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NOAA has released their 2017 global land/ocean surface temperature data for 2017, which uses slightly different methods than what we get from NASA GISS.
Image courtesy of NOAA:
According to NOAA, 2017 ranked as the third warmest year on record globally, averaging 0.84 deg. C (1.51 deg. F.) above the 20th century average. The records go back to 1880.
The warmest year on record remains 2016, which averaged +0.94 deg. C. above the 20th century average. The second warmest year on record was 2015 with a departure of +0.90 deg. C. Both of these years were considered strong El Nino years, El Nino tends to have a warming influence on the average global temperature.
It was noted that 2017 was the warmest non-El Nino year on record.
The year 2017 was the 41st consecutive year that the global land/ocean temperature was above the 20th century average.
The top six warmest years on record have all occurred since 2010.
So far this century, the annual global average temperature has been broken five times.
The annual global land/ocean temperature has increased at a rate of 0.07 deg. C. per decade since 1880. However, the average rate increase is twice as much since 1980.
Nine of the top 10 warmest years on record have all occurred since 2005.
For the contiguous United States, 2017 ranked as the third warmest year on record going back to 1895. The warmest year on record was 2012 followed by 2016.
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