Day-to-day variations of migrating semidiurnal tide in the mesosphere and thermosphere
By using a general circulation model, we examine behavior of the migrating semidiurnal tide for solar cycle moderate and geomagnetically quiet conditions. We investigate day-to-day variabilities of the migrating semidiurnal tide in the mesosphere and thermosphere and their relation with the migratin...
| Main Authors: | , |
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| Format: | Report |
| Language: | English |
| Published: |
Department of Earth and Planetary Sciences, Faculty of Sciences,Kyushu University/Department of Geophysics, Faculty of Science, Tohoku University
2006
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| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2519 http://id.nii.ac.jp/1291/00002519/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2519&item_no=1&attribute_id=18&file_no=1 |
| Summary: | By using a general circulation model, we examine behavior of the migrating semidiurnal tide for solar cycle moderate and geomagnetically quiet conditions. We investigate day-to-day variabilities of the migrating semidiurnal tide in the mesosphere and thermosphere and their relation with the migrating semidiurnal tide generated in the lower atmosphere. The results show that day-to-day variations of the migrating semidiurnal tide are evident from the tropopause to the thermosphere. Fluctuations of the migrating semidiurnal amplitude with periods of 10-12 and 25 days are found at altitudes from 20 to 250km, indicating dynamical coupling between the mesosphere and thermosphere and the lower atmosphere. |
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