Yes, that pesky MASSIVE spike in temperature. 
Averaged over all land and ocean surfaces, temperatures warmed roughly 1.53 degrees Fahrenheit (0.85 degrees Celsius) from 1880 to 2012, according to the Intergovernmental Panel on Climate Change...
https://www2.ucar.edu/climate/faq/how-much-has-global-temperature-risen-last-100-years
1.53 degrees is horrifying!