WMOD00300

• Title: Characterization of Silver Iodide-Sodium Iodide Ice Nuclei Using Chemical Kinetic Methodology
• Date: 5/1/1985
• State: CO
• Weather Modification - Doc Type: Report

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35

should serve to form an embryo or droplet. Also, only one embryo or

droplet should form an ioe orystal. The ooourrence of ioe

multiplication, where one ice nucleus may produoe more than one ice

orystal, is not considered beoause laboratory oloud chamber conditions

in this stUdy are not conducive to such processes. Equations 3.2.3 and

3.2.4 can now be written as,

dC
::Ii _ -k'C
dt 1 N

dC
~ - kiCR -k2CAE

<3.2.6)

de
~ - k2CAE -k3C1E

~
dt - k3CIE

and

de
::Ii _ -k'C
dt 4 H

dCDSD
dt - k.CN -k5CDSD

<3.2.7)

de
~ III k5CDSD -k,CFD

dele
III k'C~--
dt 6 FD
In the experiments that follow, a final step, common to both

meohanisms of eq. 3.2.1 and 3.2.2, must be included. Ice nucleation is

monitored in this research when ice crystals have fallen to the bottom
of the 1 m3 ohamber. The process of fallout of the ioe crystals after

growth is a kinetio process that must be included in the net process.

This step can be expressed as