NSIDC's oops moment – uncoordinated changes make for an interesting 24 hours

Many of you are probably aware of some strange goings on over at The National Snow and Ice Data Center (NSIDC) with their Arctic Sea ice graph, specifically, this one…

Sea ice variability within and outside the Arctic Circle

The essay below is a result of some collaboration between Jeff Condon and myself. I’ve been wondering for quite some time if there was any trend difference between the truly…