[gradsusr] converting omega to vertical velocity

[Alireza Azargoun]

Dear GrADS users
Hi

I'm recently working on a project about the vertical speed of air in
different elevations. I'm using CFSR data in grb2 format. these data sets
have omega (Pa/s) instead . I tried to convert them to vertical velocity
(m/s) using this equation:
omega=  - rho * g * w  ( or omega=- (P/RT) *g * w )
but the results in (m/s ) are in the order of 10^-3. I know it's not a
Grads problem. but I'm an aerospace student and I need to find out if
anything is wrong with this equation or the results or not. ( I'm not
really familiar with meteorology!)

for example:
if  omega= 0.10595
& g=9.807
& R=287
& P= 100000 Pa
& T=294.27
resulted value is W=0.00912 (m/s)


Thanks in advance,
Alireza
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