induced warming in 2017, 2017=1°C, with temperatures from 1850 to 2017 approximated by an exponential rise, with
the exponential rate constant, set to give a rate of human-induced warming in 2017 of
0.2°C/decade. Temperatures from 2018-2100 are determined by fitting a smooth 4th
-order polynomial through specified warming at particular times after 2017.
WOW they expect human-induced warming of 0.2°C/decade, which is odd considering that
very few periods in the 138 year record broke that level of warming.
The long term warming (GISS) is .071°C/decade 1880-2018.
decade averaged warming since 1998 being roughly same at .065 °C/decade
There were periods of per decade warming higher than .2°C/decade, but 5 years in 128 years that had a slightly higher decade rate
does not bring the average up by much.
FYI the years where the decade average broke .2°C/decade were
1944,1945,1946,1947, and 2010, with the level in 2010 being .207 °C/decade.
It becomes clear that the level of warming described as expected by the IPCC Report for the next
eigth decades in a row , is not common at all.
