The only data I have is Jaxa's .CSV files on daily measures of Arctic and Antarctic sea ice extent. They are easily downloaded - I use Jaxa's version 1 as I find it easier to use for the very simple things I do (environmental arithmetic as opposed to real maths). The address is https://ads.nipr.ac.jp/vishop.ver1/vishop-extent.html?N
So I simply observe that Antarctic sea ice has been several standard deviations below the average in the satellite record for some time. Methinks I was taught by my statistics tutor that the greater that deviation then the less likely it is that the observations were random chance. Which is why I still think keeping an eye on what's going on down south is of value.
But what were the causes of such massive variations from the "norm" ?
And what has been the effect on sea ice shelves exposed to open ocean in a way they have not been for a good many years?
And isn't it strange that we find that we know least about that which we find we need to know most? (Antarctica, the Oceans)