As far as temperatures drop in the Arctic winter – on average to -34°C (-29°F) – a new study shows that in the last two years sea ice is shrinking on the surface of Arctic waters to record low levels. Using satellite data, scientists have observed unusually warm wintertime temperatures in the region and a resulting decline in the length of the Arctic ice season.  Nasa Story Here.

Summer sea ice also has dramatically melted and shrunk over the years, setting a record low last year. This year's measurements are not as bad, but will be close to the record, Serreze said.

Equally disturbing is a large mass of water - melted sea ice - in the interior of a giant patch of ice north of Alaska, Serreze said. It's called a polynya, and while those show up from time to time, this one is large - about the size of the state of Maryland - and in an unexpected place.

"I for one, after having studied this for 20 years, have never seen anything like this before," Serreze said.     Story here.