Effect of Vertical Shear in the Zonal Wind on Equatorial Electrojet Sidebands: An Observational Perspective Using Swarm and ICON Data

Sreelakshmi, J.; Maute, Astrid; Richmond, Arthur D.; Vichare, Geeta; Harding, Brian J.; Alken, Patrick

doi:10.1029/2024JA032678

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Effect of Vertical Shear in the Zonal Wind on Equatorial Electrojet Sidebands: An Observational Perspective Using Swarm and ICON Data

2024
By Sreelakshmi, J. ; Maute, Astrid ; Richmond, Arthur D. ; ...
Source: Journal of Geophysical Research: Space Physics, 129(10)

[PDF-2.76 MB]

Details You May Also Like

Details:

Journal Title:

Journal of Geophysical Research: Space Physics
Personal Author:

Sreelakshmi, J. ; Maute, Astrid ; Richmond, Arthur D. ; Vichare, Geeta ; Harding, Brian J. ; ... More +

Sreelakshmi, J. ; Maute, Astrid ; Richmond, Arthur D. ; Vichare, Geeta ; Harding, Brian J. ; Alken, Patrick Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NWS (National Weather Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information) ; SWPC (Space Weather Prediction Center)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NWS (National Weather Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information) ; SWPC (Space Weather Prediction Center) Less -
Description:

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.
Source:

Journal of Geophysical Research: Space Physics, 129(10)
DOI:

https://doi.org/10.1029/2024JA032678
ISSN:

2169-9380;2169-9402;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha-512:3691fd8a306c3aba94780248c4e5bddc51700d998db426941f986e4065e2ee31ae38388f23a4d2aeecdb255f803f6beb0823d01ec35ac9524613cf2a988e95e6
Download URL:

https://repository.library.noaa.gov/view/noaa/66599/noaa_66599_DS1.pdf
File Type:

No Additional Files

More +

Effect of Vertical Shear in the Zonal Wind on Equatorial Electrojet Sidebands: An Observational Perspective Using Swarm and ICON Data

Details:

Supporting Files

You May Also Like