Study of the Topside Ionosphere Using Radio Occultation Data

Details Study of the Topside Ionosphere Using Radio Occultation Data Study of the Topside Ionosphere Using Radio Occultation Data

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa11a1462t&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA11A-1462

Physics

[6929] Radio Science / Ionospheric Physics, [6969] Radio Science / Remote Sensing, [7959] Space Weather / Models

Scientific paper

Radio occultation (RO) data from various satellites can provide altitude profiles of the ionosphere. While much of the interest in using RO data in the ionosphere has been focused on the F2 peak region, it is possible to extract information related to the topside ionosphere from this data type. A single occulting satellite, or even a relatively small constellation such as the COSMIC/FORMOSAT-3 satellites, cannot accurately specify the global topside ionosphere on its own over short intervals owing to insufficient numbers of measurements. Hence, published studies to date are generally confined to climatological studies using data accumulated over relatively long time intervals, or coincidental studies where RO data happened to be available near a region of interest within a study period. In addition to data-only studies, we use radio occultation measurements from the COSMIC/FORMOSAT-3 cluster of satellites, coupled with a two-dimensional data assimilation model of the topside ionosphere, to study the time and spatial variation of the global ionosphere at approximately 800 km altitude. We will present initial results from this study.

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