Climate Change: Global Temperature
Author: LuAnn Dahlman
September 11, 2017

Temperatures measured on land and at sea for more than a century show
that Earth's globally averaged surface temperature is rising. Since
1970, global surface temperature rose at an average rate of about 0.17°C
(around 0.3° Fahrenheit) per decade€”more than twice as fast as the
0.07°C per decade increase observed for the entire period of recorded
observations (1880-2015). The average global temperature for 2016 was
0.94°C (1.69°F) above the 20th century average of 13.9°C (57.0°F),
surpassing the previous record warmth of 2015 by 0.04°C (0.07°F).


According to the official 2016 global report from NOAA's National
Centers for Environmental Information,

[2016] marks the fifth time in the 21st century a new record high
annual temperature has been set (along with 2005, 2010, 2014, and 2015)
and also marks the 40th consecutive year (since 1977) that the annual
temperature has been above the 20th century average. To date, all 16
years of the 21st century rank among the seventeen warmest on record
(1998 is currently the eighth warmest.) The five warmest years have all
occurred since 2010.

https://www.climate.gov/news-feature...al-temperature