Investigation of the relationship between the spatial gradient of total electron content (TEC) between two nearby stations and the occurrence of ionospheric irregularities

Dugassa, Teshome; Bosco Habarulema, John; Nigussie, Melessew

doi:https://doi.org/10.5194/angeo-37-1161-2019

Articles | Volume 37, issue 6

https://doi.org/10.5194/angeo-37-1161-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Vertical coupling in the atmosphere–ionosphere system

https://doi.org/10.5194/angeo-37-1161-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 37, issue 6

Regular paper

|

13 Dec 2019

Regular paper |

| 13 Dec 2019

Investigation of the relationship between the spatial gradient of total electron content (TEC) between two nearby stations and the occurrence of ionospheric irregularities

Teshome Dugassa, John Bosco Habarulema, and Melessew Nigussie

Data sets

Geomagnetism CIRES http://geomag.org/models/PPEFM/RealtimeEF.html

Geomagnetic Indices International Service of Geomagnetic Indices http://isgi.unistra.fr/data_download.php

Short summary

The relation between the occurrence of ionospheric irregularities and the spatial gradient of TEC derived from two closely located stations, located within the equatorial region over Ethiopia, was investigated. The relationship between σ(∆TEC/∆long) and ROTI_ave correlate linearly with correlation coefficients of C = 0.7975 and C = 0.7915 over ASAB and DEBK, respectively. In addition to latitudinal gradients, the longitudinal gradient of TEC has a significant contribution to the TEC fluctuations.