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Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum

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Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum. / Bolaji, O.S.; Owolabi, O; Falayi, E et al.
In: Annales Geophysicae, Vol. 35, 20.01.2017, p. 123-132.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Bolaji, OS, Owolabi, O, Falayi, E, Jimoh, E, Kotoye, A, Odeyemi, O, Rabiu, B, Doherty, P, Yizengaw, E, Yamazaki, Y, Adeniyi, J, Kaka, R & Onanuga, K 2017, 'Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum', Annales Geophysicae, vol. 35, pp. 123-132. https://doi.org/10.5194/angeo-35-123-2017

APA

Bolaji, O. S., Owolabi, O., Falayi, E., Jimoh, E., Kotoye, A., Odeyemi, O., Rabiu, B., Doherty, P., Yizengaw, E., Yamazaki, Y., Adeniyi, J., Kaka, R., & Onanuga, K. (2017). Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum. Annales Geophysicae, 35, 123-132. https://doi.org/10.5194/angeo-35-123-2017

Vancouver

Bolaji OS, Owolabi O, Falayi E, Jimoh E, Kotoye A, Odeyemi O et al. Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum. Annales Geophysicae. 2017 Jan 20;35:123-132. doi: 10.5194/angeo-35-123-2017

Author

Bolaji, O.S. ; Owolabi, O ; Falayi, E et al. / Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum. In: Annales Geophysicae. 2017 ; Vol. 35. pp. 123-132.

Bibtex

@article{bed2cfb3bfba4163ab0194f8959cc408,
title = "Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum",
abstract = "In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data Acquisition System, MAGDAS) over Africa and the Middle East (Africa–Middle East) during the quietest periods. Apart from further confirmation of the roles of equatorial electrojet (EEJ) and integrated equatorial electrojet (IEEJ) in determining hemispheric extent of EIA crest over higher latitudes, we found some additional roles played by thermospheric meridional neutral wind. Interestingly, the simultaneous observations of EIA crests in both hemispheres of Africa–Middle East showed different morphology compared to that reported over Asia. We also observed interesting latitudinal twin EIA crests domiciled at the low latitudes of the Northern Hemisphere. Our results further showed that weak EEJ strength associated with counter electrojet (CEJ) during sunrise hours could also trigger twin EIA crests over higher latitudes.",
author = "O.S. Bolaji and O Owolabi and E Falayi and E Jimoh and A Kotoye and O Odeyemi and B Rabiu and P Doherty and E Yizengaw and Yosuke Yamazaki and J Adeniyi and R Kaka and K Onanuga",
year = "2017",
month = jan,
day = "20",
doi = "10.5194/angeo-35-123-2017",
language = "English",
volume = "35",
pages = "123--132",
journal = "Annales Geophysicae",
issn = "0992-7689",
publisher = "European Geosciences Union",

}

RIS

TY - JOUR

T1 - Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum

AU - Bolaji, O.S.

AU - Owolabi, O

AU - Falayi, E

AU - Jimoh, E

AU - Kotoye, A

AU - Odeyemi, O

AU - Rabiu, B

AU - Doherty, P

AU - Yizengaw, E

AU - Yamazaki, Yosuke

AU - Adeniyi, J

AU - Kaka, R

AU - Onanuga, K

PY - 2017/1/20

Y1 - 2017/1/20

N2 - In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data Acquisition System, MAGDAS) over Africa and the Middle East (Africa–Middle East) during the quietest periods. Apart from further confirmation of the roles of equatorial electrojet (EEJ) and integrated equatorial electrojet (IEEJ) in determining hemispheric extent of EIA crest over higher latitudes, we found some additional roles played by thermospheric meridional neutral wind. Interestingly, the simultaneous observations of EIA crests in both hemispheres of Africa–Middle East showed different morphology compared to that reported over Asia. We also observed interesting latitudinal twin EIA crests domiciled at the low latitudes of the Northern Hemisphere. Our results further showed that weak EEJ strength associated with counter electrojet (CEJ) during sunrise hours could also trigger twin EIA crests over higher latitudes.

AB - In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data Acquisition System, MAGDAS) over Africa and the Middle East (Africa–Middle East) during the quietest periods. Apart from further confirmation of the roles of equatorial electrojet (EEJ) and integrated equatorial electrojet (IEEJ) in determining hemispheric extent of EIA crest over higher latitudes, we found some additional roles played by thermospheric meridional neutral wind. Interestingly, the simultaneous observations of EIA crests in both hemispheres of Africa–Middle East showed different morphology compared to that reported over Asia. We also observed interesting latitudinal twin EIA crests domiciled at the low latitudes of the Northern Hemisphere. Our results further showed that weak EEJ strength associated with counter electrojet (CEJ) during sunrise hours could also trigger twin EIA crests over higher latitudes.

U2 - 10.5194/angeo-35-123-2017

DO - 10.5194/angeo-35-123-2017

M3 - Journal article

VL - 35

SP - 123

EP - 132

JO - Annales Geophysicae

JF - Annales Geophysicae

SN - 0992-7689

ER -