Thank you for pointing out that Arctic Ice Pack records only go back to 1979 and the brief, yet understandable explaination of the AO and other factors that control that region.
It also begs to be said that we do not have a long enough span of data to determine any Arctic ice trends. Typically, more than 50 years of data is needed before anyone will even start guessing at a trend.
Are you sure that years of Arctic Ice depth records are not sitting next to your triple top secret weather forecasting formula? I mean your group has thought of everything, literally, for hundreds of years. I say this with due all love and respect.