Articles | Volume 33, issue 4
https://doi.org/10.5194/angeo-33-483-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-33-483-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular paper
| 
29 Apr 2015
Regular paper |
| 29 Apr 2015
Driving of the SAO by gravity waves as observed from satellite
Institut für Energie- und Klimaforschung – Stratosphäre (IEK–7), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
P. Preusse
Institut für Energie- und Klimaforschung – Stratosphäre (IEK–7), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
Institut für Energie- und Klimaforschung – Stratosphäre (IEK–7), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
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Latest update: 24 Apr 2024
Short summary
The forcings of the semiannual oscillation (SAO) of the tropical zonal wind in the stratopause region are investigated based on ERA-Interim reanalysis and HIRDLS satellite observations. In particular, the SAO driving by mesoscale gravity waves is estimated directly from satellite observations of gravity waves. Our study confirms previous indirect evidence that planetary waves dominate during the westward driving of the SAO, while gravity waves mainly provide eastward forcing.
The forcings of the semiannual oscillation (SAO) of the tropical zonal wind in the stratopause...
