PCI References

Copyright WDC C1 for STP at RAL.

Further Reading :

• Troshichev, O.A., V.G. Andrezen, S. Vennerstrom, E. Friis- Christensen, Magnetic activity in the polar cap - A new index, Planet. Space Sci., 36, 1095-1102, 1988.

• Vennerstroem, S., E. Friis-Christensen, O.A. Troshichev, V.G. Andrezen, Comparison between the Polar Cap Index, PC, and the Auroral Electrojet Indices, AE, AL, and AU, J. Geophys. Res., 96, 101-113, 1991.

• Vennerstroem, S., E. Friis-Christensen, O.A. Troshichev and V.G.Andrezen, Geomagnetic polar cap index 1975-1993, Report UAG-103, WDC A for Solar-Terrestrial Physics, NGDC, Boulder.