Solar causes of the long-term increase in geomagnetic activity

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Stamper, R.; Lockwood, Mike; Wild, M. N.; Clark, T. D. G.;
  • Publisher: American Geophysical Union
  • Identifiers: doi: 10.1029/1999JA900311
  • Subject:
    arxiv: Astrophysics::Earth and Planetary Astrophysics | Physics::Space Physics | Astrophysics::Solar and Stellar Astrophysics

We analyze the causes of the century-long increase in geomagnetic activity, quantified by annual means of the aa index, using observations of interplanetary space, galactic cosmic rays, the ionosphere, and the auroral electrojet, made during the last three solar cycles.... View more
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