Articles | Volume 21, issue 24
https://doi.org/10.5194/acp-21-18519-2021
https://doi.org/10.5194/acp-21-18519-2021
Research article
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21 Dec 2021
Research article | Highlight paper |  | 21 Dec 2021

Secondary ice production during the break-up of freezing water drops on impact with ice particles

Rachel L. James, Vaughan T. J. Phillips, and Paul J. Connolly

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Cited articles

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Blyth, A. M. and Latham, J.: Development of ice and precipitation in new mexican summertime cumulus, Q. J. Roy. Meteor. Soc., 119, 91–120, https://doi.org/10.1002/qj.49711950905, 1993. a
Blyth, A. M. and Latham, J.: A multi-thermal model of cumulus glaciation via the Hallett–Mossop process, Q. J. Roy. Meteor. Soc., 123, 1185–1198, https://doi.org/10.1002/qj.49712354104, 1997. a
Changnon, S. A.: Characteristics of Ice Storms in the United States, J. Appl. Meteorol., 42, 630–639, https://doi.org/10.1175/1520-0450(2003)042<0630:COISIT>2.0.CO;2, 2003. a
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Secondary ice production (SIP) plays an important role in ice formation within mixed-phase clouds. We present a laboratory investigation of a potentially new SIP mechanism involving the collisions of supercooled water drops with ice particles. At impact, the supercooled water drop fragments form smaller secondary drops. Approximately 30 % of the secondary drops formed during the retraction phase of the supercooled water drop impact freeze over a temperature range of −4 °C to −12 °C.
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