northwest Arctic Report Card 2016
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australian electronic gold prospecting forum.com  |  Off topic  |  Off topic  |  Climate change  |  Topic: Arctic Report Card 2016 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Arctic Report Card 2016  (Read 47 times)
Doug
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« on: Sunday January 15 2017 10:02:30 AEDT AM »

Highlights
The average surface air temperature for the year ending September 2016 is by far the highest since 1900, and new monthly record highs were recorded for January, February, October and November 2016.
After only modest changes from 2013-2015, minimum sea ice extent at the end of summer 2016 tied with 2007 for the second lowest in the satellite record, which started in 1979.
Spring snow cover extent in the North American Arctic was the lowest in the satellite record, which started in 1967.
In 37 years of Greenland ice sheet observations, only one year had earlier onset of spring melting than 2016.
The Arctic Ocean is especially prone to ocean acidification, due to water temperatures that are colder than those further south.  The short Arctic food chain leaves Arctic marine ecosystems vulnerable to ocean acidification events.
Thawing permafrost releases carbon into the atmosphere, whereas greening tundra absorbs atmospheric carbon.  Overall, tundra is presently releasing net carbon into the atmosphere.
Small Arctic mammals, such as shrews, and their parasites, serve as indicators for present and historical environmental variability. Newly acquired parasites indicate northward shifts of sub-Arctic species and increases in Arctic biodiversity.
  
  
link-https://www.youtube.com/watch?v=G0rp6-BEur8
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