Premium
The production of secondary ice particles during riming
Author(s) -
Mossop S. C.,
Brownscombe J. L.,
Collins G. J.
Publication year - 1974
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49710042514
Subject(s) - hard rime , supercooling , ice nucleus , clear ice , water ice , accretion (finance) , atmospheric sciences , ice formation , environmental science , meteorology , geology , arctic ice pack , antarctic sea ice , astrobiology , physics , sea ice , astrophysics , thermodynamics , nucleation
Two series of experiments were undertaken to investigate whether secondary ice particles are thrown off during the accretion of supercooled water drops upon an ice surface. Riming took place in cloud at a temperature of about −9°C, and the accreted droplets were of various diameters up to 100 μm. Drops were accreted upon targets moving at velocities from 0·15 to 2·1 m s −1 . The number of secondary ice particles produced per unit mass of rime appears to be far too low to account for the high concentrations of ice particles observed in some natural clouds. Footnote added in proof. Subsequent work by J. Hallett and S. C. Mossop ( Nature , 1974, 249 , pp. 26‐27) has shown that high concentration of secondary ice particles can be produced by riming under certain special conditions.