Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations
Abstract FORMOSAT‐7/COSMIC‐2 is the largest equatorial multi‐satellite constellation of six full‐size satellites to study the equatorial ionosphere. Each satellite is equipped by an ion velocity meter (IVM) instrument to provide high rate in situ plasma density observations along the low‐inclined sa...
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| Format: | Article |
| Language: | English |
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Wiley
2023-05-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2023SW003438 |
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| author | Irina Zakharenkova Iurii Cherniak John J. Braun Qian Wu |
| author_facet | Irina Zakharenkova Iurii Cherniak John J. Braun Qian Wu |
| author_sort | Irina Zakharenkova |
| collection | DOAJ |
| description | Abstract FORMOSAT‐7/COSMIC‐2 is the largest equatorial multi‐satellite constellation of six full‐size satellites to study the equatorial ionosphere. Each satellite is equipped by an ion velocity meter (IVM) instrument to provide high rate in situ plasma density observations along the low‐inclined satellite orbits at ∼530–550 km altitude. Six satellites provide an unprecedented dense coverage of the entire equatorial region around the globe and allow reliable detection of equatorial plasma bubbles (EPBs) and plasma density irregularities at different local times/longitudinal sectors simultaneously. We present a method for detection of EPBs in FORMOSAT‐7/COSMIC‐2 in situ plasma density data and construction of the global maps of EPB geolocations. The results in the form of time series and IVM‐based global Bubble Maps have a great potential for both near real‐time monitoring of space weather conditions and long‐term statistical analysis of EPB occurrence in regional or global scales. We present first FORMOSAT‐7/COSMIC‐2 derived climatological characteristics of the post‐sunset and post‐midnight EPBs occurrence probability and their apex altitudes during a period of low solar activity. Also, we demonstrate the good performance of the FORMOSAT‐7/COSMIC‐2 IVM‐based Bubble Maps when compared to optical images and ground‐based ionosonde observations. |
| format | Article |
| id | doaj-art-c4b92dcd2e2444269ada92f5fd6c0f7f |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-c4b92dcd2e2444269ada92f5fd6c0f7f2025-01-14T16:26:44ZengWileySpace Weather1542-73902023-05-01215n/an/a10.1029/2023SW003438Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density ObservationsIrina Zakharenkova0Iurii Cherniak1John J. Braun2Qian Wu3COSMIC Program Office University Corporation for Atmospheric Research Boulder CO USACOSMIC Program Office University Corporation for Atmospheric Research Boulder CO USACOSMIC Program Office University Corporation for Atmospheric Research Boulder CO USACOSMIC Program Office University Corporation for Atmospheric Research Boulder CO USAAbstract FORMOSAT‐7/COSMIC‐2 is the largest equatorial multi‐satellite constellation of six full‐size satellites to study the equatorial ionosphere. Each satellite is equipped by an ion velocity meter (IVM) instrument to provide high rate in situ plasma density observations along the low‐inclined satellite orbits at ∼530–550 km altitude. Six satellites provide an unprecedented dense coverage of the entire equatorial region around the globe and allow reliable detection of equatorial plasma bubbles (EPBs) and plasma density irregularities at different local times/longitudinal sectors simultaneously. We present a method for detection of EPBs in FORMOSAT‐7/COSMIC‐2 in situ plasma density data and construction of the global maps of EPB geolocations. The results in the form of time series and IVM‐based global Bubble Maps have a great potential for both near real‐time monitoring of space weather conditions and long‐term statistical analysis of EPB occurrence in regional or global scales. We present first FORMOSAT‐7/COSMIC‐2 derived climatological characteristics of the post‐sunset and post‐midnight EPBs occurrence probability and their apex altitudes during a period of low solar activity. Also, we demonstrate the good performance of the FORMOSAT‐7/COSMIC‐2 IVM‐based Bubble Maps when compared to optical images and ground‐based ionosonde observations.https://doi.org/10.1029/2023SW003438ionospheric irregularitiesequatorial plasma bubblestopside ionosphereion velocity meterin situ plasma density |
| spellingShingle | Irina Zakharenkova Iurii Cherniak John J. Braun Qian Wu Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations Space Weather ionospheric irregularities equatorial plasma bubbles topside ionosphere ion velocity meter in situ plasma density |
| title | Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations |
| title_full | Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations |
| title_fullStr | Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations |
| title_full_unstemmed | Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations |
| title_short | Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations |
| title_sort | global maps of equatorial plasma bubbles depletions based on formosat 7 cosmic 2 ion velocity meter plasma density observations |
| topic | ionospheric irregularities equatorial plasma bubbles topside ionosphere ion velocity meter in situ plasma density |
| url | https://doi.org/10.1029/2023SW003438 |
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