"The record melting of Arctic sea ice observed this summer and fall led to record-low levels of ice in both September and October, but a record-setting pace of re-freezing in November, according to the NASA Earth Observatory. Some 58,000 square miles of ice formed per day for 10 days in late October and early November, a new record.
Still, the extent of sea ice recorded in November was well shy of the median extent observed over the past quarter century....... The dramatic increase in ice is evident, when compared to the record-low amount observed Sept. 16. ..........The record melting of Arctic sea ice this summer was widely viewed as a harbinger of global warming, though unusual wind patterns played a role and many factors affecting fluctuations in Arctic ice are poorly understood by scientists."