Its October, the time when the September Sea Ice Extent (SIE) map is published. This is the important one; the map that gives us the best averaged representation of the data for September, the month that has the least sea ice. By comparing that value with previous Septembers we can get a quick, graphical, easily understood depiction of the loss of sea ice during the half century or so. It is, I believe, the simplest, most dramatic proof of climate change that exists. And it is undeniable. During the time these satellites have been flying, the SIE for September has shrunk by half.

Beginning October 15, 2025, NSIDC’s Sea Ice Today services will be reduced because of non-renewed funding.

https://nsidc.org/sea-ice-today

NSIDC’s ‘services’ are very generous, hopefully, the graphic may survive the cuts. Keep your fingers crossed.