Secondary Ice Formation in Idealised Deep Convection-Source of Primary Ice and Impact on Glaciation

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Annette K Miltenberger
  • Tim Luettmer
  • Christoph Siewert
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000541801900051&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.3390/atmos11050542
eISSN
2073-4433
Externe Identifier
  • Clarivate Analytics Document Solution ID: MA3EZ
Ausgabe der Veröffentlichung
5
Zeitschrift
ATMOSPHERE
Schlüsselwörter
  • secondary ice production
  • deep convection
  • ice-nucleating particles
  • rain freezing
Artikelnummer
ARTN 542
Datum der Veröffentlichung
2020
Status
Published
Titel
Secondary Ice Formation in Idealised Deep Convection-Source of Primary Ice and Impact on Glaciation
Sub types
  • Article
Ausgabe der Zeitschrift
11

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p>Secondary ice production via rime-splintering is considered to be an important process for rapid glaciation and high ice crystal numbers observed in mixed-phase convective clouds. An open question is how rime-splintering is triggered in the relatively short time between cloud formation and observations of high ice crystal numbers. We use idealised simulations of a deep convective cloud system to investigate the thermodynamic and cloud microphysical evolution of air parcels, in which the model predicts secondary ice formation. The Lagrangian analysis suggests that the “in-situ” formation of rimers either by growth of primary ice or rain freezing does not play a major role in triggering secondary ice formation. Instead, rimers are predominantly imported into air parcels through sedimentation form higher altitudes. While ice nucleating particles (INPs) initiating heterogeneous freezing of cloud droplets at temperatures warmer than −10 °C have no discernible impact of the occurrence of secondary ice formation, in a scenario with rain freezing secondary ice production is initiated slightly earlier in the cloud evolution and at slightly different places, although with no major impact on the abundance or spatial distribution of secondary ice in the cloud as a whole. These results suggest that for interpreting and analysing observational data and model experiments regarding cloud glaciation and ice formation it is vital to consider the complex vertical coupling of cloud microphysical processes in deep convective clouds via three-dimensional transport and sedimentation.</jats:p>
Autoren
  • Annette K Miltenberger
  • Tim Lüttmer
  • Christoph Siewert
DOI
10.3390/atmos11050542
eISSN
2073-4433
Ausgabe der Veröffentlichung
5
Zeitschrift
Atmosphere
Sprache
en
Online publication date
2020
Paginierung
542 - 542
Status
Published online
Herausgeber
MDPI AG
Herausgeber URL
http://dx.doi.org/10.3390/atmos11050542
Datum der Datenerfassung
2021
Titel
Secondary Ice Formation in Idealised Deep Convection—Source of Primary Ice and Impact on Glaciation
Ausgabe der Zeitschrift
11

Datenquelle: Crossref

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