Brief Description:
This model consists of a sixth order polynomial in invariant magnetic latitude
and an eighth order Fourier series in local time for the electric field
components Ex (positive southward) and Ey (positive eastward). It represents
the average electric field patterns observed by the Millstone Hill incoherent
scatter radar in all of 1978. Three levels of geomagnetic activity (Kp) are
considered. Averages were determined for half-hour intervals and for one degree
intervals for invariant latitudes from 60 to 75 degrees. For recent updates,
see Holt et al. (1986). Foster
et al. (1986) used Millstone Hill data together with NOAA/TIROS precipitation
data to develop convection (drift/electric field) models for different levels
of a precipitation index.
Availability: Please contact the model authors
References:
J. V. Evans, J. M. Holt, and R. H. Wand, Millstone Hill Incoherent Scatter
Observations of Auroral Convection Over 60 <= invariant latitude <= 75 , 1. Observing and Data
Reduction Procedures, J. Geophys. Res. 84, 7059, 1979.
J. V. Evans, J. M. Holt, W. L. Oliver, and R. H. Wand, Millstone Hill Incoherent Scatter Observations of Auroral Convection Over 60 < = invariant latitude <= 75 , 2. Initial Results, J. Geophys. Res. 85, 41, 1980.
W. L. Oliver, J. M. Holt, R. H. Wand, and J. V. Evans, Millstone Hill Incoherent Scatter Observations of Auroral Convection Over 60 <= invariant latitude <= 75 , 3. Average Patterns Versus Kp, J. Geophys. Res. 88, 5505, 1983.
J. M. Holt, R. H. Wand, J. V. Evans, and W. L. Oliver, Empirical Models for the Plasma Convection at High Latitudes from Millstone Hill Observations, J. Geophys. Res. 92, 203, 1987.
J. C. Foster, J. M. Holt, R. G. Musgrove, and D. S. Evans, Ionospheric Convection Associated with Discrete Levels of Particle Precipitation, Geophys. Res. Lett. 13, 656, 1986.
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