water level melts. This leaves you with 2.11 litres of water to raise the level of your glass.

Steve

[VRM]

Originally Posted by 392cobra

Can't say as how I've ever seen extra full glasses of Iced Tea overflow at a picnic.

If you have a bunch of ice cube in a glass, then some will most likely be fully submerged. The loss of that 9% of volume will most likely reduce the water level in the glass more than the tops of one or two cubes above the water level of the drink will increase it.

Steve

[Scott S]

Noerdlinger demonstrates that melt water from sea ice and floating ice shelves could add 2.6% more water to the ocean than the water displaced by the ice, or the equivalent of approximately 4 centimeters (1.57 inches) of sea-level rise.

That would be an easy fix, lets go pump all of the oil from under the arctic ice and hope the sea floor collapses enough to make room for the minuscule amount of extra water that may come along.

Scott S

[392cobra]

Seeing as how it is global warming that is suppose to cause all this melting,won't the extra heat also cause more evaporation ? Maybe 2.11% worth ?

[J. T. Toad]

as salinity decreases, evaporation increases.

but everything is relative is the ocean going up? OR could the land going down?

Land Subsidence from ground water pumping.

http://www.fresnobee.com/263/v-print...ory/43270.html

considering population increases, who cares about 8 feet when areas have already lost 30 feet.

[VRM]

Well, back to Mikes question... (welcome back, BTW - you seem to have been missing for a while)

If the Arctic melted the sea level would rise a negligible ammount.

Based on some reading if the ice on Greenland and Antarctica were to all melt it would raise sea level by about 200 feet.

Greenland and the West Antarctic ice sheet each contain enough ice to raise the sea level by about 15-20 feet.

The numbers are not mine, but I have not yet found anything to refute them.

Steve

[VRM]

Originally Posted by 392cobra

Seeing as how it is global warming that is suppose to cause all this melting,won't the extra heat also cause more evaporation ? Maybe 2.11% worth ?

You probably don't have this problem, but I would really rather not have my summers any more humid than they already are.

Steve