When the gradient was negative, in response to a decreasing magnetic field (as in the case of a coil with a collapsing magnetic field and an induced emf), energy is absorbed from the environment to maintain the collapsing field. The polar regions cool and the ice caps formed.
After the magnetic minimum on 4 Jul 2016, an up turned gradient (as in the case of a coil with an increasing field and an opposite induced emf), the flow of energy is reversed to suppress the increasing magnetic field.
Now, this is the difficult part...without introducing temperature particles in motion perpendicular to Earth's spin and Earth's spinning magma...
The polar regions heat up and the ice caps melts. The Equator cools.
The greatest change in magnetic gradient is now when the field is near the extrema, assuming that the 5000 years long beat due to Earth's spin and Earth's magma spin is sinusoidal. Now and in the next few centuries (yes, a few hundred years) Earth will experience the greatest raise in temperature.
If the magnetic gradient, around its negative maximum is Earth's Ice Age, then the magnetic gradient, around its positive maximum would be Mass Extinction.
This is assuming that the heat kills off all when the magnetic gradient is at its positive maximum. It is more likely that mass extinction occurs over a long period and starts off when the weather is hot enough, at a time closer to 4 Jul 2016. As early as,
\(????=\cfrac{1281.5}{2}=640.75\)
or 640 years from now. How does the number two come about? If mass extinction occurs over half the period when the magnetic gradient is positive, and we center this half period at the point of maximum positive gradient, then mass extinct starts a quarter of the way from 4 Jul 2016.
When it is hot enough! But first, when the polar ice melts, earth floods.
