Improvement of GAIA polar input and its application to September 2017 event
Abstract
Upper atmosphere shows variation as a result of complex interactions under inputs from lower and upper regions. These interactions are an important target of the upper atmosphere physics and space weather purpose. GAIA, Ground-to-Topside Model of Atmosphere and Ionosphere for Aeronomy, is the whole atmosphere model including interaction with ionized plasma under solar EUV variation and a various waves input using a meteorological reanalysis data. The purpose of this study to extend the GAIA to include the magnetospheric variation via electric field deposition at polar region and auroral electron precipitation using empirical models. We input polar electric potential map based on Weimer model driven by solar wind and interplanetary magnetic field parameters including saturation effect of cross-polar-cap potential for large potential case. Variable auroral precipitation is considered based on emission observation. Estimated Joule heating is comparable with the observation for the quiet condition. Enhancement of total electron content during the magnetospheric storm event is produced due to penetration electric field. Application to September 2017 magnetic storm event will be discussed in the presentation.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMSA13B3250S
- Keywords:
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- 0355 Thermosphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0358 Thermosphere: energy deposition;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3369 Thermospheric dynamics;
- ATMOSPHERIC PROCESSES;
- 7949 Ionospheric storms;
- SPACE WEATHER