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.

Alexei Korolev et al.

Status: final response (author comments only)

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

Alexei Korolev et al.

Viewed

Total article views: 378 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
278 93 7 378 25 4 6
  • HTML: 278
  • PDF: 93
  • XML: 7
  • Total: 378
  • Supplement: 25
  • BibTeX: 4
  • EndNote: 6
Views and downloads (calculated since 27 Jun 2022)
Cumulative views and downloads (calculated since 27 Jun 2022)

Viewed (geographical distribution)

Total article views: 227 (including HTML, PDF, and XML) Thereof 227 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 08 Aug 2022
Download
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.