ESS101C
Prof.
Jin-Yi Yu
Eccentricity and Seasonal Insolation
qSmall variations in received insolation do occur
in connection with Earth’s eccentric orbit about the Sun, but these appear only as changes
in the total energy received by the entire Earth, not as seasonal variations.
qCompared to the
changes in seasonal insolation of 10% or more that occur at the tilt
and precession cycles, these annual eccentricity changes are
smaller by a factor of 50 or more.