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Huge Arctic Ice Shelf Breaks Off
knarfling writes "CNN is reporting that a chunk of ice shelf nearly the size of Manhattan has broken away from Ellesmere Island in Canada's northern Arctic. Just last month 21 square miles of ice broke free from the Markham Ice Shelf. Scientists are saying that Ellesmere Island has now lost more than 10 times the ice that was predicted earlier this summer. How long before the fabled Northwest Passage is a reality?"
Because it is not reforming as ice. Over the last 100 years, pieces of the shelf would break off and then other ice would reform and take its place. But over the last few years, ice is breaking off and it is too warm for other ice to form into the shelf.
One of the effects is that fresh water environments were formed on the shelf. When the shelf breaks off, salt water rushes in and kills all the organisms that grew there. Some haven't been studied well, and the chance to study them has been lost.
Another affect is more political. If enough ice breaks off, there will be a NorthWest passage where ships can sail around the North of Canada.
On July 30 of this year, scientists predicted that a chuck of ice would break off. The chunk that actually broke off was 10 times the size predicted. Not sure why the big difference, but that is a bit scary to me. What is it that these scientists missed? Were temperatures warmer than expected? or did they just make a bad judgement with the info they had?
Great civilizations have lived and died on false theories. Don't mess up mine with a few facts.
The climate change proponents will probably try to make a bigger deal out of this than it really is. I take the stance that I'm not educated enough on Earth's climate to have a valid opinion on climate change, but I do find it strange that they never mention the tropics have been colder than usual these past few years. I live in Mackay, Queensland, and this year's winter was probably the coldest I've seen here (though I have only been here eight years).
You aren't educated enough. The climate models call for more extreme climate shifts both colder and warmer with the over all average being warmer. Also the tropics change the least and the Arctic regions change the most. The models have been around for years and so far the biggest errors have been underestimating the rate of change. There will be years when the changes will reverse simply due to yearly variations it's the general trend that has changed. Saying you had a colder winter so global warming is wrong is like saying it's warmer in August so winter cooling is a myth. Weather patterns are measured decades, hundreds of years and thousands of years not months and years. Yearly changes are meaningless when talking about long range trends.
Normally I don't reply to people who reply to my comments, but I really must know:
Why in the world would you start your quest to prove me wrong on a corrolary point by quoting an article about a man-made structure constructed some 2 million years after the geologic event I was referring to?
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From http://thetyee.ca/Views/2006/01/30/DefendNorthwestPassage/:
If the US resumes that path, and there's no evidence they will right now, it'll lead to a fundamental change is the perceived "special relationship" between Canada and the US. Americans would be surprised at the change in attitude that would result.
However, I believe things are quite a bit different now compared to 1969. We have Russia making macho territorial claims all over the place and Canada (plus Denmark) are in the best position to legally defeat those claims, not the US.
Also, there might be some recognition in Washington that treating the NWP as the high seas could easily result in an environmental mess of biblical proportions because, for example, dumped oily bilge water in the cold Arctic water doesn't disperse like it does in warmer climates. A large oil spill up there would be an unmitigated disaster.
Finally one would assume the US would like to know, via Canadian tracking of ships in it's territorial waters, who's going where. Canada would have some rights to actually board and inspect ships which is much superior to what the US could find out if the passage was international waters in which case they would be limited to satellite, radar, or airborne tracking.
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