No summer/winter effect on overnight temperatures

As shown on the previous post we intend to see whether a summer/winter effect occurs with temperature anomalies in Australia. If global warming was man made then we should see no summer/winter effect at any time. Similarly, if global warming was sun induced, then we should see no summer/winter effect overnight but will see an effect at other times.

So we will first see whether a summer/winter effect occurs overnight. We obviously hope that we don't see an effect here, anything else would prove very interesting. However the overnight summer/winter analysis should not prove or disprove any global warming theory.

As shown below, all of Midnight, 3am and 6am had no significant increase or decrease in summer temperature anomalies over winter temperature anomalies. (Mid: t = 0.7, p = 0.44; 3am: t = 1.0, p = 0.32 ;6am: t = -0.25, p = 0.8).

Also, Midnight, 3am and 6am for summer, as well as Midnight, 3am and 6am for winter each recorded no significant increase or decrease in temperature anomalies over time. (Summer: Midnight: t = 1.3, p = 0.17; 3am: t = 1.7, p = 0.8; 6am: t = 0.9, p = 0.39; Winter: Midnight: t = 0.06, p = 0.96; 3am: t = 0.02, p = 0.99; 6am: t = 0.85, p = 0.4)

Hence it can be safely concluded that there is no summer/winter effect on overnight temperatures. But what happens at other times of the day? We will lok at evening temperatures next.