[gradsusr] calculating vertically integrated moisture convergence

[Chuan-Chi Tu]

Hi

Can anyone help on calculating vertically integrated moisture convergence?

I use following script but the value looks too high

q: specific humidity kg/kg
PSFC:hPa

set lev 1000 300
define qu=q*u
define qv=q*v
define conv=-hdivg(qu,qv)

set lev 1000
d vint(PSFC,conv,300)*60*60
*(mm/hr)

Can anyone help on correcting it? Thank you for your help.
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