Perihelion a = 147095271 km. Aphelion b = 152091174 km. Energy by inverse square law: ea=(1/a^2), eb=(1/b^2), ea/eb= 1.069080979933795728840190713, so the earth receives 6.9% more energy at perihelion.
Let T = 70 degrees F = 294.26 K, then ea/eb*T = 314.59 K = 106.59 degrees F. That's a large temperature difference. I suspect some of the energy is going elsewhere, like expanding the atmosphere.
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