[smitty1110]

Almost none [1]. In theory, solar radiation has been decreasing a bit, so we should have cooled slightly over the past 50 years.

[1] - https://climate.nasa.gov/faq/14/is-the-sun-causing-global-wa...

[bumby]

Is the little hump inn temperature in the 1940s interpretable? Is it possible this is from the mass industrialization during WW2?

[jeffbee]

No, the little hump during the war is caused by the fact that before and after the war there were various groups sampling sea surface temperatures with various techniques, but during the war only the Americans kept recording these temperatures.

[refurb]

So the sun is more active but irradiance is decreasing?

[keithnz]

see the link IvyMike posted below from the same group