Secondary gravity waves from deep convection over the continental United States: case studies
Abstract
In this paper, we model the primary and secondary gravity waves (GWs) created from deep convection containing supercells over the continental United States for several case studies. Here we utilize GOES satellite images to estimate the primary GW spectra, and use ray tracing (including GW phases) and reconstruction via the GW dissipative polarization relations to determine the primary and secondary GW fields in the thermosphere. We show that some of the secondary GWs in the F region have horizontal phase speeds in excess of the minimum sound speed below the turbopause. We compare our results to the traveling ionospheric disturbances (TIDs) extracted from GPS TEC data, and draw conclusions about the sources of these F-region waves.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMSA43B3509V
- Keywords:
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- 3369 Thermospheric dynamics;
- ATMOSPHERIC PROCESSESDE: 3384 Acoustic-gravity waves;
- ATMOSPHERIC PROCESSESDE: 3389 Tides and planetary waves;
- ATMOSPHERIC PROCESSESDE: 2427 Ionosphere/atmosphere interactions;
- IONOSPHERE