Response of global ionosphere to 2018 sudden stratosphere warming (SSW) event
Abstract
In this study, response of global ionosphere during 2018 sudden stratosphere warming (SSW) event is analyzed. Slant total electron content (STEC) from ground based GPS and low Earth orbit satellite (COSMIC, METOPA, METOPB, and TSX) observations are assimilated in to International Reference Ionosphere (IRI) 2016 model. Ionospheric Data Assimilation Four-Dimensional (IDA4D) algorithm technique is used to generate global distribution of TEC and electron density profile. Using global TEC and electron density from assimilation results, we examine ionosphere response during SSW event. We will present ionosphere variations during SSW event in Asian, African, and American longitudes. The result also shows that; ionosphere change during SSW is driven by westward propagating semidiurnal tide. Assimilating multi-instrument data types in to IRI model helps to understand global ionosphere response during SSW.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMSA51B3161M
- Keywords:
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- 2415 Equatorial ionosphere;
- IONOSPHERE;
- 2431 Ionosphere/magnetosphere interactions;
- IONOSPHERE;
- 6969 Remote sensing;
- RADIO SCIENCE;
- 7944 Ionospheric effects on radio waves;
- SPACE WEATHER