This is a good recovery of sea ice extant this year. Unfortunately, it is only single year ice. This extent of the ice melt this summer will determine if we have actually seen any recovery of ice. But even this little is a good thing.
We will see what the melt is this summer, and what the clathrates do off the East Siberian Artic Shelf. We need a low melt, and a much lower outgassing than last year. We get a high melt, and an increase in that outgassing, then this winters freeze simply was an anolomy from a double La Nina.
Geee, I wonder what it was like way back in 1959???? Why, looky here! Here is a recollection from a sailor on the USS Skate which surfaced at the North Pole on multiple occasions from 1958 to 1959.
“the Skate found open water both in the summer and following winter. We surfaced near the North Pole in the winter through thin ice less than 2 feet thick. The ice moves from Alaska to Iceland and the wind and tides causes open water as the ice breaks up. The Ice at the polar ice cap is an average of 6-8 feet thick, but with the wind and tides the ice will crack and open into large polynyas (areas of open water), these areas will refreeze over with thin ice. We had sonar equipment that would find these open or thin areas to come up through, thus limiting any damage to the submarine. The ice would also close in and cover these areas crushing together making large ice ridges both above and below the water. We came up through a very large opening in 1958 that was 1/2 mile long and 200 yards wide. The wind came up and closed the opening within 2 hours. On both trips we were able to find open water. We were not able to surface through ice thicker than 3 feet.”
- Hester, James E., Personal email communication, December 2000"
NASA and multi-year Arctic ice and historical context | .....Aaron's EnvironMental Corner.....