Multi-Frequency SuperDARN HF Radar Observations of the Ionospheric Response to the October 2023 Annular Solar Eclipse

E. G. Thomas; S. G. Shepherd; B. S. R. Kunduri; D. R. Themens

doi:10.1029/2024GL112450

Multi-Frequency SuperDARN HF Radar Observations of the Ionospheric Response to the October 2023 Annular Solar Eclipse

E. G. Thomas^*
, S. G. Shepherd
, B. S. R. Kunduri
, D. R. Themens

^*Corresponding author for this work

Engineering

Research output: Contribution to journal › Letter › peer-review

29 Downloads (Pure)

Abstract

An annular solar eclipse was visible on 14 October 2023 from 15:00–21:00 UT as its path traveled across North, Central, and South America. In this letter, we present the first multi‐frequency Super Dual Auroral Radar Network (SuperDARN) observations of the bottom side ionospheric response to a solar eclipse using novel experimental mode designed for the October 2023 annular eclipse. We compare our results from the mid‐latitude Christmas Valley East radar with measurements of the vertical electron density profile from the nearby Boulder Digisonde, finding the changes in 1‐ and 2‐hop ground scatter skip distance are well correlated with the F₂‐layer density response, which lags the peak obscuration by ∼30 min. Changes in the line‐of‐sight Doppler shifts are better aligned with the time derivative of eclipse obscuration.

Original language	English
Article number	e2024GL112450
Number of pages	9
Journal	Geophysical Research Letters
Volume	51
Issue number	24
Early online date	12 Dec 2024
DOIs	https://doi.org/10.1029/2024GL112450
Publication status	Published - 28 Dec 2024

Bibliographical note

Copyright:
© 2024. The Author(s).

Keywords

eclipse
radar
SuperDARN

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

Access to Document

10.1029/2024GL112450Licence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

ThomasE2024MultiFinal published version, 3.15 MBLicence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

Cite this

@article{3a6ebc879a1a49d888d144bde54b97ef,

title = "Multi-Frequency SuperDARN HF Radar Observations of the Ionospheric Response to the October 2023 Annular Solar Eclipse",

abstract = "An annular solar eclipse was visible on 14 October 2023 from 15:00–21:00 UT as its path traveled across North, Central, and South America. In this letter, we present the first multi‐frequency Super Dual Auroral Radar Network (SuperDARN) observations of the bottom side ionospheric response to a solar eclipse using novel experimental mode designed for the October 2023 annular eclipse. We compare our results from the mid‐latitude Christmas Valley East radar with measurements of the vertical electron density profile from the nearby Boulder Digisonde, finding the changes in 1‐ and 2‐hop ground scatter skip distance are well correlated with the F2‐layer density response, which lags the peak obscuration by ∼30 min. Changes in the line‐of‐sight Doppler shifts are better aligned with the time derivative of eclipse obscuration.",

keywords = "eclipse, radar, SuperDARN",

author = "Thomas, \{E. G.\} and Shepherd, \{S. G.\} and Kunduri, \{B. S. R.\} and Themens, \{D. R.\}",

note = "Copyright: {\textcopyright} 2024. The Author(s).",

year = "2024",

month = dec,

day = "28",

doi = "10.1029/2024GL112450",

language = "English",

volume = "51",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "24",

}

TY - JOUR

T1 - Multi-Frequency SuperDARN HF Radar Observations of the Ionospheric Response to the October 2023 Annular Solar Eclipse

AU - Thomas, E. G.

AU - Shepherd, S. G.

AU - Kunduri, B. S. R.

AU - Themens, D. R.

PY - 2024/12/28

Y1 - 2024/12/28

N2 - An annular solar eclipse was visible on 14 October 2023 from 15:00–21:00 UT as its path traveled across North, Central, and South America. In this letter, we present the first multi‐frequency Super Dual Auroral Radar Network (SuperDARN) observations of the bottom side ionospheric response to a solar eclipse using novel experimental mode designed for the October 2023 annular eclipse. We compare our results from the mid‐latitude Christmas Valley East radar with measurements of the vertical electron density profile from the nearby Boulder Digisonde, finding the changes in 1‐ and 2‐hop ground scatter skip distance are well correlated with the F2‐layer density response, which lags the peak obscuration by ∼30 min. Changes in the line‐of‐sight Doppler shifts are better aligned with the time derivative of eclipse obscuration.

AB - An annular solar eclipse was visible on 14 October 2023 from 15:00–21:00 UT as its path traveled across North, Central, and South America. In this letter, we present the first multi‐frequency Super Dual Auroral Radar Network (SuperDARN) observations of the bottom side ionospheric response to a solar eclipse using novel experimental mode designed for the October 2023 annular eclipse. We compare our results from the mid‐latitude Christmas Valley East radar with measurements of the vertical electron density profile from the nearby Boulder Digisonde, finding the changes in 1‐ and 2‐hop ground scatter skip distance are well correlated with the F2‐layer density response, which lags the peak obscuration by ∼30 min. Changes in the line‐of‐sight Doppler shifts are better aligned with the time derivative of eclipse obscuration.

KW - eclipse

KW - radar

KW - SuperDARN

UR - https://www.scopus.com/pages/publications/85211597014

U2 - 10.1029/2024GL112450

DO - 10.1029/2024GL112450

M3 - Letter

AN - SCOPUS:85211597014

SN - 0094-8276

VL - 51

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 24

M1 - e2024GL112450

ER -

Multi-Frequency SuperDARN HF Radar Observations of the Ionospheric Response to the October 2023 Annular Solar Eclipse

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this