Arctic Sea Ice extent continues to be a problem. This year, according to the National Snow and Ice Data Center, ARctic Sea ice reached its lowest extent this year on September 17th, which is about the sixth lowest extent on record, following a multi-year trend of decline. There is variation from year to year. This year’s minimum was almost exactly the same as last years. With the exception of 2001, minimum extent has been below the climatalogical average every year since 1998.
Dana Nuccitelli has a post on this with excellent discussion and some nice graphics, and he has also produced a new version of the animated “How ‘Skeptics’ View Arctic Sea Ice Decline” graphic, which I reproduce here: