Are you sure that graph you linked is right? I mean It seems to go against most peer reviewed studies and the ice is melting at the moment. as far as I am aware ice melts when its warm, and glaciers are melting that survived the medieval warm period so either the ice has changed properties in the last few hundred years or the graphs you linked are not accurate. I personally would go with the mainstream reconstructions appearing on Wikipedia and national geographic rather then climate4you but that's just me.
Statistics: Posted by spot1234 — Sun Sep 30, 2012 12:36 pm
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Logically these Oscillations are always affecting the ice, and we do see levels increasing and decreasing but why is it only in the modern period we see this massive unprecedented drop off in ice extent? I don't think you need to be a supergenius and spent years researching to answer this question, a secondary school education should suffice.
Statistics: Posted by spot1234 — Sun Sep 30, 2012 11:33 am
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http://tamino.wordpress.com/2012/09/20/ ... #more-5650
I think the assertion that the sea ice loss we are currently seeing is due primarily to some poorly understood oceanic oscillation is not mainstream science. The fact is we are changing the property's of the atmosphere by adding greenhouse gases to it, that is mainstream science. To imagine that there will be no consequences seems naive or wishful thinking.
Some graphs to help people visualize whats happening at both poles;
However this thread is about the effect that the changes in the arctic are having on the weather in the more populated regions of the world, I think that we are already seeing them.
Statistics: Posted by spot1234 — Sun Sep 30, 2012 6:04 am
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I think that the two may be connected.
Take a look at this graphic from back in 1990.
Notice that when the Northern Hemisphere had a low Sea Ice Extent back in 1975, the Southern Hemisphere was at record highs. The Northern Hemispheric Sea Ice then increased while the Southern Hemispheric Sea Ice declined sharply. The Southern Hemispheric Sea Ice then gradually increased ever since, and the Northern Hemisphere decreased ever since.
The two variables changed dramatically during a short time, an indicator of a non-linear system changing from one state to another. The change in Sea Ice at the poles occured roughly during the time the PDO switched from it's negative to positive state, suggesting that the PDO plays a role in the Arctic Sea Ice melt and Antarctic Sea Ice growth. Oceanic Currents may explain 51% of the variation, as the r^2 value for the two variables (Arctic and Antarctic Sea Ice Extent Anomalies since 1979) is -0.51.
The chart above comes from Steven Goddard. NEVER have I praised Steven Goddard. I think that he is a lying, deceptive, and manipulative individual. However, the calculated correlations are definitely interesting, and indicate a moderate correlation does exist with the poles.
The data for the Arctic and Antarctic Sea Ice Extent Anomalies that he used in the above graph can be viewed and respectively.
Statistics: Posted by Snowy123 — Sat Sep 29, 2012 5:27 pm
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