Comparisons of equatorial irregularities measurements from C/NOFS: TEC using CERTO and CITRIS with in-situ plasma density

Details Comparisons of equatorial irregularities measurements from C/NOFS: TEC using CERTO and CITRIS with in-situ plasma density Comparisons of equatorial irregularities measurements from C/NOFS: TEC using CERTO and CITRIS with in-situ plasma density

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3600c08s&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 4, CiteID L00C08

Physics

5

Ionosphere: Equatorial Ionosphere, Ionosphere: Ionospheric Disturbances, Ionosphere: Ionospheric Irregularities, Ionosphere: Plasma Temperature And Density, Ionosphere: Instruments And Techniques

Scientific paper

Equatorial plasma density measurements using two techniques are analyzed. The unique instrument complement on C/NOFS (Communication/Navigations Outages Forecasting System) allows for the measurement of TEC (Total Electron Content) using the CERTO (Coherent Electromagnetic Radio TOmography) beacon and measurement of in-situ densities using the PLP (Planar Langmuir Probe). In a nearby orbit, the CITRIS (sCIntilation and TEC Receiver In Space) was available for complementary measurements. TEC was measured with 1) CERTO-CITRIS conjunctions that allow estimates of absolute TEC and 2) CITRIS with ground-based DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) beacons. The combination of the remote and in-situ techniques provides more information, enhanced believability for probe measurements as the satellite transitions from darkness to sunlight, as well as cross-calibration and better accuracy for both data sets. The measurements presented are taken in unusually quiet geomagnetic conditions and indicate equatorial irregularities are present nearly 80% of the time for nighttime measurements.

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