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Arctic warming goes with the floe
11-05-2009, 08:08 AM (This post was last modified: 11-05-2009 08:09 AM by kobayashi.)
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Arctic warming goes with the floe
From http://wattsupwiththat.com

Arctic warming goes with the floe

4 11 2009
Past Arctic Warming Also Created by Currents
Guest posted by Jeff Id of The Air Vent
[Image: teachers_factfile_polar.jpg]

The bear is fine, don't freak out. Image: Met Office UK



I’ve stated here on several occasions that the ‘Recent’ Arctic ice thinning is more likely a current change issue rather than a temperature issue. Differences in flow change the transfer of vastly more energy than a couple of degrees of air temp, however changing air temperatures are a strong indicator of differences in regional water flow. This effect is very visible in the arctic ice videos posted here. Recently Dr. Arnd Bernaerts asked by email that I call attention to his paper on Arctic Warming for a period we don’t hear about enough. He has a shorter version link which he also gave here. I really enjoy the historic discussions of climate and the paper is quite readable so I’ve put the whole paper up instead.
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The Circumstances of the Arctic Warming in the early 20th Century
Author: Arnd Bernaerts [Image: DE.png]
Dr. Arnd Bernaerts
Hamburg, Germany
Abstract
The Arctic has a crucial role in the world’s climatic system, and global warming may have an amplifying effect. The recently observed thinning of the sea ice has alerted scientists and policy makers alike. That was quite different when a similar warming occurred 90 years ago, which is still regarded as one of the most puzzling climatic event during the last century. That needs not to be, if the situation is being viewed from on oceanic perspective, together with the fact that the winter air temperatures in the higher Northern Hemisphere are greatly influenced by the ocean, particularly in the North Atlantic, which is partly free of sea ice up to the Fram Strait. Here also ends the West Spitsbergen Current, a current which supplies the Arctic Ocean with warm and saline Atlantic water. Already back in 1920s air temperature observation showed a strong warming at Spitsbergen during the winter season. By analyzing the winter temperature profile of five coastal stations it can be demonstrated that the climatic shift at the end of the 1910s had been closest to Spitsbergen, allowing the conclusion that circumstances related to the West Spitsbergen Current have caused the early Arctic warming almost a century ago.

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