Back on April 2nd, it looked like Arctic Sea ice extent at NSIDC would cross the “normal” line. See: Arctic Sea Ice Extent Update: still growing
The image then looked like this:
Now before anyone starts trotting out claims of “adjustments”, I’ll point out that the independent JAXA data set, done with a different satellite and the AMSR-E sensor shows the same thing:
Note the area I’ve highlighted inside the box. Here is that area magnified below:
The NSIDC presentation is zoomed to show the current period of interest, whereas the JAXA presentation shows the entire annual cycle. So we notice small changes in NSIDC more often. Also, the NSIDC presentation is a running 5 day average according to Dr. Walt Meier.
Of course whether you are scientist, scholar, layman, casual observer, or zealot, nature never gives a care as to what we might expect it to do.
So worry not, no skullduggery is afoot. Nature is just laughing at all of us.