Using further 3 - D dynamo simulations, which model the generation of magnetic field by turbulent fluid motions, Driscoll looked more carefully at
the expected changes in the magnetic field over this period.
Not exact matches
With these monumental
changes in the shielding effect of the Earth's
magnetic field, you'd
expect to see fairly massive climate consequences if the GCR crowd are right.
After all, the implied
changes in GCR flux are huge compared to what is
expected from the gentle modulation of the Earth's
magnetic field arising from recent solar activity
changes (not that there's any trend
in those that would explain recent warming).
The Earth's
field sustains the magnetosphere and it is not constant either, it shows similar decadal variability, as shown
in the data from and used by number of distinguished geo -
magnetic scientists and researchers (Jault Gire, LeMouel, J. Bloxham, D. Gubbins, A.Jackson, R. Hide, D. Boggs, J. Dickey etc,) Since
changes in either of two
fields affect strength of the magnetosphere, it would be
expected that the «magnetospheric variability» time function could be produced by combining two sets of available data.
After all, the implied
changes in GCR flux are huge compared to what is
expected from the gentle modulation of the Earth's
magnetic field arising from recent solar activity
changes (not that there's any trend
in those that would explain recent warming).