Atmospheric dispersion

["Glenn marshall" <gmarshall@duratekinc.com>]

Does anyone out there do a lot of atmospheric dispersion modeling in

your spare time?  For an instantaneous point source release, where can I

find (or how can I determine) the instantaneous dispersion parameter in

the X direction (sigma-sub-xI)?



Using the Rad Health Handbook 3rd edition, Table 11.3.1.2 provides the

equations.  Table 11.3.4 provides values and approximations for

instantaneous dispersion parameters in the Y and Z directions, but not

for the X direction.  



Can anyone offer me any insight?



Thanks,



Glenn Marshall

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