Variable winds on Venus mapped in three dimensions
We present zonal and meridional wind measurements at three altitude levels within the cloud layers of Venus from cloud tracking using images taken with the VIRTIS instrument on board Venus Express. At low latitudes, zonal winds in the Southern hemisphere are nearly constant with latitude with westwa...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2008
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| _version_ | 1826273124666048512 |
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| author | Sanchez-Lavega, A Hueso, R Piccioni, G Drossart, P Peralta, J Perez-Hoyos, S Wilson, C Taylor, F Baines, K Luz, D Erard, S Lebonnois, S |
| author_facet | Sanchez-Lavega, A Hueso, R Piccioni, G Drossart, P Peralta, J Perez-Hoyos, S Wilson, C Taylor, F Baines, K Luz, D Erard, S Lebonnois, S |
| author_sort | Sanchez-Lavega, A |
| collection | OXFORD |
| description | We present zonal and meridional wind measurements at three altitude levels within the cloud layers of Venus from cloud tracking using images taken with the VIRTIS instrument on board Venus Express. At low latitudes, zonal winds in the Southern hemisphere are nearly constant with latitude with westward velocities of 105 ms-1 at cloud-tops (altitude ∼ 66 km) and 60-70 ms-1 at the cloud-base (altitude ∼ 47 km). At high latitudes, zonal wind speeds decrease linearly with latitude with no detectable vertical wind shear (values lower than 15 ms-1), indicating the possibility of a vertically coherent vortex structure. Meridional winds at the cloud-tops are poleward with peak speed of 10 ms-1 at 55° S but below the cloud tops and averaged over the South hemisphere are found to be smaller than 5 ms-1. We also, report the detection at subpolar latitudes of wind variability due to the solar tide. Copyright 2008 by the American Geophysical Union. |
| first_indexed | 2024-03-06T22:23:24Z |
| format | Journal article |
| id | oxford-uuid:55d42922-7070-4108-aa35-a7a814185c53 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:23:24Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:55d42922-7070-4108-aa35-a7a814185c532022-03-26T16:46:39ZVariable winds on Venus mapped in three dimensionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:55d42922-7070-4108-aa35-a7a814185c53EnglishSymplectic Elements at Oxford2008Sanchez-Lavega, AHueso, RPiccioni, GDrossart, PPeralta, JPerez-Hoyos, SWilson, CTaylor, FBaines, KLuz, DErard, SLebonnois, SWe present zonal and meridional wind measurements at three altitude levels within the cloud layers of Venus from cloud tracking using images taken with the VIRTIS instrument on board Venus Express. At low latitudes, zonal winds in the Southern hemisphere are nearly constant with latitude with westward velocities of 105 ms-1 at cloud-tops (altitude ∼ 66 km) and 60-70 ms-1 at the cloud-base (altitude ∼ 47 km). At high latitudes, zonal wind speeds decrease linearly with latitude with no detectable vertical wind shear (values lower than 15 ms-1), indicating the possibility of a vertically coherent vortex structure. Meridional winds at the cloud-tops are poleward with peak speed of 10 ms-1 at 55° S but below the cloud tops and averaged over the South hemisphere are found to be smaller than 5 ms-1. We also, report the detection at subpolar latitudes of wind variability due to the solar tide. Copyright 2008 by the American Geophysical Union. |
| spellingShingle | Sanchez-Lavega, A Hueso, R Piccioni, G Drossart, P Peralta, J Perez-Hoyos, S Wilson, C Taylor, F Baines, K Luz, D Erard, S Lebonnois, S Variable winds on Venus mapped in three dimensions |
| title | Variable winds on Venus mapped in three dimensions |
| title_full | Variable winds on Venus mapped in three dimensions |
| title_fullStr | Variable winds on Venus mapped in three dimensions |
| title_full_unstemmed | Variable winds on Venus mapped in three dimensions |
| title_short | Variable winds on Venus mapped in three dimensions |
| title_sort | variable winds on venus mapped in three dimensions |
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