CORISS Observations of Ionospheric Scintillation

Details CORISS Observations of Ionospheric Scintillation CORISS Observations of Ionospheric Scintillation

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa33a1433s&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA33A-1433

Physics

[2439] Ionosphere / Ionospheric Irregularities

Scientific paper

Rapid fluctuations in radio occultation (RO) signal to noise ratios and phase can signify the presence of fine scale ionospheric density irregularities along the occultation ray path. While such signatures are clearly identifiable in 1 Hz observations that are typically made at ionospheric tangent altitudes, high-rate (50 Hz) data is required to sample the full range of irregularity scale sizes responsible for L-band scintillation. At times the presence of intermediate-scale ionospheric structures can also be inferred from RO limb TEC and inverted electron density profiles, even when amplitude scintillations are not present. We present results of scintillation analysis of the first year of data from the CORISS instrument on the C/NOFS satellite, together with preliminary comparisons to scintillation data from overflights of the Air Force Research Laboratory’s ground-based SCINDA receivers that illustrate the characteristics of equatorial irregularities. Differences between scintillation indices derived from 1 Hz and 50 Hz observations will be discussed.

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