This image shows the Arctic as observed by the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) aboard NASA’s Aqua satellite on September 16, 2007. The image shows a record sea ice minimum in the Arctic. (Photo credit: Wikipedia) |
So the earth warms up due to green house gases. That melts ice. One place that happens is the Arctic. Used to be land and ice were connected all through the year. Now in summer there is enough melt that you can navigate around the Arctic. Well, that has implications. Now the super cold winds in the North have more room to play. And they come way South.
And so you get more turbulent summers (like Sandy hitting NYC) and colder winters. Global warming actually means more cold. Go figure.