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Le et al., 1998

Le, G. C. T. Russell, and J. G. Luhmann, POLAR magnetic observations of the low altitude, high latitude magnetosphere during the January 1997 magnetic cloud event, 25, 2541, 1998.

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Figure 1: The Wind IMF and solar wind data as well as Dst index for May 10-15, 1999.

 
Figure 2: Polar orbit in GSM coordinates on May 11. The Polar orbit on May 14 is essentially the same as that on May 11. The magnetopause position is that expected for May 14 with nominal solar wind dynamic pressure of 2 nPa and northward IMF. The irregularly shaped trace is the Polar orbit scaled by the sixth root of the solar wind dynamic pressure on May 11.

 
Figure 3: Residual of the magnetic field by subtracting the IGRF model field from the Polar MFE data.

 
Figure 4: Residuals of the magnetic field by subtracting the T96 model that uses WIND solar wind and IMF conditions and a ring current of Dst=-10 nT as inputs.

 
Figure 5: The FAC magnetic field perturbation in east-west component as a function of magnetic latitudes of Polar ionospheric footprints in the southern hemisphere at altitudes of ~ 5000 km near Polar perigees. The thick traces are for May 11 and thin traces for May 14.