The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods
Abstract We present a study on the relationship between upward propagating gravity waves and ionospheric irregularities. Gravity waves (GWs) are identified from Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite temperature measurements and nighttime ionospheric irregularit...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-11-01
|
| Series: | Space Weather |
| Online Access: | https://doi.org/10.1029/2021SW002715 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841536471444488192 |
|---|---|
| author | Ephrem B. Seba Melessew Nigussie Nigussie M. Giday Mark B. Moldwin |
| author_facet | Ephrem B. Seba Melessew Nigussie Nigussie M. Giday Mark B. Moldwin |
| author_sort | Ephrem B. Seba |
| collection | DOAJ |
| description | Abstract We present a study on the relationship between upward propagating gravity waves and ionospheric irregularities. Gravity waves (GWs) are identified from Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite temperature measurements and nighttime ionospheric irregularities are observed from the three Swarm satellites. Using these two independent set of measurements, we investigate the relationship between gravity waves and ionospheric irregularities on both equinox and solstice seasons for the years 2018–2019. The results show, post‐sunset gravity wave characteristics are important in understanding the variability of global nighttime equatorial plasma density irregularities. We also find out that the pre‐midnight and post‐midnight characteristics of ionospheric irregularities show global westward shift in the occurrence of ionospheric irregularities. Upward propagating gravity waves also show three dominant peaks longitudinally with the strongest being between American and African longitudinal sectors. Strongest gravity wave amplitudes are associated with strongest plasma irregularities. GW suppression is observed around equatorial regions at stratopause region in our measurements which are commonly observed at polar and higher latitudinal regions in many studies. We also observe that, ionospheric irregularities are strongest when GWs are relatively less suppressed. |
| format | Article |
| id | doaj-art-377c728f404b46e7aa62b5b12c0e972d |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2021-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-377c728f404b46e7aa62b5b12c0e972d2025-01-14T16:27:04ZengWileySpace Weather1542-73902021-11-011911n/an/a10.1029/2021SW002715The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum PeriodsEphrem B. Seba0Melessew Nigussie1Nigussie M. Giday2Mark B. Moldwin3Space Science and Applications Research Development Ethiopian Space Science and Technology Institute Addis Ababa EthiopiaPhysics Department Washera Geospace and Radar Science Laboratory Bahir Dar University Bahir Dar EthiopiaSpace Science and Applications Research Development Ethiopian Space Science and Technology Institute Addis Ababa EthiopiaClimate and Space Sciences and Engineering University of Michigan Ann Arbor MI USAAbstract We present a study on the relationship between upward propagating gravity waves and ionospheric irregularities. Gravity waves (GWs) are identified from Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite temperature measurements and nighttime ionospheric irregularities are observed from the three Swarm satellites. Using these two independent set of measurements, we investigate the relationship between gravity waves and ionospheric irregularities on both equinox and solstice seasons for the years 2018–2019. The results show, post‐sunset gravity wave characteristics are important in understanding the variability of global nighttime equatorial plasma density irregularities. We also find out that the pre‐midnight and post‐midnight characteristics of ionospheric irregularities show global westward shift in the occurrence of ionospheric irregularities. Upward propagating gravity waves also show three dominant peaks longitudinally with the strongest being between American and African longitudinal sectors. Strongest gravity wave amplitudes are associated with strongest plasma irregularities. GW suppression is observed around equatorial regions at stratopause region in our measurements which are commonly observed at polar and higher latitudinal regions in many studies. We also observe that, ionospheric irregularities are strongest when GWs are relatively less suppressed.https://doi.org/10.1029/2021SW002715 |
| spellingShingle | Ephrem B. Seba Melessew Nigussie Nigussie M. Giday Mark B. Moldwin The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods Space Weather |
| title | The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods |
| title_full | The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods |
| title_fullStr | The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods |
| title_full_unstemmed | The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods |
| title_short | The Relationship Between Upward Propagating Atmospheric Gravity Waves and Ionospheric Irregularities During Solar Minimum Periods |
| title_sort | relationship between upward propagating atmospheric gravity waves and ionospheric irregularities during solar minimum periods |
| url | https://doi.org/10.1029/2021SW002715 |
| work_keys_str_mv | AT ephrembseba therelationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT melessewnigussie therelationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT nigussiemgiday therelationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT markbmoldwin therelationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT ephrembseba relationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT melessewnigussie relationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT nigussiemgiday relationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods AT markbmoldwin relationshipbetweenupwardpropagatingatmosphericgravitywavesandionosphericirregularitiesduringsolarminimumperiods |