Warmist Chris Mooney suggests that trace amounts of CO2 are a "fundamental NEW ingredient in the background of all weather"

How Global Warming Affects Weather: Why Can’t We Get the Story Right? | The Intersection | Discover Magazine

...global warming adds a fundamental new ingredient in the background of all weather—more overall heat. This is certain to have a wide array of consequences—like a greater risk of heat waves, and more intense precipitation events–and indeed, some of those are already being detected.

Is that hard?

I hate to break this to Chris, but lots of things "new" to him, apparently including 400 ppm CO2, are actually not unprecedented.