The "Green House Effect" was mentioned in this video. Green House gases make the planet 30 C warmer than it otherwise would be. 95% of the "green house effect" is due to water vapor, a green house gas. When it comes to CO2 and its effect, the pre-industrial level of about 280 ppm is of course a natural effect, by which I mean the extra warming that quantity of CO2 causes has nothing to do with humans.
Charles, you took some math I understand in your college or university training, so you know what Logarithm means. CO2 has a logarithmic function to its warming effect. That is why in climate science the terms "doubling of CO2" is used, to express this logarithmic function a little bit easier.
The Intergovernmental Panel on Climate Change (IPPC) says doubling CO2 causes about 1 C of warming, but feedbacks kick in to cause 3 C of warming. My nearly 5 years of research informs me that this feedback either doesn't exist or is very low. My other problem with IPCC's position that CO2 is the control knob on climate is that in the past there was CO2 levels of 7,000 ppm with global temperatures colder than they are today at 400 ppm.
I notice the day after I watched this video, the forecast for the high for Seattle was 67F or so.
My question to you Charles is, what year is Seattle going to have Santa Barbara climate?