Originally Posted by
Cascadian
Ah, the good old used car sales assumptive close.
Alarmists have done an excellent job selling the idea that "climate change" causes more extreme weather, by simply assuming it's obviously true.
But where is the coherent theoretical explanation for why this would be true, and the evidence - not model output, real data - supporting the claim? You can't find either with a microscope.
So let's ignore the fact that "average global temperature" is an ill-posed, thermodynamically meaningless term.
And let's ignore the fact that there is no way in God's creation we can statistically significantly separate out the anthropogenic signal from the extremely variable natural signal - a signal that has countless contributing dynamics that vary in frequency from 400 million years (as our solar system passes through spiral arms of the galaxy), to tens of millions of years (as plate tectonics completely transform ocean currents), to hundreds of thousands and tens of thousand of years (known as the Milankovitch cycles, as the Earth's orbital parameters change because of Jupiter's gravitational pull), and on and on, down to days, hours and seconds (from turbulence down to the smallest scales, cosmic ray bombardment, and countless other factors).
But use your Cartesian common sense.
If the Earth gets warmer, it is the higher latitudes that warm (or cool), hence periods of polar ice and no polar ice; the tropics, with their highly efficient convective throughput, tend to maintain a very stable temperature regime regardless.
So if higher latitude regions warmed a smidge and the tropics stay the same, then the temperature differential between them narrows, and it is temperature differences that drive weather.
So wouldn't common sense tell you weather extremes would narrow?