The northern end in Darwin is the canary in the coal mine.
Australia has a tropical climate. A brisk breeze at night is usually as cold as it gets in the winter, at least for most of last century. In recent years you could feel the bitter sting of cold so acrid it was like the surface of the planet was being exposed to the absolute zero of outer space. If Australia is getting this kind of cold I can only imagine what is in store for the Northern Hemisphere. Buried alive overnight one winter soon?
Other side of the planet, same airstream