Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields
A three-dimensional, regional simulation is used to investigate ionospheric plasma density irregularities associated with Equatorial Spread F. This simulation is first driven with background electric fields derived from ISR observations. Next, the simulation is driven with electric fields taken from...
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Frontiers Media S.A.
2025-01-01
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2024.1488935/full |
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| author | Aaron Kirchman David Hysell Tzu-Wei Fang |
| author_facet | Aaron Kirchman David Hysell Tzu-Wei Fang |
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| description | A three-dimensional, regional simulation is used to investigate ionospheric plasma density irregularities associated with Equatorial Spread F. This simulation is first driven with background electric fields derived from ISR observations. Next, the simulation is driven with electric fields taken from the WAM-IPE global model. The discrepancies between the two electric fields, particularly in the evening prereversal enhancement, produce disagreeing simulation results. The WAM-IPE electric fields are then studied through a simple sensitivity analysis of a field-line integrated electrodynamics model similar to the one used in WAM-IPE. This analysis suggests there is no simple tuning of ion composition or neutral winds that accurately reproduce ISR-observed electric fields on a day-to-day basis. Additionally, the persistency of the prereversal enhancement structure over time is studied and compared to measurements from the ICON satellite. These results suggest that WAM-IPE electric fields generally have a shorter and more variable correlation time than those measured by ICON. |
| format | Article |
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| institution | Kabale University |
| issn | 2296-424X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Physics |
| spelling | doaj-art-5ec7eb659bc241e5a747920514d5f0fc2025-01-09T05:10:16ZengFrontiers Media S.A.Frontiers in Physics2296-424X2025-01-011210.3389/fphy.2024.14889351488935Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fieldsAaron Kirchman0David Hysell1Tzu-Wei Fang2Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United StatesDepartment of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United StatesNOAA Space Weather Prediction Center, Boulder, CO, United StatesA three-dimensional, regional simulation is used to investigate ionospheric plasma density irregularities associated with Equatorial Spread F. This simulation is first driven with background electric fields derived from ISR observations. Next, the simulation is driven with electric fields taken from the WAM-IPE global model. The discrepancies between the two electric fields, particularly in the evening prereversal enhancement, produce disagreeing simulation results. The WAM-IPE electric fields are then studied through a simple sensitivity analysis of a field-line integrated electrodynamics model similar to the one used in WAM-IPE. This analysis suggests there is no simple tuning of ion composition or neutral winds that accurately reproduce ISR-observed electric fields on a day-to-day basis. Additionally, the persistency of the prereversal enhancement structure over time is studied and compared to measurements from the ICON satellite. These results suggest that WAM-IPE electric fields generally have a shorter and more variable correlation time than those measured by ICON.https://www.frontiersin.org/articles/10.3389/fphy.2024.1488935/fullequatorial spread FWAM-IPEplasma driftsprereversal enhancementequatorial electrodynamics |
| spellingShingle | Aaron Kirchman David Hysell Tzu-Wei Fang Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields Frontiers in Physics equatorial spread F WAM-IPE plasma drifts prereversal enhancement equatorial electrodynamics |
| title | Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields |
| title_full | Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields |
| title_fullStr | Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields |
| title_full_unstemmed | Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields |
| title_short | Regional simulations of equatorial spread F driven with, and an analysis of, WAM-IPE electric fields |
| title_sort | regional simulations of equatorial spread f driven with and an analysis of wam ipe electric fields |
| topic | equatorial spread F WAM-IPE plasma drifts prereversal enhancement equatorial electrodynamics |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2024.1488935/full |
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