[gradsusr] How to calculate integrated water Vapor transport

[kalyan chakravarthy]

Hello Everyone,

I need some help to calculate Integrated Water vapor transport (IVT) from
surface to 300hPa.  I am using ERA-Interim data (uwind (u), vwind(v),
specific humidity(q)). I have used the scripts that are published in the
grads user forum, but the results seems wrong (ex. the values are from
40000 kg/ms).

The formula I am using to calculate the IVT is

IVT=Sqrt((integral(q*u)*dp)^2+((integral(q*v)*dp)^2)

Integration is from Surface to 300 hPa.


Thanks

Kalyan


-- 
*Kalyan Chakravarthy Yesoda*

Graduate Student, PhD
University of Nevada, Reno
Mobile no: 775-420-9434
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