Comparison of the ionospheric profiles derived with radio occultation technique to the Digisonde data

Details Comparison of the ionospheric profiles derived with radio occultation technique to the Digisonde data Comparison of the ionospheric profiles derived with radio occultation technique to the Digisonde data

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa13a1065r&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA13A-1065

Computer Science

Sound

2403 Active Experiments, 2427 Ionosphere/Atmosphere Interactions (0335), 2467 Plasma Temperature And Density, 2494 Instruments And Techniques

Scientific paper

COSMIC/FORMOSAT-3 is a joint Taiwan-U.S. multi satellite project that started in December of 2005, and is expected to last for five years. GPS radio occultation receivers onboard the satellites make it possible to measure ionospheric electron density profiles on a global scale using radio occultation (RO) technique. Such observations will provide data for studying ionospheric plasma structures and improving large-scale theoretical models. However, the RO measurements first need to be verified with other established ionospheric techniques. We present results of the comparison of the COSMIC RO profiles and simultaneous measurements made with ground based digisonde sounders using the data collected in December 2006. Results generally demonstrate a good agreement between the two techniques, at least in terms of the critical frequency, foF2, with the typical absolute error in RO measurements smaller than 1 MHz. A few cases of significant deviations of the RO profiles from the digisonde data have been observed, however. Having analyzed the erroneous RO measurements we make recommendations for future development of the RO technique and satellite observations on a global scale.

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