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Louisiana1976 Donating Member (1000+ posts) Send PM | Profile | Ignore Sat Jan-02-10 02:40 PM
Original message
Antarctica is melting
snip

Both poles are warming much faster than the average global warming so that while we sit here complaining about the cold where we live now what we ought to be doing is enjoying it while it lasts. Once water no longer exists in its solid crysililine state there is going to be a lot of other stuff that no longer exists, probably including us.

snip

http://www.dailykos.com/story/2010/1/2/821303/-Antarctica-is-melting
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GreenStormCloud Donating Member (1000+ posts) Send PM | Profile | Ignore Sat Jan-02-10 02:45 PM
Response to Original message
1. And what is the temperature on land in Antarctica?
Has ice started melting at 0 degrees now, instead of 32?

Global Warming is real, and the consquenses are real, but hype doesn't help the cause. If it ever gets warm enough to melt the South Polar Ice cap, then we will already be dead. The Antartic land ice temperatures are still waaaay below freezing.

Floating ice is a different story.
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dipsydoodle Donating Member (1000+ posts) Send PM | Profile | Ignore Sat Jan-02-10 02:55 PM
Response to Reply #1
2. Average temperature there is -50°C (-58°F)
No idea of at what temperature ice forms there. Most of it is well above sea level and no idea of average humidity both of which affect that.
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guardian Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Jan-03-10 12:45 PM
Response to Reply #1
4. Oh no. Go ahead and "hype" away
Why are you challenging settled science? You must be a knuckle-dragging, mouth-breathing, flat-earther if you challenge the concept that ice will melt at 0 degrees F.


DOOM DOOM DOOM.
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eppur_se_muova Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Jan-03-10 04:35 PM
Response to Reply #1
6. 0 degrees Celsius, yes. Always has. ;^) nt
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bhikkhu Donating Member (1000+ posts) Send PM | Profile | Ignore Sat Jan-02-10 02:58 PM
Response to Original message
3. Antarctic is "warming" or "drying" would be more accurate
As the article lists a 6.5C average temperature increase, that would be warming.

...but the average is still below freezing, so surface melting isn't so much the issue. The continent is more or less covered with glacial ice, however, which relentlessly flows to the sea. One things that causes an overall decrease in ice mass is a drop in the precipitation that replenishes the ice mass - less snowfall, meaning "dryer" weather. Another is the deterioration of the ice shelves that more or less dam up the flows at the ocean. Ice shelf loss leads to faster glacial flows and a decrease in ice mass.
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BeFree Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Jan-03-10 01:09 PM
Response to Reply #3
5. Right
It isn't that the land is above freezing, it is that where the ice edges meet the warming oceans that the ice is melting. Because of less precipitation the ice amounts are decreasing. When ice is decreasing it means the oceans are increasing, leading to sea level rises.

A tech fix (not possible?) is to pump water into the middle of the polar regions thereby rebuilding the ice pack faster than it can melt at the edges?
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