# How does obliquity affect the climate?

Aug 10, 2016

Its effect on climate is measurable as incremental, for one half year, and decremental, for the other half.

#### Explanation:

At a place of latitude ${\theta}^{o}$ N/S, the angle of incidence of solar

rays has the annual range $\theta \pm \left(o b l i q u i t y\right) {23.4}^{o}$

If the change in the range is incremental in northern latitudes, it is

decremental in southern latitudes, and vice versa..

At a Solstice ( by about December 21 or June 23 )), the angle is

either the maximum $\theta + {23.4}^{o}$ or the minimum $\theta - {23.4}^{o}$..

The mean value $l a t i t u \mathrm{de}$ is attained at an equinox ( by about

March 21 or September 23 )..

The absolute value for this rate of change ( $\pm$ ) is
$\frac{4 X 23.4}{365.25}$