•The globe experienced its 19th warmest January since record keeping began in 1880.
•Arctic sea ice extent(北极海冰扩张) was the fourth smallest extent on record for January at 7.5 percent below average.
•January 2012 marks the coolest month since February 2008.
•However, January 2012 also marks the 26th January and 323rd consecutive month with a global temperature above the 20th century average.
•The last month with below average temperatures was February 1985.
Separately, the global land surface temperature was 0.49°C above the 20thcentury average of 2.8°C making this the 28th warmest January on record.