Incase you missed it: Most of Greenland melted in July.

petros

petros

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beaker said:
You are really having trouble with this aren't you. Wow... An ocean facing slope under a land based glacier, would be one that has its start in the mountains, or just on high ground if you prefer, and the glacier travels down that slope towards that ocean. Its frontal face would then be towards the ocean. Thus an ocean facing slope. How ya doing so far?
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Now it's a glacier and not an ice sheet?
 
Bar Sinister

Bar Sinister

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JLM said:
Yep- like the ice cube in your glass of water, but within a short time it all comes back to room temperature. Even if every iota of ice in Greenland thawed I doubt if it would lower the temperature of the Atlantic Ocean 1/2 a degree- probably more like 0.01 degree as the Atlantic is a cold ocean to start with.
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You are probably correct about the eventual warming. But when glacial Lake Agassiz dumped billions of tons of water into the Atlantic some 13,000 years ago it is estimated to have taken several hundred years for the earth to warm up again. This was not caused by the lowering of the Atlantic, but a change in its salinity which disrupted the Atlantic conveyer. It probably had only a marginal effect on humanity at that point simply because there were so few humans. Today would be a different matter. The problem is when you start screwing around with climate you never quite know where it will end.
 
taxslave

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beaker said:
More info from the same wunderground website. Anb excellant site, gives good weather too.

Greenland | Weather Underground

"The Greenland ice sheet covers roughly 85% of the land surface of the island and rises to an average height of 2.3 km (1.6 miles). The immense weight of the ice sheet has pushed the center of the island roughly 300 meters (1000 ft) below sea level. The icy expanse of Greenland, like the rest of the Arctic, not only represents an important climatological indicator, it also is critical to future global climate. Were all of Greenland's ice to melt, global sea level would rise 7 meters (23 feet). Greenland's ice sheet is slowly melting due to warming temperatures, and there is great concern that this melting will accelerate and contribute to sea level rise of several feet later this century."

"Warming temperatures in Greenland and the Arctic will also affect the global climate. The greater the difference in temperature between two places, the faster the heat moves from the warmer to the colder region. As the polar regions become warmer, the temperature difference between the equator and the poles shrinks, making equatorial heat move much more slowly to the poles. However, the flow of heat through the atmosphere from the equator to the poles is what powers global atmospheric circulation. If that flow changes, the path of the jet stream will also be altered, resulting in new storm tracks and precipitation patterns. While some regions will benefit from more favorable rains, others will experience increased drought and water availability problems."
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Better rethink that one. It is highly unlikely that the glacier pushed the center of Greenland down unless there is a bottomless pit right to the earth's core. More likely the glacier filled in an inland sea over time.
 
petros

petros

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taxslave said:
Better rethink that one. It is highly unlikely that the glacier pushed the center of Greenland down unless there is a bottomless pit right to the earth's core. More likely the glacier filled in an inland sea over time.
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Isostasy is real. Ever mountain is as deep as it is high.
 
EagleSmack

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Bar Sinister said:
You are probably correct about the eventual warming. But when glacial Lake Agassiz dumped billions of tons of water into the Atlantic some 13,000 years ago it is estimated to have taken several hundred years for the earth to warm up again. This was not caused by the lowering of the Atlantic, but a change in its salinity which disrupted the Atlantic conveyer. It probably had only a marginal effect on humanity at that point simply because there were so few humans. Today would be a different matter. The problem is when you start screwing around with climate you never quite know where it will end.
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Did man cause that?
 
B00Mer

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Cabbagesandking said:
Is this America's future?

The biggest news story of our dystopian future | Grist
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lol love that site.. hehe

 
Praxius

Praxius

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B00Mer said:
Ice cores from Summit station [Greenland’s coldest and highest] show that melting events of this type occur about once every 150 years on average. With the last one happening in 1889, this event is right on time," said Lora Koenig, a Goddard glaciologist and a member of the research team analyzing the satellite data.

Read more: Skeptics put the freeze on NASA 'hot air' about Greenland ice | Fox News

Interesting news nonetheless..
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Yeah you got to love how these Global Warming Denier Deniers continually omit the data from glacier ice cores that store information dating thousands and thousands of years.... and then act like the moment something like this happens, it's the very first time it's ever happened and we're all doomed.
 
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