Depending on what source of data you use, 2012 will go down as either the 9th or 10th warmest on record globally, according to NASA and NOAA's National Climatic Data Center (NCDC).
According to NASA, the average temperature globally for 2012 was 58.3 degrees F. (14.6 C.) which is 1.0 F. (0.6 C.) warmer than the mid-20th century baseline, putting 2012 as the 9th warmest on record.
Global temperature anomaly changes from 1880-2012. Video courtesy of NASA and YouTube.
According to the NCDC, the average temperature globally for 2012 was 58.03 F. (14.5 C.), which is 1.03 F. (0.57 C) above the 20th century average, putting 2012 as the 10th warmest on record.
The two warmest years on record globally are 2010 followed by 2005. Official records go back to 1880.
2012 was also the warmest "La Nina" year on record. Image below courtesy of the NCDC.
Key excerpt from the NASA GISS release.......
"One more year of numbers isn't in itself significant," GISS climatologist Gavin Schmidt said. "What matters is this decade is warmer than the last decade, and that decade was warmer than the decade before. The planet is warming. The reason it's warming is because we are pumping increasing amounts of carbon dioxide into the atmosphere."
A recent peer-reviewed study states that this most recent slow-down in global warming will make no difference on how much the planet will warm by the year 2100.
A new Duke university study suggests that global warming is not progressing as quickly as it would under the worst-case emissions, but more like the middle-of-the-road warming scenario.
Once again, a new monthly temperature record has been set for the global land/ocean surface combined, according to NOAA.
Photographs show drastic changes to several of Alaska's glaciers.
The Northern Hemisphere just had their warmest March since 1880.
A large area of unusually warm water in the Pacific Ocean may be having a significant influence on winter weather patterns.