Analysis of Ionospheric Electron Parameters in Relation to the Geomagnetic Index Dst and Solar F10.7 Flux from RO Data of FORMOSAT-3/COSMIC

Details Analysis of Ionospheric Electron Parameters in Relation to the Geomagnetic Index Dst and Solar F10.7 Flux from RO Data of FORMOSAT-3/COSMIC Analysis of Ionospheric Electron Parameters in Relation to the Geomagnetic Index Dst and Solar F10.7 Flux from RO Data of FORMOSAT-3/COSMIC

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa31b1428w&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA31B-1428

Other

[2499] Ionosphere / General Or Miscellaneous, [7954] Space Weather / Magnetic Storms, [7974] Space Weather / Solar Effects

Scientific paper

The FORMOSAT-3/COSMIC mission launched in 2006 has provided globally-distributed radio occultation profiles for the ionosphere and atmosphere. Utilizing this advantage, we statistically analyze how the ionospheric electron parameters NmF2, hmF2, and TEC react to the geomagnetic activities and solar activities at different magnetic latitudes and magnetic local time (MLT) based on these data. The responses to geomagnetic index Dst and its changing rate dDst/dt at both quiet and storm time are investigated based on these data of two years from August of 2006 to July of 2008. The results indicate that, in general, the NmF2, hmF2 and TEC decrease as Dst increases at all seasons at the low-latitude dayside regions. During the main phase of a storm, this region can expand to higher latitudes. Only during the sudden commencement phase (SSC) of storm events, NmF2 and TEC generally increase as Dst increases. On the other hand, the investigation results on response to the solar F10.7 flux shows that the extent of variation of these ionospheric parameters may have considerable regional differences.

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