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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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This paper reports on a project to compare the representation of the semiannual oscillation (SAO) among six major global atmospheric reanalyses and with recent satellite observations. The differences among the zonal mean zonal wind as represented by the various reanalyses display a prominent equatorial maximum that increases with height. It is shown that assimilation of satellite temperature measurements is crucial for the realistic representation of the tropical upper stratospheric circulation.
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ACP | Articles | Volume 20, issue 14
Atmos. Chem. Phys., 20, 9115–9133, 2020
https://doi.org/10.5194/acp-20-9115-2020

Special issue: The SPARC Reanalysis Intercomparison Project (S-RIP) (ACP/ESSD...

Atmos. Chem. Phys., 20, 9115–9133, 2020
https://doi.org/10.5194/acp-20-9115-2020

Research article 31 Jul 2020

Research article | 31 Jul 2020

Representation of the equatorial stratopause semiannual oscillation in global atmospheric reanalyses

Yoshio Kawatani et al.

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Short summary
This paper reports on a project to compare the representation of the semiannual oscillation (SAO) among six major global atmospheric reanalyses and with recent satellite observations. The differences among the zonal mean zonal wind as represented by the various reanalyses display a prominent equatorial maximum that increases with height. It is shown that assimilation of satellite temperature measurements is crucial for the realistic representation of the tropical upper stratospheric circulation.
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Final-revised paper
Preprint