Articles | Volume 18, issue 14
Atmos. Chem. Phys., 18, 10799–10823, 2018
https://doi.org/10.5194/acp-18-10799-2018
Atmos. Chem. Phys., 18, 10799–10823, 2018
https://doi.org/10.5194/acp-18-10799-2018

Research article 31 Jul 2018

Research article | 31 Jul 2018

Impact of gravity waves on the motion and distribution of atmospheric ice particles

Aurélien Podglajen et al.

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Using a simplified analytical setup, we show that the temperature and wind fluctuations due to an atmospheric gravity wave can induce a localization of ice crystals in a specific region of the wave. In that region, the air is nearly saturated and the vertical wind anomaly is positive. As a consequence, reversible gravity wave motions have an irreversible impact (mean upward motion) on the ice crystals. Our findings are consistent with observations of cirrus clouds near the tropical tropopause.
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