H2O is a condensing GHG so studies normally remove the influence of water vapor. The other gases increase in concentration over time as we continue burning fossil fuels.
Lees knows this but his desperation forces him to constantly cover up the effect of the CO2 he
says he is comfortable with

This chart:

shows the effect of CO2 really well. What it charts is CO2 concentration and the amount of infrared radiation redirected back down to the surface.
Have a good look at it, it makes AGW denial just ridiculous.
The world receives energy, light, ultraviolet and near–IR radiation from the sun which warms the planet. It can only get rid of excess heat by radiation: infra red.
It has been known for 200 years that CO2 is a greenhouse gas, and just as well it is a greenhouse gas too: the world would be bloody chilly without it! However, since the industrial revolution picked up, errr, steam we have been creating and emitting CO2 by burning fossil fuels and the concentration of CO2 in the atmosphere has increased by 46% since 1880. So, as a direct result, have temperatures.
Lees has dragged up another stale argument “CO2 is not a wellmixed gas” which is wrong. Not only that the chart above shows the carbon cycle not geographical dispersion. Stations from the Arctic to the Antarctic have shown the same increase in CO2.
But with more and more CO2 and other GHGs in the atmosphere means the planet is warming up, like a car engine with insufficient coolant in the radiator.