Preprints
https://doi.org/10.5194/egusphere-2022-491
https://doi.org/10.5194/egusphere-2022-491
 
27 Jun 2022
27 Jun 2022

Observation of secondary ice production in clouds at low temperatures

Alexei Korolev1, Paul DeMott2, Ivan Heckman1, Mengistu Wolde3, Earle Williams4, David J. Smalley5, and Michael F. Donovan5 Alexei Korolev et al.
  • 1Environment and Climate Change Canada, Toronto, ON Canada
  • 2Colorado State University, Fort Collins, CO, USA
  • 3National Research Council Canada, Ottawa, ON, Canada
  • 4Massachusetts Institute of Technology, Boston, MA, USA
  • 5MIT Lincoln Laboratory, Lexington, MA, USA

Abstract. Ice particles play an important role in precipitation formation and radiation balance. Therefore, an accurate description of ice initiation in the atmosphere is of great importance for weather prediction models and climate simulations. Despite the abundance of ice crystals in the atmosphere, the mechanisms for their formation remain not well understood. There are two major sets of mechanisms of ice initiation in the atmosphere: primary nucleation and secondary ice production. Secondary ice production occurs in the presence of preexisting ice, which results in an enhancement of the concentration of ice particles. Until present, secondary ice production was mainly associated with the rime-splintering mechanism, known as the Hallett-Mossop process, which is active in a relatively narrow temperature range from -3 °C to -8 °C. The existence of the Hallett-Mossop process was well supported by in-situ observations. The present study provides the first in-situ observation of secondary ice production at temperatures as low as -27 °C, which is well outside the range of the Hallett-Mossop process. This observation expands our knowledge of the temperature range of initiation of secondary ice in clouds. The obtained results are intended to stimulate laboratory and theoretical studies to develop physically based parameterizations for weather prediction and climate models.

Journal article(s) based on this preprint

12 Oct 2022
Observation of secondary ice production in clouds at low temperatures
Alexei Korolev, Paul J. DeMott, Ivan Heckman, Mengistu Wolde, Earle Williams, David J. Smalley, and Michael F. Donovan
Atmos. Chem. Phys., 22, 13103–13113, https://doi.org/10.5194/acp-22-13103-2022,https://doi.org/10.5194/acp-22-13103-2022, 2022
Short summary

Alexei Korolev et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Review of the study “Observation of secondary ice production in clouds at low temperatures”, authored by Alexei Korolev, Paul DeMott, Ivan Heckman, Mengistu Wolde, Earle Williams, David J. Smalley and Michael F. Donovan.', Alex Khain, 07 Jul 2022
  • RC1: 'Comment on egusphere-2022-491', Thomas Leisner, 25 Jul 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Review of the study “Observation of secondary ice production in clouds at low temperatures”, authored by Alexei Korolev, Paul DeMott, Ivan Heckman, Mengistu Wolde, Earle Williams, David J. Smalley and Michael F. Donovan.', Alex Khain, 07 Jul 2022
  • RC1: 'Comment on egusphere-2022-491', Thomas Leisner, 25 Jul 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Alexei Korolev on behalf of the Authors (19 Sep 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (22 Sep 2022) by Alexander Laskin

Journal article(s) based on this preprint

12 Oct 2022
Observation of secondary ice production in clouds at low temperatures
Alexei Korolev, Paul J. DeMott, Ivan Heckman, Mengistu Wolde, Earle Williams, David J. Smalley, and Michael F. Donovan
Atmos. Chem. Phys., 22, 13103–13113, https://doi.org/10.5194/acp-22-13103-2022,https://doi.org/10.5194/acp-22-13103-2022, 2022
Short summary

Alexei Korolev et al.

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
The present study provides the first in-situ observation of secondary ice production at temperatures as low as -27 °C, which is well outside the range of the Hallett-Mossop process (-3 °C to -8 °C). This observation expands our knowledge of the temperature range of initiation of secondary ice in clouds. The obtained results are intended to stimulate laboratory and theoretical studies to develop physically based parameterizations for weather prediction and climate models.