Editing Dynamo theory (section)

=== Modern modelling ===
The complexity of dynamo modelling is so great that models of the geodynamo are limited by the current power of [[supercomputer]]s, particularly because calculating the [[Ekman number|Ekman]] and [[Rayleigh number|Rayleigh]] number of the outer core is extremely difficult and requires a vast number of computations.

Many improvements have been proposed in dynamo modelling since the self-consistent breakthrough in 1995.  One suggestion in studying the complex magnetic field changes is applying [[spectral method]]s to simplify computations.<ref>{{Cite journal| last1=Avery|first1=Margaret S.| last2=Constable|first2=Catherine G.|author-link2=Catherine Constable| last3=Davies|first3=Christopher J.|last4=Gubbins|first4=David|date=2019-01-01|title=Spectral methods for analyzing energy balances in geodynamo simulations|url=http://eprints.whiterose.ac.uk/140318/1/energy_balance%28freq%29_revised_v2.pdf | journal=Physics of the Earth and Planetary Interiors | volume=286| pages=127–137| bibcode=2019PEPI..286..127A| doi=10.1016/j.pepi.2018.10.002| issn=0031-9201|via=|doi-access=free}}</ref> Ultimately, until considerable improvements in computer power are made, the methods for computing realistic dynamo models will have to be made more efficient, so making improvements in methods for computing the model is of high importance for the advancement of numerical dynamo modelling.