Reducing human CO2 will have little effect on temperature.
96% of the annual addition to atmospheric carbon dioxide is from volcanoes, subsea vents and other natural causes. Human contribution is 4%. Current atmospheric CO2 level is 400 parts per million. Do the math and that means humans contribute a miniscule .0016% of atmospheric CO2. 
Doing more math, “if the US EPA Clean Power Plan is implemented, by the year 2100 temperature will be reduced by 0.023 degree Fahrenheit.” Danish statistician Dr. Bjorn Lomborg