Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 5.414
IF5.414
IF 5-year value: 5.958
IF 5-year
5.958
CiteScore value: 9.7
CiteScore
9.7
SNIP value: 1.517
SNIP1.517
IPP value: 5.61
IPP5.61
SJR value: 2.601
SJR2.601
Scimago H <br class='widget-line-break'>index value: 191
Scimago H
index
191
h5-index value: 89
h5-index89
Preprints
https://doi.org/10.5194/acp-2020-136
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2020-136
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  14 Apr 2020

14 Apr 2020

Review status
A revised version of this preprint is currently under review for the journal ACP.

On the ice-nucleating potential of warm hydrometeors in mixed-phase clouds

Michael Krayer1, Agathe Chouippe1,a, Markus Uhlmann1, Jan Dušek2, and Thomas Leisner3 Michael Krayer et al.
  • 1Institute for Hydromechanics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
  • 2ICube, Fluid Mechanics Group, Université de Strasbourg, Strasbourg, France
  • 3Institute of Meteorology and Climate Research, Atmospheric Aerosol Research Department, Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
  • anow at: ICube, Fluid Mechanics Group, Université de Strasbourg, Strasbourg, France

Abstract. The question whether or not the presence of warm hydrometeors in clouds may play a significant role in the nucleation of new ice particles has been debated for several decades. While the early works of Fukuta and Lee (1986) and Baker (1991) indicated that it might be irrelevant, the more recent study of Prabhakaran et al. (2019) suggested otherwise. In this work, we are aiming to quantify the ice-nucleating potential using high-fidelity flow simulation techniques around a single hydrometeor and use favorable considerations to upscale the effects to a collective of ice particles in clouds. While we find that ice nucleation may be enhanced in the vicinity of a warm hydrometeor by several orders of magnitude and that the affected volume of air is much larger than previously estimated, it is very unlikely that this effect alone causes the rapid enhancement of ice nucleation observed in some types of clouds, mainly due to the low initial volumetric ice concentration. Nonetheless, it is suggested to implement this effect into existing cloud models in order to investigate second-order effects such as ice nucleus preactivation or enhancement after the onset of glaciation.

Michael Krayer et al.

Interactive discussion

Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Michael Krayer et al.

Michael Krayer et al.

Viewed

Total article views: 415 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
308 97 10 415 11 9
  • HTML: 308
  • PDF: 97
  • XML: 10
  • Total: 415
  • BibTeX: 11
  • EndNote: 9
Views and downloads (calculated since 14 Apr 2020)
Cumulative views and downloads (calculated since 14 Apr 2020)

Viewed (geographical distribution)

Total article views: 332 (including HTML, PDF, and XML) Thereof 330 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 19 Oct 2020
Publications Copernicus
Download
Short summary
We address the phenomenon of ice enhancement in the vicinity of warm hydrometeors using highly-accurate flow simulation techniques. It is found that the transiently supersaturated zones induced by the hydrometeor's wake are by far larger than what has been previously estimated. The ice enhancement is quantified on the micro- and macroscale and its relevance is discussed. The provided results may contribute to a (currently unavailable) parametrization of the phenomenon.
We address the phenomenon of ice enhancement in the vicinity of warm hydrometeors using...
Citation
Altmetrics