Looking For A Global Warming Signal In Australia's Climate Record

I love playing with these maps!

What strikes me most is the uniformity of the upward temperature trends across most of Australia over the last century. The greater homogeneity of Australian geography and climate when compared to a noisy place like the United States, and the absence of local variability, suggests to me there is a global warming signal here.

What’s interesting too is that, despite recent droughts, overall rainfall amounts are also slowly increasing over most of Australia over the same period. Warmer seas generate more water vapor which generates more rain? Might it be that simple?