Wrong Way Weathermen

"But in fact, the basic question of whether rising greenhouse gas emissions will lead to climate change hinges on mostly simple, and predictable, matters of physics. The short-term variations that throw the weathercasters’ forecasts out of whack barely register at all."

That's about it, and why the local weathercasters, who mostly lack the graduate education required in climatology, can't grasp the long term effects of a well-tested theory, in place since the mid-19th Century and tested in a lab. They skipped that class.