[gradsusr] Facing a problem with Time derivative

[lpasmanoranjan]

Dear Users,
I am having a problem while computing the time derivative of column
integrated moisture, which is:
(1/g) x ∂/∂t ∫*qdp*

I can compute the column integrated moisture as vint(1000,q,100). I can't
think the next.

I appreciate for any kind of help or suggestion in this regard.
-- 
Kind Regards,
Mano
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