An early winter storm broke the ice in the Chukchi Sea up into chunks of a size which microwave sensors are missing, so the alarmist community goes full stupid over their own defective measurements.
Summer temperatures north of 80N have been running below the long term mean for many years, and the ice there is several metres thick. How could anyone be daft enough to predict an ice-free Arctic?
There is plenty of ice up there, but your methodology and thought process is broken, Mark Serreze
Your own web site says that you miss a large percentage of the summer ice.
“NIC charts are produced through the analyses of available in situ, remote sensing, and model data sources. They are generated primarily for mission planning and safety of navigation. NIC charts generally show more ice than do passive microwave derived sea ice concentrations, particularly in the summer when passive microwave algorithms tend to underestimate ice concentration. The record of sea ice concentration from the NIC series is believed to be more accurate than that from passive microwave sensors, especially from the mid-1990s on (see references at the end of this documentation), but it lacks the consistency of some passive microwave time series.”