Articles | Volume 16, issue 15
Atmos. Chem. Phys., 16, 9983–10019, 2016
https://doi.org/10.5194/acp-16-9983-2016
Atmos. Chem. Phys., 16, 9983–10019, 2016
https://doi.org/10.5194/acp-16-9983-2016

Research article 09 Aug 2016

Research article | 09 Aug 2016

Satellite observations of middle atmosphere gravity wave absolute momentum flux and of its vertical gradient during recent stratospheric warmings

Manfred Ern et al.

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Short summary
Sudden stratospheric warmings (SSWs) influence the atmospheric circulation over a large range of altitudes and latitudes. We investigate the global distribution of small-scale gravity waves (GWs) during SSWs as derived from 13 years of satellite observations. We find that GWs may play an important role for triggering SSWs by preconditioning the polar vortex, as well as during long-lasting vortex recovery phases after SSWs. The GW distribution during SSWs displays strong day-to-day variability.
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