Effects in the Middle and Upper Atmosphere due to Meteorological and Geospace Variability During 2006

Details Effects in the Middle and Upper Atmosphere due to Meteorological and Geospace Variability During 2006 Effects in the Middle and Upper Atmosphere due to Meteorological and Geospace Variability During 2006

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa21b..02m&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SA21B-02

Mathematics

Logic

[2427] Ionosphere / Ionosphere/Atmosphere Interactions, [2447] Ionosphere / Modeling And Forecasting, [3334] Atmospheric Processes / Middle Atmosphere Dynamics, [3389] Atmospheric Processes / Tides And Planetary Waves

Scientific paper

In the recent geomagnetic quiescent years observations showed that the ionosphere and thermosphere is influenced not only from geospace but also from below by tropospheric weather. This is especially apparent in the observed longitudinal variation of quantities like ion drift, neutral winds, composition, ionospheric current and electron density. The National Center for Atmospheric Research (NCAR) thermosphere-ionosphere-mesosphere-electrodynamics general circulation model (TIME-GCM) can model many of the observed tidal features. In this study we will focus on the migrating and nonmigrating tidal variability due to the effects of meterological variability under realistic geospace conditions for 2006. We quantify the effect on the tides due to the planetary wave activity at the lower boundary by using control simulations. We examine the change in the tidal propagation due to changes in the background atmosphere. We highlight the introduced temporal variability of major tidal components and their effect on the electrodynamics, the ionosphere and upper thermosphere.

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