E.g., The record high fall temperatures cause the water temperature to rise.
The sea ice melts.
The Arctic ocean becomes less salty.
Reindeer herds are apparently in decline (“Santa - with only 68 shopping days to go before Christmas!”)
As well as the above problems (‘largely a result of human activities adding carbon dioxide and other heat-trapping gases to the atmosphere’ - link to news article) there is another big problem to consider.

This from The London Free Press:
Rising temperatures help melt the ice, which in turn allows more solar heating of the ocean.
So, as the ice disappears the warming trend occurs faster.
I think climate instability and global warming are occurring fast enough already.
And on a related note re ‘other heat-trapping gases’ and climate instability, this from The Little Green Handbook (see Read This in margin):
“...we release so many pollutants into the atmosphere. For instance, a mysterious new pollutant (trifluoromethyl sulphur pentaflouride) has been identified recently that turns out to be 18,000 times more efficient in trapping solar energy than carbon dioxide. This pollutant has a long lifetime.”
Isn't that another problem too?
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