Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities
Abstract The navigation and radio communication systems experience significant disruptions due to post‐sunset equatorial ionospheric irregularities. There is ongoing debate regarding the impact of meridional/trans‐equatorial wind speed on these irregularities, though it is widely agreed that the Pre...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-01-01
|
| Series: | Space Weather |
| Online Access: | https://doi.org/10.1029/2024SW003872 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832583574968074240 |
|---|---|
| author | Bantayehu Aderaw Melessew Nigussie |
| author_facet | Bantayehu Aderaw Melessew Nigussie |
| author_sort | Bantayehu Aderaw |
| collection | DOAJ |
| description | Abstract The navigation and radio communication systems experience significant disruptions due to post‐sunset equatorial ionospheric irregularities. There is ongoing debate regarding the impact of meridional/trans‐equatorial wind speed on these irregularities, though it is widely agreed that the Pre‐Reversal Enhancement (PRE) plasma vertical drift velocity plays a key role in their occurrence. In this study, it is examined how F‐layer meridional neutral winds affect the post‐sunset equatorial ionospheric irregularities using GOCE satellite data in the years 2012–2013 employing statistical analysis. The Rate of Total Electron content (TEC) Index (ROTI) is commonly used to monitor ionospheric irregularities. The finding reveals a strong correlation between ROTI values and the differences in meridional wind speeds at the north and south equatorial ionization anomaly (EIA) crests. Observations show that smaller speed differences (less than ∼5 m/s) between the north and south EIA crests support the formation of post‐sunset ionospheric irregularities, while larger speed differences (more than 5 m/s) do not support irregularity formation. |
| format | Article |
| id | doaj-art-1ac43fe5dddd44bfa5f704bd61c65ab4 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-1ac43fe5dddd44bfa5f704bd61c65ab42025-01-28T10:40:45ZengWileySpace Weather1542-73902025-01-01231n/an/a10.1029/2024SW003872Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric IrregularitiesBantayehu Aderaw0Melessew Nigussie1Department of Physics Washera Geospace and Radar Science Research Laboratory Bahir Dar University Bahir Dar EthiopiaDepartment of Physics Washera Geospace and Radar Science Research Laboratory Bahir Dar University Bahir Dar EthiopiaAbstract The navigation and radio communication systems experience significant disruptions due to post‐sunset equatorial ionospheric irregularities. There is ongoing debate regarding the impact of meridional/trans‐equatorial wind speed on these irregularities, though it is widely agreed that the Pre‐Reversal Enhancement (PRE) plasma vertical drift velocity plays a key role in their occurrence. In this study, it is examined how F‐layer meridional neutral winds affect the post‐sunset equatorial ionospheric irregularities using GOCE satellite data in the years 2012–2013 employing statistical analysis. The Rate of Total Electron content (TEC) Index (ROTI) is commonly used to monitor ionospheric irregularities. The finding reveals a strong correlation between ROTI values and the differences in meridional wind speeds at the north and south equatorial ionization anomaly (EIA) crests. Observations show that smaller speed differences (less than ∼5 m/s) between the north and south EIA crests support the formation of post‐sunset ionospheric irregularities, while larger speed differences (more than 5 m/s) do not support irregularity formation.https://doi.org/10.1029/2024SW003872 |
| spellingShingle | Bantayehu Aderaw Melessew Nigussie Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities Space Weather |
| title | Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities |
| title_full | Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities |
| title_fullStr | Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities |
| title_full_unstemmed | Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities |
| title_short | Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities |
| title_sort | statistical study on the effect of meridional neutral wind on the occurrence of post sunset equatorial ionospheric irregularities |
| url | https://doi.org/10.1029/2024SW003872 |
| work_keys_str_mv | AT bantayehuaderaw statisticalstudyontheeffectofmeridionalneutralwindontheoccurrenceofpostsunsetequatorialionosphericirregularities AT melessewnigussie statisticalstudyontheeffectofmeridionalneutralwindontheoccurrenceofpostsunsetequatorialionosphericirregularities |