Comparison of the POGO satellite and ground measurements of the magnetic field of the equatorial electrojet

Details Comparison of the POGO satellite and ground measurements of the magnetic field of the equatorial electrojet Comparison of the POGO satellite and ground measurements of the magnetic field of the equatorial electrojet

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jatp...43..801a&link_type=abstract

(International Symposium on Equatorial Astronomy - II, 6th, Aguadilla, PR, July 17-23, 1980.) Journal of Atmospheric and Terrest

Computer Science

Sound

8

Equatorial Electrojet, Ground Truth, Magnetic Measurement, Pogo, Satellite Sounding, Electromagnetic Scattering, Magnetic Field Configurations, Magnitude, Satellite-Borne Instruments, Three Dimensional Models

Scientific paper

The equatorial electrojet signature, defined as the magnetic field magnitude measured at the POGO satellite orbit and normalized to 400 km altitude, is plotted against its contemporaneous, corresponding horizontal magnetic field at a station at the dip equator under the recording satellite. It is found that they correlate well, and that the ratio of the magnetic field to the signature, k, is 2.28 + or - 0.53 in all regions. The vertical component of the field at Ibadan, largely due to the electrojet, yields a value of 2.03 for k upon comparison with the signature. A theoretical value of 2.58 is also computed for k from Onwumechili's (1967) three-dimensional model of the electrojet, buttressing the observed value of k. Previously discordant results have been reconciled, and regional differences in the value of k are no longer significant.

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