includes graupel
http://www.atmos.washington.edu/mm5rt/info.html
The model utilizes 38 vertical full-sigma levels see below, and is run in
non-hydrostatic mode in order to limit pressure gradient force errors
over the complex terrain. An upper-radiative boundary condition is used
to allow gravity waves to radiate through the model top without being
reflected. The following table describes the phyics options we are
currently using:
Phyics Options:
Physics Comments CCM2 Radiation We changed the effective ice radius as used in radcsw.F from the
default 14.6 microns to 35 microns. We are using ICLOUD=1, using
resolved clouds.Reisner 2 Moist Physics Includes graupel.
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Heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except for the size convention that hail must have a diameter greater than 5 mm.
Sometimes distinguished by shape into conical, hexagonal, and lump (irregular) graupel.
http://amsglossary.allenpress.com/glossary/search?id=graupel1
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Snow pellets
(Also called soft hail, graupel, tapioca snow.)
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http://www.bartleby.com/61/wavs/85/G0238500.wav
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gropoppelpel