On the fast movements of the thermosphere: an interpretation
International audience We examine the oscillations of the meridional neutral wind in the F region as seen by the EISCAT radar. We propose an interpretation in term of eddies ( tourbillons ) of typical size of a few tens to a few hundreds of kilometers. The observed rotation velocity is a few hundred...
Main Authors: | , |
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Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2000
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Subjects: | |
Online Access: | https://hal.science/hal-00329172 https://hal.science/hal-00329172/document https://hal.science/hal-00329172/file/angeo-18-1651-2000.pdf |
Summary: | International audience We examine the oscillations of the meridional neutral wind in the F region as seen by the EISCAT radar. We propose an interpretation in term of eddies ( tourbillons ) of typical size of a few tens to a few hundreds of kilometers. The observed rotation velocity is a few hundreds of meters per second. We suggest that the tourbillons are a common feature of thermospheric movements. We propose an optical experiment to check the validity of this assumption. Key words: Atmospheric composition and structure (thermosphere · composition and chemistry) · Ionosphere (ionosphere · atmosphere interactions) |
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