A Modeling Study of the Ionospheric F Region Electron Densities

Details A Modeling Study of the Ionospheric F Region Electron Densities A Modeling Study of the Ionospheric F Region Electron Densities

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa72b0530w&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SA72B-0530

Physics

2409 Current Systems (2708), 2443 Midlatitude Ionosphere, 2475 Polar Cap Ionosphere

Scientific paper

The high-resolution Thermosphere/Ionosphere Nested Grid (TING) model has been used to study the variability of ionospheric F region electron densities under various geophysical conditions. Important space weather phenomena such as the tongue of ionization and mid-latitude electron density trough, which are not well simulated in global models, can be readily studied using high spatial resolution nested grids. In this presentation we will discuss the effects of geomagnetic activity, solar cycle, seasonal and UT variations on the ionospheric F-region electron densities. It is found that geomagnetic activity can greatly enhance the polar cap tongue of ionization and nighttime auroral F region electron densities (blobs). Such enhancements in auroral electron densities have a strong effect not only locally, but also in the mid latitudes as a result of changes in the neutral circulation.

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