Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3619106h&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 19, CiteID L19106
Physics
7
Ionosphere: Ionospheric Irregularities, Ionosphere: Ionospheric Dynamics, Ionosphere: Ionospheric Disturbances, Ionosphere: Modeling And Forecasting, Ionosphere: Ionosphere/Atmosphere Interactions (0335)
Scientific paper
The NRL SAMI3/ESF three-dimensional simulation code is used to examine the effect of zonal neutral winds on the dynamics and morphology of equatorial spread F (ESF). Three zonal wind models are used: (a) a constant eastward neutral wind of 150 m/s, (b) HWM93, and (c) HWM07. It is shown that the dynamics and morphology of the ESF bubbles depends strongly on the zonal neutral wind. The simulation results are compared with TIMED/GUVI and IMAGE/FUV data. For the conditions studied (F10.7 = 170) it is found that the HWM93 wind model results agree better with the data than those from a constant wind model or HWM07. Specifically, observations of a reversed ‘C’ shaped FUV image, a westward tilt of the plasma bubble, and a decrease in zonal bubble velocity with increasing latitude are reproduced by SAMI3/ESF.
England Scott L.
Huba Joseph D.
Joyce Geoffrey
Krall Jonathan
Ossakow S. L.
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