Main Question or Discussion Point
does the Perigee and Apogee of the earths orbit relative to the seasons affect the temperature of our summers?
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What's your conclusion, given that the sun is approximately constant in its radiation output? Have you considered northern and southern hemispheres?does the Perigee and Apogee of the earths orbit relative to the seasons affect the temperature of our summers?
Perihelion occurs at beginning of January, and as Earth is slightly closer to Sun than a mean distance, the winters on northern hemisphere are bit warmer than winters on southern hemisphere (aphelion occurs in July).
yeah ... under similar conditions, which of course they are not"...summers are 2.3 °C (4 °F) warmer in the northern hemisphere than in the southern hemisphere under similar conditions."
Yes, I thought I made it clear in my post #5, that I admit I was wrong in my first post. Although the difference of solar irradiance between perihelion and aphelion is almost 7%, the Earth's climate system (including distribution of land and ocean) has a more significant influence on the surface temperatures.No, that is very incorrect and you only need to look at the data to see that.
If you compare the mean temperatures at comparable (opposite) latitudes (e.g Sydney and Los Angeles), the difference is not very big. Daily mean in Sydney 13 °C (in July) vs. 14.4 °C in LA (January) could even suggest colder winter in Sydney. Of course, this is very simplified comparison, as we do not take into account any effects due to regional climate conditions (we could also try to compare Europe and Patagonia). I just want to point out that differences might not be so big as you suggest.The southern hemispheres have VERY mild winters compared to the northern hemisphere.
We don't get the massive snowfalls, ice storms, rivers freezing over etc etc