Data · dataset · 2026
Influence of nonmigrating tides and geomagnetic field geometry on the diurnal and longitudinal variations of the equatorial electrojet
Listed in National Center for Atmospheric Research
In this study, equatorial electrojets (EEJs) simulated by the Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIE-GCM) were compared with those observed by ground-based magnetometers and the Challenging Minisatellite Payload (CHAMP) satellite.
Description
Simulations were performed with or without nonmigrating tidal forcing at the lower boundary and in the frame of the International Geomagnetic Reference Field (IGRF) or dipole field.
The model forced by the nonmigrating tides could qualitatively reproduce the local time and longitudinal variation of an EEJ in the frame of the IGRF with accuracy. The tides were important in causing the later local time occurrence of the EEJ peak in the Peruvian sector, and they favored the occurrence of the morning counterelectrojet (CEJ) in the frame of the IGRF. The difference in the EEJ peak intensity between the Peruvian and Indian stations was enhanced due to the tidal effect.
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The net effect of the tides on the two-station difference was almost doubled in the dipole field compared with that in the IGRF. The TIE-GCM with a tidal input could reproduce a Wavenumber-4 longitudinal structure of the noontime EEJ, but it underestimated the peak EEJ in the East Asia sector. The magnetically eastward electric field and the neutral zonal wind at noontime in theEregion in the TIE-GCM were both weak in the East Asia sector.
This model-data discrepancy was at least partly due to insufficient lower boundary forcing in this longitudinal sector.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7ng4txd ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/influence-of-nonmigrating-tides-and-geomagnetic-field-… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=07ed3306-e087-445b-8d65-0bea8c999… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Longitudinal study 65%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 07ed3306-e087-445b-8d65-0bea8c999433 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[method].local:method:longitudinal-study | enrichment · data ucar edu | keyword-concept-rules@1.0.0 | title+description (65%) |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |