Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming
Abstract This study examines the ionosphere response to gravitational forces of the lunar phase and dynamical disturbances of the stratospheric sudden warmings (SSWs). The total electron content (TEC) of global ionosphere maps is employed to examine responses of the equatorial ionization anomaly (EI...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-94326-x |
| _version_ | 1818570422317219840 |
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| author | Tsung-Yu Wu Jann-Yenq Liu Loren C. Chang Chien‐Hung Lin Yi-Chung Chiu |
| author_facet | Tsung-Yu Wu Jann-Yenq Liu Loren C. Chang Chien‐Hung Lin Yi-Chung Chiu |
| author_sort | Tsung-Yu Wu |
| collection | DOAJ |
| description | Abstract This study examines the ionosphere response to gravitational forces of the lunar phase and dynamical disturbances of the stratospheric sudden warmings (SSWs). The total electron content (TEC) of global ionosphere maps is employed to examine responses of the equatorial ionization anomaly (EIA) crests to lunar phases and twelve SSW events during 2000–2013. The most prominent feature in the ionosphere is the EIA, characterized by two enhanced TEC crests at low latitudes straddling the magnetic equator, which can be used to observe ionospheric plasma dynamics and structures. Results show that the EIA crest appearance time on new/full moons (first/third quarters) leads (lags) that of the overall 14-year average, which causes a pattern of TEC morning enhancements (suppressions) and afternoon suppressions (enhancements). A statistical analysis shows that SSWs can also significantly cause the early appearance of EIA crests, regardless of the lunar phase. Thus, both lunar phase and SSWs can significantly modulate the appearance time of EIA crest and ionospheric plasma dynamics and structures. |
| first_indexed | 2024-12-14T13:41:04Z |
| format | Article |
| id | doaj.art-63b4a6437265446b9bcf001b79a1382a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T13:41:04Z |
| publishDate | 2021-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-63b4a6437265446b9bcf001b79a1382a2022-12-21T22:59:26ZengNature PortfolioScientific Reports2045-23222021-07-011111910.1038/s41598-021-94326-xEquatorial ionization anomaly response to lunar phase and stratospheric sudden warmingTsung-Yu Wu0Jann-Yenq Liu1Loren C. Chang2Chien‐Hung Lin3Yi-Chung Chiu4Center for Astronautical Physics and Engineering, National Central UniversityCenter for Astronautical Physics and Engineering, National Central UniversityCenter for Astronautical Physics and Engineering, National Central UniversityDepartment of Earth Science, National Cheng Kung UniversityDepartment of Space Science and Engineering, National Central UniversityAbstract This study examines the ionosphere response to gravitational forces of the lunar phase and dynamical disturbances of the stratospheric sudden warmings (SSWs). The total electron content (TEC) of global ionosphere maps is employed to examine responses of the equatorial ionization anomaly (EIA) crests to lunar phases and twelve SSW events during 2000–2013. The most prominent feature in the ionosphere is the EIA, characterized by two enhanced TEC crests at low latitudes straddling the magnetic equator, which can be used to observe ionospheric plasma dynamics and structures. Results show that the EIA crest appearance time on new/full moons (first/third quarters) leads (lags) that of the overall 14-year average, which causes a pattern of TEC morning enhancements (suppressions) and afternoon suppressions (enhancements). A statistical analysis shows that SSWs can also significantly cause the early appearance of EIA crests, regardless of the lunar phase. Thus, both lunar phase and SSWs can significantly modulate the appearance time of EIA crest and ionospheric plasma dynamics and structures.https://doi.org/10.1038/s41598-021-94326-x |
| spellingShingle | Tsung-Yu Wu Jann-Yenq Liu Loren C. Chang Chien‐Hung Lin Yi-Chung Chiu Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming Scientific Reports |
| title | Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming |
| title_full | Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming |
| title_fullStr | Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming |
| title_full_unstemmed | Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming |
| title_short | Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming |
| title_sort | equatorial ionization anomaly response to lunar phase and stratospheric sudden warming |
| url | https://doi.org/10.1038/s41598-021-94326-x |
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