Water vapour in the atmosphere comprises less than 2% of it but it still rains. CO2 in the atmosphere comprises less than the number you gave yet there is still life. Perhaps you should understand what you are trying to argue first? By this I mean pay attention to spectral measurements of outgoing radiation and how they have changed over the years. Several studies in scientific publications have done this and find that the majority of the warming relating to forcings are due to CO2. Water vapour will and wil always be a feedback. And the Sun is shown in models. Where do you think the energy comes from that powers the greenhouse effect?

The polar vortex coming down so low and setting record cold spells across the US was actually modeled. The jet stream may become weaker, was the general thought. the polar vortex travelling so far south is the result of a weakened jet stream. That being said, of course 1 year does not a trend make and causes caused by climate change deals with trends. A single incident is weather. This is classified as weather. If it continues to happen then it can be classified as a change in climate. and this is occurring while, at the same time, they are setting heat records across much of Australia. Of course, that is just weather as well. but it emphasizes how and where heat can be redistributed.

Sorry. Polar bears are not 'bi-polar'

I think you mean the penguins. there are no polar bears in Antarctica.

Because a cooling Antarctic means the entire globe is cooling right?