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Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings
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Zeitschriftentitel: | Annales Geophysicae |
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Personen und Körperschaften: | , , , |
In: | Annales Geophysicae, 33, 2015, 2, S. 235-243 |
Format: | E-Article |
Sprache: | Englisch |
veröffentlicht: |
Copernicus GmbH
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Schlagwörter: |
author_facet |
Siddiqui, T. A. Lühr, H. Stolle, C. Park, J. Siddiqui, T. A. Lühr, H. Stolle, C. Park, J. |
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author |
Siddiqui, T. A. Lühr, H. Stolle, C. Park, J. |
spellingShingle |
Siddiqui, T. A. Lühr, H. Stolle, C. Park, J. Annales Geophysicae Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Geology Astronomy and Astrophysics |
author_sort |
siddiqui, t. a. |
spelling |
Siddiqui, T. A. Lühr, H. Stolle, C. Park, J. 1432-0576 Copernicus GmbH Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Geology Astronomy and Astrophysics http://dx.doi.org/10.5194/angeo-33-235-2015 <jats:p>Abstract. It has been known for many decades that the lunar tidal influence in the equatorial electrojet (EEJ) is noticeably enhanced during Northern Hemisphere winters. Recent literature has discussed the role of stratospheric sudden warming (SSW) events behind the enhancement of lunar tides and the findings suggest a positive correlation between the lunar tidal amplitude and lower stratospheric parameters (zonal mean air temperature and zonal mean zonal wind) during SSW events. The positive correlation raises the question whether an inverse approach could also be developed which makes it possible to deduce the occurrence of SSW events before their direct observations (before 1952) from the amplitude of the lunar tides. This study presents an analysis technique based on the phase of the semi-monthly lunar tide to determine the lunar tidal modulation of the EEJ. A statistical approach using the superposed epoch analysis is also carried out to formulate a relation between the EEJ tidal amplitude and lower stratospheric parameters. Using these results, we have estimated a threshold value for the tidal wave power that could be used to identify years with SSW events from magnetic field observations. </jats:p> Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings Annales Geophysicae |
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10.5194/angeo-33-235-2015 |
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title |
Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_unstemmed |
Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_full |
Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_fullStr |
Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_full_unstemmed |
Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_short |
Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_sort |
relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on huancayo recordings |
topic |
Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Geology Astronomy and Astrophysics |
url |
http://dx.doi.org/10.5194/angeo-33-235-2015 |
publishDate |
2015 |
physical |
235-243 |
description |
<jats:p>Abstract. It has been known for many decades that the lunar tidal influence in the equatorial electrojet (EEJ) is noticeably enhanced during Northern Hemisphere winters. Recent literature has discussed the role of stratospheric sudden warming (SSW) events behind the enhancement of lunar tides and the findings suggest a positive correlation between the lunar tidal amplitude and lower stratospheric parameters (zonal mean air temperature and zonal mean zonal wind) during SSW events. The positive correlation raises the question whether an inverse approach could also be developed which makes it possible to deduce the occurrence of SSW events before their direct observations (before 1952) from the amplitude of the lunar tides. This study presents an analysis technique based on the phase of the semi-monthly lunar tide to determine the lunar tidal modulation of the EEJ. A statistical approach using the superposed epoch analysis is also carried out to formulate a relation between the EEJ tidal amplitude and lower stratospheric parameters. Using these results, we have estimated a threshold value for the tidal wave power that could be used to identify years with SSW events from magnetic field observations.
</jats:p> |
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author | Siddiqui, T. A., Lühr, H., Stolle, C., Park, J. |
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description | <jats:p>Abstract. It has been known for many decades that the lunar tidal influence in the equatorial electrojet (EEJ) is noticeably enhanced during Northern Hemisphere winters. Recent literature has discussed the role of stratospheric sudden warming (SSW) events behind the enhancement of lunar tides and the findings suggest a positive correlation between the lunar tidal amplitude and lower stratospheric parameters (zonal mean air temperature and zonal mean zonal wind) during SSW events. The positive correlation raises the question whether an inverse approach could also be developed which makes it possible to deduce the occurrence of SSW events before their direct observations (before 1952) from the amplitude of the lunar tides. This study presents an analysis technique based on the phase of the semi-monthly lunar tide to determine the lunar tidal modulation of the EEJ. A statistical approach using the superposed epoch analysis is also carried out to formulate a relation between the EEJ tidal amplitude and lower stratospheric parameters. Using these results, we have estimated a threshold value for the tidal wave power that could be used to identify years with SSW events from magnetic field observations. </jats:p> |
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spelling | Siddiqui, T. A. Lühr, H. Stolle, C. Park, J. 1432-0576 Copernicus GmbH Space and Planetary Science Earth and Planetary Sciences (miscellaneous) Atmospheric Science Geology Astronomy and Astrophysics http://dx.doi.org/10.5194/angeo-33-235-2015 <jats:p>Abstract. It has been known for many decades that the lunar tidal influence in the equatorial electrojet (EEJ) is noticeably enhanced during Northern Hemisphere winters. Recent literature has discussed the role of stratospheric sudden warming (SSW) events behind the enhancement of lunar tides and the findings suggest a positive correlation between the lunar tidal amplitude and lower stratospheric parameters (zonal mean air temperature and zonal mean zonal wind) during SSW events. The positive correlation raises the question whether an inverse approach could also be developed which makes it possible to deduce the occurrence of SSW events before their direct observations (before 1952) from the amplitude of the lunar tides. This study presents an analysis technique based on the phase of the semi-monthly lunar tide to determine the lunar tidal modulation of the EEJ. A statistical approach using the superposed epoch analysis is also carried out to formulate a relation between the EEJ tidal amplitude and lower stratospheric parameters. Using these results, we have estimated a threshold value for the tidal wave power that could be used to identify years with SSW events from magnetic field observations. </jats:p> Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings Annales Geophysicae |
spellingShingle | Siddiqui, T. A., Lühr, H., Stolle, C., Park, J., Annales Geophysicae, Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Geology, Astronomy and Astrophysics |
title | Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_full | Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_fullStr | Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_full_unstemmed | Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_short | Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
title_sort | relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on huancayo recordings |
title_unstemmed | Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings |
topic | Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Atmospheric Science, Geology, Astronomy and Astrophysics |
url | http://dx.doi.org/10.5194/angeo-33-235-2015 |