We are currently in a warm AMO, which is the cause of the melting over the past 20 years or so, but once it changes to a cold AMO, the ice will thicken again. Go look for a graph of the corelation between the phases of the AMO and the Arctic ice melt and tell me what you find. A temperature departure of -35 in the winter to -25 (ten degrees above normal which it has not actually happened on a smoothed graph) will have very little effect on ice changing. However warm water coming into the arctic (caused by the warm AMO) eroding the ice from beneath is the real culprit. The summer melt season temperatures have consistently been at, slightly above or slightly below freezing or close to normal and this is when the actual melting occurs. If the temps are the same in the melt season as previously and the ice is decreasing in area and extent, why is that? You want to blame everything on CO2 increasing yet there is very little difference in temperature over the melt seasons. Obviously there are other factors much more such as warmer water, unusual pressure patterns, green algae, strong winds etc.
As for Greenland, the press made a big deal of an 11 billion ton ice melt in just one day in July of 2018 but don't even mention that in November there was a 12 billion ton ice mass increase in just one day. Over the past 40 years, the average per year loss of ice has averaged 103 billion tons per year. Sounds awful doesn't it? So let us assume that continues at a 110 billion per year rate and ask how long would it take to erase HALF (not all) of the ice sheet on Greenland? It would take approximately 12,500 years to do this. Moral of the story is there is little danger Miami, Philly, New York etc... are going to be under water anytime soon.
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