EL NINO / LA NINA and GMF ( GeoMagnetic Field )
Subtropical jet stream and equatorial weather
La Nina
EL Nino / La Nina events arise in an area of the equatorial Pacific where crossings
of the magnetic (Z-component) and geographic equators are found.
Geomagnetic equator in 2005 (green line)
EQUATORIAL ELECTROJET
This region creates the plasma bands above it when high-altitude winds of subtropical jet stream blow plasma across the Earth's magnetic field
(NASA).
The important fact is that plasma bands directly follow geomagnetic equator (green line)
Dotted white lines mark regions where rising tides of hot air indirectly create the bright, dense zones in the bands.
Three of the bright plasma pairs are areas with lots of thunderstorm activity, in this case were located over Africa, Indonesia and costal region of South America.
"The single pair of bright zones over the Pacific Ocean that is not associated with strong thunderstorm activity shows the disruption is propagating around the Earth" NASA
It is significant that this particular feature is coincident with the geographic - geomagnetic equatorial crossing and possibly related to it.
As intensity of the GMF changes with time, so it will position of the magnetic equator (and importantly) with it location of the plasma bands.
One measure of this movement is the location of equatorial crossing. The equatorial crossing has moved east-wards during the last four centuries.
The above chart is reminiscent of the global temperature trend for the period
http://iri.columbia.edu/climate/ENSO/globalimpact/temp_precip/region_elnino.html
NOTE: Location of Geomagnetic Equator is a time function of geomagnetic dipole
for the ARCTIC CELL see: GMF & Arctic temperature
More GMF and temperature charts can be found here:
Graphs and Formulae