PILOT SPIN
Spin Zone => Spin Zone => Topic started by: Jaybird180 on September 06, 2017, 11:01:42 AM
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I'm reading an article about global warming's effect on the polar region (not expressing an opinion on the topic right now). According to the article, the temperature of the Permafrost has risen by 10 degrees Farenheight.
“In the 1980s, the temperature of permafrost in Alaska, Russia and other Arctic regions averaged to be almost 18°F,” the U.S. Geological Survey explained in 2015. “Now the average is just over 28°F.”
I'm looking for scientific education, as I thought that at 28 degrees, water is still called ice. Is ice at 18F harder than ice at 28F?
Reluctantly, (http://www.msn.com/en-us/news/weather/melting-permafrost-in-the-arctic-is-unlocking-diseases-and-warping-the-landscape/ar-AArogFH?li=BBmkt5R&ocid=ientp) is the link to the article[/url]. I hope to get my answer before you guys pick it apart.
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Ice does get harder as the temperature gets lower. It also sublimates (goes directly from solid to gas) at a greater rate at higher temperatures that are still below the melting point. That's the technical aspects as I recall them.
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From what I recall of the chart, for sublimation one must reduce the pressure to levels that wouldn't be seen in this setting. In flight, sublimation occurs, of course.
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Yet another "global warming sightseeing ship" got STUCK in the ICE, because there was too much ice where they didn't expect in the Artic. Meanwhile, the ice is growing in the Antarctic.
http://www.breitbart.com/big-government/2017/06/13/delingpole-ship-of-fools-iii-global-warming-study-cancelled-because-of-unprecedented-ice/