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michael · super moderator Joined: 13 Oct 2007 Posts: 981

The world's sea levels could rise twice as high this century as UN climate scientists have previously predicted, according to a study.
The Intergovernmental Panel on Climate Change proposes a maximum sea level rise of 81cm (32in) this century.

But in the journal Nature Geoscience, researchers say the true maximum could be about twice that: 163cm (64in).

They looked at what happened more than 100,000 years ago - the last time Earth was this warm..

Sea level rise is a key effect of global climate change. There are two major contributory effects: expansion of sea water as the oceans warm, and the melting of ice over land.

In the latest study, researchers came up with their estimates by looking at the so-called interglacial period, some 124,000 to 119,000 years ago, when Earth's climate was warmer than it is now due to a different configuration of the planet's orbit around the Sun.

That was the last time sea levels reached up to 6m (20ft) above where they are now, fuelled by the melting of ice sheets that covered Greenland and Antarctica.

So if the earth was this warm 100,000 years ago, how can they possibly blame it on humans? Wouldn't it be more cyclical unless humans were more advanced and had a means of creating climate changes back then, as now? All very puzzling allt he hype.

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GardenTalker · Posted: Thu Jan 03, 2008 4:13 pm Post subject:

I'm putting this in the same thread rather than a new one. I've always said that climate change is as much or more due to nature than man.

http://www.ottawasun.com/News/National/2008/01/03/4750071-sun.html

Thu, January 3, 2008
Global warming not only culprit in Arctic thaw: Study By AP

WASHINGTON -- A new study suggests there's more to the recent dramatic and alarming thawing of the Arctic region than can be explained by man-made global warming alone.

Nature may also be pushing the Arctic to the edge.

A study being published in the journal Nature says there's a natural cause that may account for much of the Arctic warming, which has melted sea ice, ice sheets and glaciers.

New research points a finger at a natural and cyclical increase in the amount of energy in the atmosphere that moves from south to north around the Arctic Circle.

But scientists say that energy transfer, which comes with storms that head north because of ocean currents, is not acting alone either cont...