edu.ucar.opensky::articles:42370
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2025-12-24T18:05:57.502831
ISO 19115-2 Geographic Information - Metadata - Part 2:
Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
https://n2t.net/ark:/85065/d7bk1hpn
https://doi.org/10.5281/ZENODO.7639973
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Related Dataset #1
Effect of Vertical Shear in the Zonal Wind on Equatorial Electrojet Sidebands: An Observational Perspective Using Swarm and ICON Data
https://doi.org/10.5065/D6RX99HX
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Related Service #1
Cheyenne: SGI ICE XA Cluster
Effect of vertical shear in the zonal wind on equatorial electrojet sidebands: An observational perspective using Swarm and ICON Data
2024-10-01T00:00:00Z
publication
https://n2t.net/ark:/85065/d7bk1hpn
https://doi.org/10.1029/2024JA032678
Sreelakshmi, J.
author
Maute, Astrid
author
Richmond, Arthur D.
author
Vichare, G.
author
Harding, B. J.
author
Alken, P.
author
UCAR/NCAR - Library
publisher
The wind dynamo in the ionosphere leads to differential motion of ions and electrons, which in turn sets up electric fields and currents. Observations show that daytime lower thermospheric horizontal winds have large vertical gradients. Numerical modeling conducted approximately 50 years ago demonstrated that the zonal wind shears in the ∼130–180 km altitude range can generate off‐equatorial relative minima (dips) in the daytime height‐integrated eastward current density, appearing as westward sidebands north and south of the equatorial electrojet (EEJ). This study observationally confirms this connection for the first time by combining Ionospheric CONnection explorer zonal wind profiles and Swarm latitudinal zonal currents. We demonstrate observationally that the magnitude of the EEJ sideband current is proportional to the strength of westward turning winds with altitude in the Pedersen conductivity dominated region. Additional numerical experiments explain the importance of wind shear in different altitude regions in generating the sideband current. This study contributes to the better understanding of the neutral wind effect on the local current generation.
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2016-01-01T00:00:00Z
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<span style="font-family:Arial;font-size:10pt;font-style:normal;font-weight:normal;" data-sheets-root="1">Copyright 2024 American Geophysical Union (AGU).</span>
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