Vaughan Phillips
Universitetslektor
Secondary ice production during the break-up of freezing water drops on impact with ice particles
Författare
Summary, in English
We provide the first dedicated laboratory study of collisions of supercooled water drops with ice particles as a secondary ice production mechanism. We experimentally investigated collisions of supercooled water drops (∼5 mm in diameter) with ice particles of a similar size (∼6 mm in diameter) placed on a glass slide at temperatures >-12 °C. Our results showed that secondary drops were generated during both the spreading and retraction phase of the supercooled water drop impact. The secondary drops generated during the spreading phase were emitted too fast to quantify. However, quantification of the secondary drops generated during the retraction phase with diameters >0.1 mm showed that 5-10 secondary drops formed per collision, with approximately 30 % of the secondary drops freezing over a temperature range between-4 and-12 ° C. Our results suggest that this secondary ice production mechanism may be significant for ice formation in atmospheric clouds containing large supercooled drops and ice particles.
Avdelning/ar
- Institutionen för naturgeografi och ekosystemvetenskap
- MERGE: ModElling the Regional and Global Earth system
Publiceringsår
2021-12-21
Språk
Engelska
Sidor
18519-18530
Publikation/Tidskrift/Serie
Atmospheric Chemistry and Physics
Volym
21
Issue
24
Dokumenttyp
Artikel i tidskrift
Förlag
Copernicus GmbH
Ämne
- Meteorology and Atmospheric Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1680-7316