Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsa14a..04n&link_type=abstract
American Geophysical Union, Spring Meeting 2009, abstract #SA14A-04
Physics
2437 Ionospheric Dynamics, 2439 Ionospheric Irregularities, 2499 General Or Miscellaneous, 6929 Ionospheric Physics (1240, 2400)
Scientific paper
Measurement of neutral winds is important to understand the dynamics and electrodynamics of E-region and the ionospheric variabilities in general. Rockets, Satellites, MF and meteor radars have been used to measure winds in the E-region. Rocket observations have shown winds as high as 170 m s-1. These observations, however, are limited. On the other hand, continuous observations made by MF and meteor radars are comparatively more in number but the wind magnitude is less. Satellite measurement of winds provide average picture and also not continues in time. In this paper we present the meridional neutral winds derived from the field-aligned radar echoes observed using Gadanki MST radar. A large database of the observations has been used to study the variabilities of meridional winds. The derived meridional winds are compared with that of rocket measurements reported previously. They are found to agree with rocket measured values, which are much larger than the MF and meteor radar winds. The derived meridional winds are also compared with that of TIDI observations and horizontal wind model (HWM-93). Local time and seasonal variation of meridional winds are also derived and compared with that of TIDI observations and HWM-93.
Narukull V.
Patra Amit Kumar
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