Thermospheric tides during thermosphere mapping study periods |
| |
| Institution: | 1. Department of Electrical, Computer, and Systems Engineering, Boston University, Boston, MA 02215, U.S.A.;2. MIT Haystack Observatory, Westford, MA 01886, U.S.A.;3. Space Physics Research Laboratory, University of Michigan, Ann Arbor, MI 41809, U.S.A.;4. National Astronomy and Ionosphere Center, Arecibo Observatory, Arecibo, PR 00613, U.S.A. |
| |
| Abstract: | Neutral exospheric temperatures at 53°, 43° and 33° latitude from Millstone Hill steerable-antenna Thomson scatter measurements, and at 19° latitude from the Arecibo Observatory, obtained during three Thermosphere Mapping Study (TMS) coordinated campaign intervals during 1984 and 1985, are analyzed for diurnal and semidiurnal tidal components. The resulting amplitude and phase latitudinal structures are compared with numerical simulations. The observed semidiurnal tidal components are thought to be significantly affected by tidal waves propagating upwards from below the thermosphere during these solar minimum periods. We speculate that current inadequacies in specifying F-region plasma densities and mean zonal winds at lower altitudes within the simulation model may account for certain discrepancies between observations and theory. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
