Brief Description:
The model describes the ion velocity at about 300 km altitude between -65 and
+65 magnetic altitude. It is based on incoherent scatter radar (ISR) data
from Millstone Hill (5/76-11/77), St. Santin (2/73-12/75), Arecibo
(8/74-5/77), and Jicamarca (1/74-10/77). Only data for magnetically quiet
periods are selected. They are averaged at each half hour for three seasons
(November-February; May-August; March, April, September, October). For given
magnetic latitude, longitude, universal time, and day number of the year the
subroutine provides the drift velocity component perpendicular to the
geomagnetic field and an electrostatic pseudo- potential, which can be used to
obtain the ionospheric electric field.
Availability: (1) from NSSDC's Request Office on tape or on diskette; (2) retrievable from NSSDC's anonymous FTP site.
NSSDC ID: MI-93B
References:
A. D. Richmond, M. Blanc, B. A. Emery, R. H. Wand, B. G. Fejer, R. F. Woodman,
S. Ganguly, P. Amayenc, R. A. Behnke, C. Calderon, and J. V. Evans, An
Empirical Model of Quiet-Day Ionospheric Electric Fields at Middle and Low
Latitudes, J. Geophys. Res. 85, 4658, 1980.
Go to the Ionospheric Models index Go to the Space Physics Models page
NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility