# Equatorial Bulge and its implications on the climate

How much of the variance in the climate is due to the equatorial bulge and how much sun radiation do we lose due to the equatorial bulge?

I am interested in the variance both through time and through location.

A more uniform surface would emit/reflect less sun radiation due to Wien's displacement law. As such we would have a higher mean temperature and less variance. I am interested in a quantitative(even if there are no exact numbers) answer and not qualitative.

• The shape also affects the cross section to solar radiation, which in turn affects the total insolation. With the bulge, I think the cross section is smaller at equinox and greater at solstice. – Keith McClary Dec 31 '19 at 20:19