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ACP | Articles | Volume 18, issue 21
Atmos. Chem. Phys., 18, 15643-15667, 2018
https://doi.org/10.5194/acp-18-15643-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Sources, propagation, dissipation and impact of gravity waves...

Special issue: The Polar Stratosphere in a Changing Climate (POLSTRACC) (ACP/AMT...

Atmos. Chem. Phys., 18, 15643-15667, 2018
https://doi.org/10.5194/acp-18-15643-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 30 Oct 2018

Research article | 30 Oct 2018

Mesoscale fine structure of a tropopause fold over mountains

Wolfgang Woiwode et al.
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Alexander, M. J., Geller, M., McLandress, C., Polavarapu, S., Preusse, P., Sassi, F., Sato, K., Eckermann, S., Ern, M., Hertzog, A., Kawatani, Y., Pulido, M., Shaw, T. A., Sigmond, M., Vincent, R., and Watanabe, S.: Recent developments in gravity-wave effects in climate models and the global distribution of gravity-wave momentum flux from observations and models, Q. J. Roy. Meteor. Soc., 136, 1103–1124, https://doi.org/10.1002/qj.637, 2010. 
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Buss, S., Hertzog, A., Hostettler, C., Bui, T. B., Lüthi, D., and Wernli, H.: Analysis of a jet stream induced gravity wave associated with an observed ice cloud over Greenland, Atmos. Chem. Phys., 4, 1183–1200, https://doi.org/10.5194/acp-4-1183-2004, 2004. 
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GLORIA observations during two crossings of the polar front jet stream resolve the fine mesoscale structure of a tropopause fold in high detail. Tracer–tracer correlations of H2O and O3 are presented as a function of potential temperature and reveal an active mixing region. Our study confirms conceptual models of tropopause folds, validates the high quality of ECMWF IFS forecasts, and suggests that mountain waves are capable of modulating exchange processes in the vicinity of tropopause folds.
GLORIA observations during two crossings of the polar front jet stream resolve the fine...
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