Measurements of the E- and F-Region Post-Sunset Ionosphere

Details Measurements of the E- and F-Region Post-Sunset Ionosphere Measurements of the E- and F-Region Post-Sunset Ionosphere

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsa33b0275s&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SA33B-0275

Physics

2415 Equatorial Ionosphere

Scientific paper

The GPS occultation method of ionospheric remote sensing has been shown to provide a means to obtain information about the low-density post-sunset E-region, particularly under conditions when sharp sporadic-E layers are present. Since E-region conductivity is a key factor in the development of low-latitude dynamo electric fields and the associated uplift of the equatorial ionosphere known as the pre-reversal enhancement, occultation data provide a mechanism for investigating the coupling between E-region densities and the dynamics of the higher altitude F-region. We present initial results of case studies involving E-region densities inferred from the Ionospheric Occultation Experiment (IOX) and the CHAMP GPS occultation sensors and measures of the F-region plasma state obtained from nearly coincident datasets (in-situ densities on DMSP and density profiles inferred from UV remote sensors on NASA's TIMED missions and the DMSP F16 spacecraft).

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