I just ran the following experiment 100 times, making it as statistically significant as the AGW temperature data from 1850:
My 20 gallon fishtank was half full of water (H2O) the thermometer read 72.
I added a teeny, tiny liitle bit of Bromo Seltzer, like 1/4 of a gram which released a hail of CO2 into the contained fish tank.
An hour later, the thermometer still read 72.
I conducted this experiment 100 consecutive days and never measured any increase in temperature.
We conclude that increasing CO2 from 280 to 400PPM has no effect on temperature.