Data · dataset · 2026
Sq and EEJâA review on the daily variation of the geomagnetic field caused by ionospheric dynamo currents
Listed in National Center for Atmospheric Research
A record of the geomagnetic field on the ground sometimes shows smooth daily variations on the order of a few tens of nano teslas.
Description
These daily variations, commonly known as Sq, are caused by electric currents of several flowing on the sunlit side of the E-region ionosphere at about 90-150 km heights. We review advances in our understanding of the geomagnetic daily variation and its source ionospheric currents during the past 75 years.
Observations and existing theories are first outlined as background knowledge for the non-specialist. Data analysis methods, such as spherical harmonic analysis, are then described in detail. Various aspects of the geomagnetic daily variation are discussed and interpreted using these results.
Read the rest (1 more)
Finally, remaining issues are highlighted to provide possible directions for future work.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d751411d ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/sq-and-eejaa-review-on-the-daily-variation-of-the-geom… ↗
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=40adef8c-955a-4448-ae56-335f55545… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 40adef8c-955a-4448-ae56-335f555455dd | 8 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 | |
| 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 |