Articles | Volume 15, issue 12
https://doi.org/10.5194/acp-15-6577-2015
https://doi.org/10.5194/acp-15-6577-2015
Research article
 | 
16 Jun 2015
Research article |  | 16 Jun 2015

Momentum forcing of the quasi-biennial oscillation by equatorial waves in recent reanalyses

Y.-H. Kim and H.-Y. Chun

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AR by Young-Ha Kim on behalf of the Authors (20 May 2015)  Author's response    Manuscript
ED: Publish as is (31 May 2015) by Peter Haynes
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Short summary
The momentum forcing of the stratospheric quasi-biennial oscillation (QBO) by equatorial waves is estimated using recent reanalysis data sets. The Kelvin wave produces primary forcing of the QBO in the easterly-to-westerly transition phase below 30hPa, whereas mesoscale gravity waves produce larger forcing than the Kelvin wave above 30hPa. Still, the recent reanalyses underestimate the forcing by the large-scale equatorial waves.
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