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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Short summary
Sensitivities and variability of upper tropospheric flow (~10 km height) resulting immediately and as a direct consequence of (thunder)storm activity have been modeled in detail down to resolutions of 100–200 m and explored for different (organisation/) storm types. It is shown that the amount of water condensation explains much of emerging variability in upper atmospheric flow. Part of the effects on the nearby upper atmospheric flow is suggested to be explained by (organisation/) storm type.
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https://doi.org/10.5194/acp-2020-1142
https://doi.org/10.5194/acp-2020-1142

  23 Nov 2020

23 Nov 2020

Review status: this preprint is currently under review for the journal ACP.

Analysis of variability in divergence and turn-over induced by three idealized convective systems with a 3D cloud resolving model

Edward Groot and Holger Tost Edward Groot and Holger Tost
  • Institut für Physik der Atmosphäre, Johannes Gutenberg Universität, Johannes-Joachim-Becher-Weg 21, Mainz, Germany

Abstract. The sensitivity of upper tropospheric and lower stratospheric convective outflows and related divergence fields is analysed using an ensemble of cloud resolving model (CM1) simulations in LES-mode including various physically manipulated simulations for three different convective systems initialized with an idealized trigger. The main goal of this study is to assess to what extend the divergence field depends on cloud microphysical processes, the mode of convection and on the processes of convective momentum transport and moist static energy redistribution. We find that latent heat release (representing the microphysical uncertainty) plays an essential role by explaining much of magnitude of the divergence field that will be formed. Convective organisation explains another important fraction of the variability in the divergence field that is formed by a convective system and behaves non-linearly, likely partly via condensation and subsequent (re-)evaporation/sublimation. The detrainment of stratospheric air also shows large sensitivity among the experiments.

Edward Groot and Holger Tost

 
Status: open (until 11 Feb 2021)
Status: open (until 11 Feb 2021)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Edward Groot and Holger Tost

Edward Groot and Holger Tost

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Short summary
Sensitivities and variability of upper tropospheric flow (~10 km height) resulting immediately and as a direct consequence of (thunder)storm activity have been modeled in detail down to resolutions of 100–200 m and explored for different (organisation/) storm types. It is shown that the amount of water condensation explains much of emerging variability in upper atmospheric flow. Part of the effects on the nearby upper atmospheric flow is suggested to be explained by (organisation/) storm type.
Citation
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